Lees, G J; Rowbotham, G; Floyd, Peter A (1992): (Table 1) Comparison of petrographic features in Cretaceous and Miocene volcaniclastites from ODP Leg 129 sites [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.771423, In supplement to: Lees, GJ et al. (1992): Petrography and geochemistry of graded volcaniclastic sediments and their Ccasts, Leg 129. In: Larson, RL; Lancelot, Y; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 129, 137-152, https://doi.org/10.2973/odp.proc.sr.129.114.1992
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Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 17.554033 * Median Longitude: 153.964233 * South-bound Latitude: 12.096300 * West-bound Longitude: 152.322900 * North-bound Latitude: 21.923000 * East-bound Longitude: 156.359500
Date/Time Start: 1989-11-26T02:45:00 * Date/Time End: 1990-01-04T17:20:00
Minimum DEPTH, sediment/rock: 15.35 m * Maximum DEPTH, sediment/rock: 500.33 m
Event(s):
129-800A * Latitude: 21.923000 * Longitude: 152.322900 * Date/Time Start: 1989-11-26T02:45:00 * Date/Time End: 1989-12-05T20:27:00 * Elevation: -5697.0 m * Penetration: 544.4 m * Recovery: 150.73 m * Location: North Pacific Ocean * Campaign: Leg129 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 61 core; 544.4 m cored; 0 m drilled; 27.7 % recovery
129-801A * Latitude: 18.642800 * Longitude: 156.359500 * Date/Time Start: 1989-12-06T17:15:00 * Date/Time End: 1989-12-09T17:00:00 * Elevation: -5685.0 m * Penetration: 194 m * Recovery: 31.49 m * Location: North Pacific Ocean * Campaign: Leg129 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 20 cores; 186 m cored; 0 m drilled; 16.9 % recovery
129-802A * Latitude: 12.096300 * Longitude: 153.210300 * Date/Time Start: 1989-12-25T10:15:00 * Date/Time End: 1990-01-04T17:20:00 * Elevation: -5980.0 m * Penetration: 559.8 m * Recovery: 165.01 m * Location: North Pacific Ocean * Campaign: Leg129 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 62 cores; 559.8 m cored; 0 m drilled; 29.5 % recovery
Parameter(s):
# | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
---|---|---|---|---|---|---|
1 | Event label | Event | ||||
2 | Sample code/label | Sample label | Lees, G J | DSDP/ODP/IODP sample designation | ||
3 | DEPTH, sediment/rock | Depth sed | m | Geocode – mbsf | ||
4 | Epoch | Epoch | Lees, G J | |||
5 | Rock type | Rock | Lees, G J | |||
6 | Matrix description | Matrix descr | Lees, G J | |||
7 | Grain size description | Grain size descr | Lees, G J | matrix | ||
8 | Clasts | Clasts | Lees, G J | large | ||
9 | Vitric fragments | Vitric | Lees, G J | |||
10 | Vitric fragments | Vitric | Lees, G J | continued | ||
11 | Alteration | Alteration | Lees, G J | vitric | ||
12 | Lithic grains | Lithic | Lees, G J | |||
13 | Clasts | Clasts | Lees, G J | crystal | ||
14 | Biogenic | Biogenic | Lees, G J | |||
15 | Clasts | Clasts | Lees, G J | other |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
710 data points
Data
1 Event | 2 Sample label | 3 Depth sed [m] (mbsf) | 4 Epoch | 5 Rock | 6 Matrix descr | 7 Grain size descr (matrix) | 8 Clasts (large) | 9 Vitric | 10 Vitric (continued) | 11 Alteration (vitric) | 12 Lithic | 13 Clasts (crystal) | 14 Biogenic | 15 Clasts (other) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
129-800A | 129-800A-26R-1,85-90 | 229.45 | Cretaceous | fine-grained sst | clay mineral | some | Degradation to clay mineral mosaic renders identification of shards very difficult | Usually highly to brown smectite groundmass | Mostly Cpx (Titanauglte), some plag., occas. Ore usually fresh | Microfossils, mostly radiolarians. Usully present in small quantity | ||||
129-800A | 129-800A-26R-2,48-53 | 230.58 | Cretaceous | microfossil bearing ooze | clay mineral | some | Degradation to clay mineral mosaic renders identification of shards very difficult | Usually highly to brown smectite groundmass | Mostly Cpx (Titanauglte), some plag., occas. Ore usually fresh | Microfossils, mostly radiolarians. Usully present in small quantity | ||||
129-800A | 129-800A-26R-2,67-73 | 230.77 | Cretaceous | microfossil bearing ooze | clay mineral | some | Degradation to clay mineral mosaic renders identification of shards very difficult | Usually highly to brown smectite groundmass | Mostly Cpx (Titanauglte), some plag., occas. Ore usually fresh | Microfossils, mostly radiolarians. Usully present in small quantity | ||||
129-800A | 129-800A-26R-3,65-68 | 232.45 | Cretaceous | sst | clay mineral | some | Degradation to clay mineral mosaic renders identification of shards very difficult | Usually highly to brown smectite groundmass | Mostly Cpx (Titanauglte), some plag., occas. Ore usually fresh | Microfossils, mostly radiolarians. Usully present in small quantity | ||||
129-800A | 129-800A-27R-1,36-39 | 238.36 | Cretaceous | siliceous radiolarian micritic Limestones with Light dustings of volcani clastic material in Lenses | SiO2 replacing carbonate | some | Abundant clay | If present completely altered to brown smectite | Basalt clasts below 0.1 mm dia. Uncommon confined to very thin lenses 0,5 - 2 mm long | Uncommon ting crystal fragments below 0.1 mm, confined to very thin lensess 0.5 - 2 mm long | ||||
129-800A | 129-800A-27R-1,83-87 | 238.83 | Cretaceous | siliceous radiolarian micritic Limestones with Light dustings of volcani clastic material in Lenses | SiO2 replacing carbonate | Average grain-size | some | Abundant clay | If present completely altered to brown smectite | Basalt clasts below 0.1 mm dia. Uncommon confined to very thin lenses 0,5 - 2 mm long | Uncommon ting crystal fragments below 0.1 mm, confined to very thin lensess 0.5 - 2 mm long | |||
129-800A | 129-800A-27R-2,4-7 | 239.54 | Cretaceous | siliceous radiolarian micritic Limestones with Light dustings of volcani clastic material in Lenses | SiO2 replacing carbonate | Average grain-size | some | Abundant clay | If present completely altered to brown smectite | Basalt clasts below 0.1 mm dia. Uncommon confined to very thin lenses 0,5 - 2 mm long | Uncommon ting crystal fragments below 0.1 mm, confined to very thin lensess 0.5 - 2 mm long | |||
129-800A | 129-800A-28R-1,1-5 | 247.21 | Cretaceous | siliceous radiolarian micritic Limestones with Light dustings of volcani clastic material in Lenses | clay mineral | 0.5 mm or below | occasional | material, possibly degraded f/g vitric shards | Usually highly altered to brown groundmass | Both fresh and altered clasts occur. Clasts occur where marked | Mostly Cpx (Titanaugite). Some plag., occas. Ore. Usully fresh | Abundant colds and shell fragments pellets | ||
129-800A | 129-800A-28R-1,78-82 | 247.98 | Cretaceous | siliceous radiolarian micritic Limestones with Light dustings of volcani clastic material in Lenses | clay mineral | 0.5 mm or below | occasional | material, possibly degraded f/g vitric shards | Usually highly altered to brown groundmass | Both fresh and altered clasts occur. Clasts occur where marked | Mostly Cpx (Titanaugite). Some plag., occas. Ore. Usully fresh | Abundant colds and shell fragments pellets | ||
129-800A | 129-800A-28R-2,143-146 | 250.13 | Cretaceous | fine-granined ssts often rich in calcareous material | clay mineral | 0.5 mm or below | occasional | material, possibly degraded f/g vitric shards | Usually highly altered to brown groundmass | Both fresh and altered clasts occur. Clasts occur where marked | Mostly Cpx (Titanaugite). Some plag., occas. Ore. Usully fresh | Abundant colds and shell fragments pellets | ||
129-800A | 129-800A-28R-3,66-70 | 250.86 | Cretaceous | fine-granined ssts often rich in calcareous material | carbonate | 0.5 mm or below | occasional | material, possibly degraded f/g vitric shards | Usually highly altered to brown groundmass | Both fresh and altered clasts occur. Clasts occur where marked | Mostly Cpx (Titanaugite). Some plag., occas. Ore. Usully fresh | Abundant colds and shell fragments pellets | ||
129-800A | 129-800A-28R-3,136-141 | 251.56 | Cretaceous | fine-granined ssts often rich in calcareous material | clay mineral | 0.5 mm or below | occasional | material, possibly degraded f/g vitric shards | Usually highly altered to brown groundmass | Both fresh and altered clasts occur. Clasts occur where marked | Mostly Cpx (Titanaugite). Some plag., occas. Ore. Usully fresh | Abundant colds and shell fragments pellets | ||
129-800A | 129-800A-28R-4,112-117 | 252.82 | Cretaceous | fine-granined ssts often rich in calcareous material | clay mineral | 0.5 mm or below | occasional | material, possibly degraded f/g vitric shards | Usually highly altered to brown groundmass | Both fresh and altered clasts occur. Clasts occur where marked | Mostly Cpx (Titanaugite). Some plag., occas. Ore. Usully fresh | Abundant colds and shell fragments pellets | ||
129-800A | 129-800A-28R-5,95-100 | 254.15 | Cretaceous | fine-granined ssts often rich in calcareous material | clay mineral | 0.5 mm or below | occasional | material, possibly degraded f/g vitric shards | Usually highly altered to brown groundmass | Both fresh and altered clasts occur. Clasts occur where marked | Mostly Cpx (Titanaugite). Some plag., occas. Ore. Usully fresh | Abundant colds and shell fragments pellets | ||
129-800A | 129-800A-29R-3,34-37 | 259.84 | Cretaceous | siliceous radiolarien micritic limestone | silica/carbonate | Both fresh and altered clasts occur. Clasts occur where marked | Many crystal fragments altered to clay minerals and carbonate. Cpx (titanaugite) is the fresh crystal phase. Usually plag. Is found sporadically Amphibole occurs particularly towards the top | Rad.s. forams. | ooids, c/g crystalline calcite. | |||||
129-800A | 129-800A-30R-CC,4-8 | 268.92 | Cretaceous | Mixed group of volcaniclastic sandstones and limestones, usually c/g., showing a transition from vitric-dominated to lithic-dominant compositions towards the top | Hatrix material essentially clay-mineral except where indicated, where indicated where carbonate or carbonate-clay-mineral aggregate | Average grain-size 0.25 to 1 mm dia. | Indurated fine.grained claystone or siltstone, often with a recognizable volcaniclastic component, to crystals or lithic clasis. Normaily the same grain-size as matrix reach 15 mm or more Usually faintly laminated | Always present but abundance varies | Mostly highly altered | Always present, sometimes abundant occasionally the dominant component. Fresh basalt material almost totally absent particularly in the lower horizons. | Many crystal fragments altered to clay minerals and carbonate. Cpx (titanaugite) is the fresh crystal phase. Usually plag. Is found sporadically Amphibole occurs particularly towards the top | Usually some biogenic material. But not common. Bryozoans | ooids, c/g crystalline calcite. | |
129-800A | 129-800A-31R-2,45-50 | 273.95 | Cretaceous | Mixed group of volcaniclastic sandstones and limestones, usually c/g., showing a transition from vitric-dominated to lithic-dominant compositions towards the top | Hatrix material essentially clay-mineral except where indicated, where indicated where carbonate or carbonate-clay-mineral aggregate | Average grain-size 0.25 to 1 mm dia. | Indurated fine.grained claystone or siltstone, often with a recognizable volcaniclastic component, to crystals or lithic clasis. Normaily the same grain-size as matrix reach 15 mm or more Usually faintly laminated | Always present but abundance varies | Mostly highly altered | Always present, sometimes abundant occasionally the dominant component. Fresh basalt material almost totally absent particularly in the lower horizons. | Many crystal fragments altered to clay minerals and carbonate. Cpx (titanaugite) is the fresh crystal phase. Usually plag. Is found sporadically Amphibole occurs particularly towards the top | Usually some biogenic material. But not common. Bryozoans | ooids, c/g crystalline calcite. | |
129-800A | 129-800A-31R-2,125-130 | 274.75 | Cretaceous | Mixed group of volcaniclastic sandstones and limestones, usually c/g., showing a transition from vitric-dominated to lithic-dominant compositions towards the top | Hatrix material essentially clay-mineral except where indicated, where indicated where carbonate or carbonate-clay-mineral aggregate | Average grain-size 0.25 to 1 mm dia. | Indurated fine.grained claystone or siltstone, often with a recognizable volcaniclastic component, to crystals or lithic clasis. Normaily the same grain-size as matrix reach 15 mm or more Usually faintly laminated | Always present but abundance varies | Mostly highly altered | Always present, sometimes abundant occasionally the dominant component. Fresh basalt material almost totally absent particularly in the lower horizons. | Many crystal fragments altered to clay minerals and carbonate. Cpx (titanaugite) is the fresh crystal phase. Usually plag. Is found sporadically Amphibole occurs particularly towards the top | Usually some biogenic material. But not common. Bryozoans | Rounded to sub-rounded clasts and oolds sometimes abundant | |
129-800A | 129-800A-32R-1,94-99 | 279.04 | Cretaceous | Mixed group of volcaniclastic sandstones and limestones, usually c/g., showing a transition from vitric-dominated to lithic-dominant compositions towards the top | Hatrix material essentially clay-mineral except where indicated, where indicated where carbonate or carbonate-clay-mineral aggregate | Average grain-size 0.25 to 1 mm dia. | Indurated fine.grained claystone or siltstone, often with a recognizable volcaniclastic component, to crystals or lithic clasis. Normaily the same grain-size as matrix reach 15 mm or more Usually faintly laminated | Always present but abundance varies | Mostly highly altered | Always present, sometimes abundant occasionally the dominant component. Fresh basalt material almost totally absent particularly in the lower horizons. | Many crystal fragments altered to clay minerals and carbonate. Cpx (titanaugite) is the fresh crystal phase. Usually plag. Is found sporadically Amphibole occurs particularly towards the top | Usually some biogenic material. But not common. Bryozoans | Rounded to sub-rounded clasts and oolds sometimes abundant | |
129-800A | 129-800A-32R-2,76-80 | 280.36 | Cretaceous | Mixed group of volcaniclastic sandstones and limestones, usually c/g., showing a transition from vitric-dominated to lithic-dominant compositions towards the top | Hatrix material essentially clay-mineral except where indicated, where indicated where carbonate or carbonate-clay-mineral aggregate | Average grain-size 0.25 to 1 mm dia. | Indurated fine.grained claystone or siltstone, often with a recognizable volcaniclastic component, to crystals or lithic clasis. Normaily the same grain-size as matrix reach 15 mm or more Usually faintly laminated | Always present but abundance varies | Mostly highly altered | Always present, sometimes abundant occasionally the dominant component. Fresh basalt material almost totally absent particularly in the lower horizons. | Many crystal fragments altered to clay minerals and carbonate. Cpx (titanaugite) is the fresh crystal phase. Usually plag. Is found sporadically Amphibole occurs particularly towards the top | Usually some biogenic material. But not common. Bryozoans | Rounded to sub-rounded clasts and oolds sometimes abundant | |
129-800A | 129-800A-33R-2,117-122 | 290.17 | Cretaceous | Mixed group of volcaniclastic sandstones and limestones, usually c/g., showing a transition from vitric-dominated to lithic-dominant compositions towards the top | Hatrix material essentially clay-mineral except where indicated, where indicated where carbonate or carbonate-clay-mineral aggregate | Average grain-size 0.25 to 1 mm dia. | Indurated fine.grained claystone or siltstone, often with a recognizable volcaniclastic component, to crystals or lithic clasis. Normaily the same grain-size as matrix reach 15 mm or more Usually faintly laminated | Always present but abundance varies | Mostly highly altered | Always present, sometimes abundant occasionally the dominant component. Fresh basalt material almost totally absent particularly in the lower horizons. | Many crystal fragments altered to clay minerals and carbonate. Cpx (titanaugite) is the fresh crystal phase. Usually plag. Is found sporadically Amphibole occurs particularly towards the top | Usually some biogenic material. But not common. Bryozoans | Rounded to sub-rounded clasts and oolds sometimes abundant | |
129-800A | 129-800A-33R-4,146-150 | 293.46 | Cretaceous | Mixed group of volcaniclastic sandstones and limestones, usually c/g., showing a transition from vitric-dominated to lithic-dominant compositions towards the top | Hatrix material essentially clay-mineral except where indicated, where indicated where carbonate or carbonate-clay-mineral aggregate | Average grain-size 0.25 to 1 mm dia. | Indurated fine.grained claystone or siltstone, often with a recognizable volcaniclastic component, to crystals or lithic clasis. Normaily the same grain-size as matrix reach 15 mm or more Usually faintly laminated | Always present but abundance varies | Mostly highly altered | Always present, sometimes abundant occasionally the dominant component. Fresh basalt material almost totally absent particularly in the lower horizons. | Many crystal fragments altered to clay minerals and carbonate. Cpx (titanaugite) is the fresh crystal phase. Usually plag. Is found sporadically Amphibole occurs particularly towards the top | Usually some biogenic material. But not common. Bryozoans | Rounded to sub-rounded clasts and oolds sometimes abundant | |
129-800A | 129-800A-33R-6,37-43 | 295.37 | Cretaceous | Mixed group of volcaniclastic sandstones and limestones, usually c/g., showing a transition from vitric-dominated to lithic-dominant compositions towards the top | Hatrix material essentially clay-mineral except where indicated, where indicated where carbonate or carbonate-clay-mineral aggregate | Average grain-size 0.25 to 1 mm dia. | Indurated fine.grained claystone or siltstone, often with a recognizable volcaniclastic component, to crystals or lithic clasis. Normaily the same grain-size as matrix reach 15 mm or more Usually faintly laminated | Always present but abundance varies | Mostly highly altered | Always present, sometimes abundant occasionally the dominant component. Fresh basalt material almost totally absent particularly in the lower horizons. | Many crystal fragments altered to clay minerals and carbonate. Cpx (titanaugite) is the fresh crystal phase. Usually plag. Is found sporadically Amphibole occurs particularly towards the top | Usually some biogenic material. But not common. Bryozoans | Rounded to sub-rounded clasts and oolds sometimes abundant | |
129-800A | 129-800A-34R-2,0-9 | 298.50 | Cretaceous | Mixed group of volcaniclastic sandstones and limestones, usually c/g., showing a transition from vitric-dominated to lithic-dominant compositions towards the top | Hatrix material essentially clay-mineral except where indicated, where indicated where carbonate or carbonate-clay-mineral aggregate | Average grain-size 0.25 to 1 mm dia. | Indurated fine.grained claystone or siltstone, often with a recognizable volcaniclastic component, to crystals or lithic clasis. Normaily the same grain-size as matrix reach 15 mm or more Usually faintly laminated | Always present but abundance varies | Mostly highly altered | Always present, sometimes abundant occasionally the dominant component. Fresh basalt material almost totally absent particularly in the lower horizons. | Many crystal fragments altered to clay minerals and carbonate. Cpx (titanaugite) is the fresh crystal phase. Usually plag. Is found sporadically Amphibole occurs particularly towards the top | Usually some biogenic material. But not common. Bryozoans | Rounded to sub-rounded clasts and oolds sometimes abundant | |
129-800A | 129-800A-34R-3,46-51 | 300.46 | Cretaceous | Mixed group of volcaniclastic sandstones and limestones, usually c/g., showing a transition from vitric-dominated to lithic-dominant compositions towards the top | Hatrix material essentially clay-mineral except where indicated, where indicated where carbonate or carbonate-clay-mineral aggregate | Average grain-size 0.25 to 1 mm dia. | Indurated fine.grained claystone or siltstone, often with a recognizable volcaniclastic component, to crystals or lithic clasis. Normaily the same grain-size as matrix reach 15 mm or more Usually faintly laminated | Always present but abundance varies | Mostly highly altered | Always present, sometimes abundant occasionally the dominant component. Fresh basalt material almost totally absent particularly in the lower horizons. | Many crystal fragments altered to clay minerals and carbonate. Cpx (titanaugite) is the fresh crystal phase. Usually plag. Is found sporadically Amphibole occurs particularly towards the top | Usually some biogenic material. But not common. Bryozoans | Rounded to sub-rounded clasts and oolds sometimes abundant | |
129-800A | 129-800A-35R-3,82-87 | 308.72 | Cretaceous | Mixed group of volcaniclastic sandstones and limestones, usually c/g., showing a transition from vitric-dominated to lithic-dominant compositions towards the top | Hatrix material essentially clay-mineral except where indicated, where indicated where carbonate or carbonate-clay-mineral aggregate | Average grain-size 0.25 to 1 mm dia. | Indurated fine.grained claystone or siltstone, often with a recognizable volcaniclastic component, to crystals or lithic clasis. Normaily the same grain-size as matrix reach 15 mm or more Usually faintly laminated | Always present but abundance varies | Mostly highly altered | Always present, sometimes abundant occasionally the dominant component. Fresh basalt material almost totally absent particularly in the lower horizons. | Many crystal fragments altered to clay minerals and carbonate. Cpx (titanaugite) is the fresh crystal phase. Usually plag. Is found sporadically Amphibole occurs particularly towards the top | Usually some biogenic material. But not common. Bryozoans | Rounded to sub-rounded clasts and oolds sometimes abundant | |
129-800A | 129-800A-36R-1,79-83 | 316.69 | Cretaceous | Mixed group of volcaniclastic sandstones and limestones, usually c/g., showing a transition from vitric-dominated to lithic-dominant compositions towards the top | Hatrix material essentially clay-mineral except where indicated, where indicated where carbonate or carbonate-clay-mineral aggregate | Average grain-size 0.25 to 1 mm dia. | Indurated fine.grained claystone or siltstone, often with a recognizable volcaniclastic component, to crystals or lithic clasis. Normaily the same grain-size as matrix reach 15 mm or more Usually faintly laminated | Always present but abundance varies | Mostly highly altered | Always present, sometimes abundant occasionally the dominant component. Fresh basalt material almost totally absent particularly in the lower horizons. | Many crystal fragments altered to clay minerals and carbonate. Cpx (titanaugite) is the fresh crystal phase. Usually plag. Is found sporadically Amphibole occurs particularly towards the top | Usually some biogenic material. But not common. Bryozoans | Rounded to sub-rounded clasts and oolds sometimes abundant | |
129-800A | 129-800A-37R-2,137-141 | 327.97 | Cretaceous | Mixed group of volcaniclastic sandstones and limestones, usually c/g., showing a transition from vitric-dominated to lithic-dominant compositions towards the top | Hatrix material essentially clay-mineral except where indicated, where indicated where carbonate or carbonate-clay-mineral aggregate | Average grain-size 0.25 to 1 mm dia. | Indurated fine.grained claystone or siltstone, often with a recognizable volcaniclastic component, to crystals or lithic clasis. Normaily the same grain-size as matrix reach 15 mm or more Usually faintly laminated | Always present but abundance varies | Mostly highly altered | Always present, sometimes abundant occasionally the dominant component. Fresh basalt material almost totally absent particularly in the lower horizons. | Many crystal fragments altered to clay minerals and carbonate. Cpx (titanaugite) is the fresh crystal phase. Usually plag. Is found sporadically Amphibole occurs particularly towards the top | Usually some biogenic material. But not common. Bryozoans | c/g calicte fragments | |
129-800A | 129-800A-37R-CC,8-12 | 328.09 | Cretaceous | Mixed group of volcaniclastic sandstones and limestones, usually c/g., showing a transition from vitric-dominated to lithic-dominant compositions towards the top | Hatrix material essentially clay-mineral except where indicated, where indicated where carbonate or carbonate-clay-mineral aggregate | Average grain-size 0.25 to 1 mm dia. | Indurated fine.grained claystone or siltstone, often with a recognizable volcaniclastic component, to crystals or lithic clasis. Normaily the same grain-size as matrix reach 15 mm or more Usually faintly laminated | Always present but abundance varies | Mostly highly altered | Always present, sometimes abundant occasionally the dominant component. Fresh basalt material almost totally absent particularly in the lower horizons. | Many crystal fragments altered to clay minerals and carbonate. Cpx (titanaugite) is the fresh crystal phase. Usually plag. Is found sporadically Amphibole occurs particularly towards the top | Usually some biogenic material. But not common. Bryozoans | c/g calcite | |
129-800A | 129-800A-39R-1,78-80 | 344.58 | Cretaceous | Mixed group of volcaniclastic sandstones and limestones, usually c/g., showing a transition from vitric-dominated to lithic-dominant compositions towards the top | Hatrix material essentially clay-mineral except where indicated, where indicated where carbonate or carbonate-clay-mineral aggregate | Average grain-size 0.25 to 1 mm dia. | Indurated fine.grained claystone or siltstone, often with a recognizable volcaniclastic component, to crystals or lithic clasis. Normaily the same grain-size as matrix reach 15 mm or more Usually faintly laminated | Vitric material very abundant. Shards often quite vesicular. Large highly vesicular scoriae do occur | Mostly highly altered | Always present, sometimes abundant occasionally the dominant component. Fresh basalt material almost totally absent particularly in the lower horizons. | Cpx with more rarely. Plag.. Both usually fresh | Usually some biogenic material. But not common. Bryozoans | c/g calcite | |
129-800A | 129-800A-40R-1,28-30 | 353.38 | Cretaceous | Coarse-grained volcaniclastic sandstones very rich in vitric material. Some of it fresh glass. Occasional horizons rich in subrounded tuffaceous claystone or siltstone clasts form breccias | Hatrix material essentially clay-mineral except where indicated, where indicated where carbonate or carbonate-clay-mineral aggregate | Average grainsize between 0.5 and 1.5 mm Maximum grain-size 3 mm | Indurated fine.grained claystone or siltstone, often with a recognizable volcaniclastic component, to crystals or lithic clasis. Normaily the same grain-size as matrix reach 15 mm or more Usually faintly laminated | Vitric material very abundant. Shards often quite vesicular. Large highly vesicular scoriae do occur | Mostly highly altered | Always present, sometimes abundant occasionally the dominant component. Fresh basalt material almost totally absent particularly in the lower horizons. | Cpx with more rarely. Plag.. Both usually fresh | Usually some biogenic material. But not common. Bryozoans | c/g calcite | |
129-800A | 129-800A-41R-1,60-66 | 363.10 | Cretaceous | Coarse-grained volcaniclastic sandstones very rich in vitric material. Some of it fresh glass. Occasional horizons rich in subrounded tuffaceous claystone or siltstone clasts form breccias | Hatrix material essentially clay-mineral except where indicated, where indicated where carbonate or carbonate-clay-mineral aggregate | Average grainsize between 0.5 and 1.5 mm Maximum grain-size 3 mm | Indurated fine.grained claystone or siltstone, often with a recognizable volcaniclastic component, to crystals or lithic clasis. Normaily the same grain-size as matrix reach 15 mm or more Usually faintly laminated | Vitric material very abundant. Shards often quite vesicular. Large highly vesicular scoriae do occur | Mostly highly altered | Always present, sometimes abundant occasionally the dominant component. Fresh basalt material almost totally absent particularly in the lower horizons. | Cpx with more rarely. Plag.. Both usually fresh | Usually some biogenic material. But not common. Bryozoans | c/g calcite | |
129-800A | 129-800A-44R-1,70-74 | 384.40 | Cretaceous | Coarse-grained volcaniclastic sandstones very rich in vitric material. Some of it fresh glass. Occasional horizons rich in subrounded tuffaceous claystone or siltstone clasts form breccias | Hatrix material essentially clay-mineral except where indicated, where indicated where carbonate or carbonate-clay-mineral aggregate | Average grainsize between 0.5 and 1.5 mm Maximum grain-size 3 mm | Indurated fine.grained claystone or siltstone, often with a recognizable volcaniclastic component, to crystals or lithic clasis. Normaily the same grain-size as matrix reach 15 mm or more Usually faintly laminated | Vitric material very abundant. Shards often quite vesicular. Large highly vesicular scoriae do occur | Mostly highly altered | Always present, sometimes abundant occasionally the dominant component. Fresh basalt material almost totally absent particularly in the lower horizons. | Cpx with more rarely. Plag.. Both usually fresh | Usually some biogenic material. But not common. Bryozoans | c/g calcite | |
129-800A | 129-800A-45R-1,53-57 | 393.63 | Cretaceous | Coarse-grained volcaniclastic sandstones very rich in vitric material. Some of it fresh glass. Occasional horizons rich in subrounded tuffaceous claystone or siltstone clasts form breccias | Hatrix material essentially clay-mineral except where indicated, where indicated where carbonate or carbonate-clay-mineral aggregate | Average grainsize between 0.5 and 1.5 mm Maximum grain-size 3 mm | Fine-grained laminated tuffaceous siltstone | Vitric material very abundant. Shards often quite vesicular. Large highly vesicular scoriae do occur | Mostly highly altered | Basaltic clasts. Abundance variable but often virtuelly absent | Cpx with more rarely. Plag.. Both usually fresh | Usually some biogenic material. But not common. Bryozoans | c/g calcite | |
129-800A | 129-800A-46R-3,5-11 | 405.55 | Cretaceous | Coarse-grained volcaniclastic sandstones very rich in vitric material. Some of it fresh glass. Occasional horizons rich in subrounded tuffaceous claystone or siltstone clasts form breccias | Hatrix material essentially clay-mineral except where indicated, where indicated where carbonate or carbonate-clay-mineral aggregate | Average grainsize between 0.5 and 1.5 mm Maximum grain-size 3 mm | Fine-grained laminated tuffaceous siltstone | Vitric material very abundant. Shards often quite vesicular. Large highly vesicular scoriae do occur | Mostly highly altered | Basaltic clasts. Abundance variable but often virtuelly absent | Cpx with more rarely. Plag.. Both usually fresh | Usually some biogenic material. But not common. Bryozoans | c/g calcite | |
129-800A | 129-800A-46R-3,27-31 | 405.77 | Cretaceous | Coarse-grained volcaniclastic sandstones very rich in vitric material. Some of it fresh glass. Occasional horizons rich in subrounded tuffaceous claystone or siltstone clasts form breccias | Hatrix material essentially clay-mineral except where indicated, where indicated where carbonate or carbonate-clay-mineral aggregate | Average grainsize between 0.5 and 1.5 mm Maximum grain-size 3 mm | Fine-grained laminated tuffaceous siltstone | Vitric material very abundant. Shards often quite vesicular. Large highly vesicular scoriae do occur | Mostly highly altered | Basaltic clasts. Abundance variable but often virtuelly absent | Cpx with more rarely. Plag.. Both usually fresh | Usually some biogenic material. But not common. Bryozoans | c/g calcite | |
129-800A | 129-800A-48R-2,31-34 | 423.21 | Cretaceous | Coarse-grained volcaniclastic sandstones very rich in vitric material. Some of it fresh glass. Occasional horizons rich in subrounded tuffaceous claystone or siltstone clasts form breccias | Hatrix material essentially clay-mineral except where indicated, where indicated where carbonate or carbonate-clay-mineral aggregate | Average grainsize between 0.5 and 1.5 mm Maximum grain-size 3 mm | Fine-grained laminated tuffaceous siltstone | Vitric material very abundant. Shards often quite vesicular. Large highly vesicular scoriae do occur | Mostly highly altered | Basaltic clasts. Abundance variable but often virtuelly absent | Cpx with more rarely. Plag.. Both usually fresh | Usually some biogenic material. But not common. Bryozoans | c/g calcite | |
129-800A | 129-800A-49R-3,123-127 | 435.13 | Cretaceous | Reworked hyaloclastites | Hatrix material essentially clay-mineral except where indicated, where indicated where carbonate or carbonate-clay-mineral aggregate | Average grainsize between 0.5 and 1.5 mm Maximum grain-size 3 mm | Fine-grained laminated tuffaceous siltstone | Vitric material very abundant. Shards often quite vesicular. Large highly vesicular scoriae do occur | Mostly highly altered | Basaltic clasts. Abundance variable but often virtuelly absent | Cpx with more rarely. Plag.. Both usually fresh | Usually some biogenic material. But not common. Bryozoans | c/g calcite | |
129-801A | 129-801A-16R-1,108-112 | 138.68 | Cretaceous | Coarse-grained mixed volcaniclastic sandstone | Highly calcereous | c. 1mm dia. | one or two | Vitric shards dominant | dominant | Minor quenched basalt occas. Vesic. Tachylite | Numerous microfossils | Clastic fragments | ||
129-801A | 129-801A-18R-1,25-30 | 157.25 | Cretaceous | Medium to coarse-grained volcaniclastic sandstones and redeposited hyalolastites | 0.1 to 0.5 mm but can reach 3mm | Occurence of fine-grained tuffaceous clastic up to 5 mm at marked horizons | Alteration makes identification defficult. Towards base, simple spalling and bubole sharos dominant, but upwards increase in compound irregular shaped shards, | highly vesicular occasional tubular scoriae and multi-chambered vesicles often contain large phenocrysts of Cpx. Oliv. Up to 3 mm dia. Very abundant to dominant | Highly altered to brown smectite | Very little carbonate material | ||||
129-801A | 129-801A-18R-1,138-142 | 158.38 | Cretaceous | Medium to coarse-grained volcaniclastic sandstones and redeposited hyalolastites | 0.1 to 0.5 mm but can reach 3mm | Occurence of fine-grained tuffaceous clastic up to 5 mm at marked horizons | Alteration makes identification defficult. Towards base, simple spalling and bubole sharos dominant, but upwards increase in compound irregular shaped shards, | highly vesicular occasional tubular scoriae and multi-chambered vesicles often contain large phenocrysts of Cpx. Oliv. Up to 3 mm dia. Very abundant to dominant | Highly altered to brown smectite | Very little carbonate material | ||||
129-801A | 129-801A-1R-2,26-31 | 187.76 | Cretaceous | Medium to coarse-grained volcaniclastic sandstones and redeposited hyalolastites | 0.1 to 0.5 mm but can reach 3mm | Occurence of fine-grained tuffaceous clastic up to 5 mm at marked horizons | Alteration makes identification defficult. Towards base, simple spalling and bubole sharos dominant, but upwards increase in compound irregular shaped shards, | highly vesicular occasional tubular scoriae and multi-chambered vesicles often contain large phenocrysts of Cpx. Oliv. Up to 3 mm dia. Very abundant to dominant | Simple shards usually pale palagonite altering to smectite. Spherulitic alteration to brown smectite in large shards | Very little carbonate material | ||||
129-801A | 129-801A-1R-3,145-15 | 190.45 | Cretaceous | Medium to coarse-grained volcaniclastic sandstones and redeposited hyalolastites | 0.1 to 0.5 mm but can reach 3mm | Occurence of fine-grained tuffaceous clastic up to 5 mm at marked horizons | Alteration makes identification defficult. Towards base, simple spalling and bubole sharos dominant, but upwards increase in compound irregular shaped shards, | highly vesicular occasional tubular scoriae and multi-chambered vesicles often contain large phenocrysts of Cpx. Oliv. Up to 3 mm dia. Very abundant to dominant | Simple shards usually pale palagonite altering to smectite. Spherulitic alteration to brown smectite in large shards | Very little carbonate material | ||||
129-801A | 129-801A-1R-4,72-77 | 191.22 | Cretaceous | Medium to coarse-grained volcaniclastic sandstones and redeposited hyalolastites | 0.1 to 0.5 mm but can reach 3mm | Occurence of fine-grained tuffaceous clastic up to 5 mm at marked horizons | Alteration makes identification defficult. Towards base, simple spalling and bubole sharos dominant, but upwards increase in compound irregular shaped shards, | highly vesicular occasional tubular scoriae and multi-chambered vesicles often contain large phenocrysts of Cpx. Oliv. Up to 3 mm dia. Very abundant to dominant | Simple shards usually pale palagonite altering to smectite. Spherulitic alteration to brown smectite in large shards | Very little carbonate material | ||||
129-801A | 129-801A-2R-1,96-104 | 196.46 | Cretaceous | Medium to coarse-grained volcaniclastic sandstones and redeposited hyalolastites | 0.1 to 0.5 mm but can reach 3mm | Occurence of fine-grained tuffaceous clastic up to 5 mm at marked horizons | Alteration makes identification defficult. Towards base, simple spalling and bubole sharos dominant, but upwards increase in compound irregular shaped shards, | highly vesicular occasional tubular scoriae and multi-chambered vesicles often contain large phenocrysts of Cpx. Oliv. Up to 3 mm dia. Very abundant to dominant | Simple shards usually pale palagonite altering to smectite. Spherulitic alteration to brown smectite in large shards | Very little carbonate material | ||||
129-801A | 129-801A-3R-1,16-21 | 205.06 | Cretaceous | Medium to coarse-grained volcaniclastic sandstones and redeposited hyalolastites | 0.1 to 0.5 mm but can reach 3mm | Occurence of fine-grained tuffaceous clastic up to 5 mm at marked horizons | Alteration makes identification defficult. Towards base, simple spalling and bubole sharos dominant, but upwards increase in compound irregular shaped shards, | highly vesicular occasional tubular scoriae and multi-chambered vesicles often contain large phenocrysts of Cpx. Oliv. Up to 3 mm dia. Very abundant to dominant | Simple shards usually pale palagonite altering to smectite. Spherulitic alteration to brown smectite in large shards | Very little carbonate material | ||||
129-801A | 129-801A-6R-4,90-95 | 238.70 | Cretaceous | Medium to coarse-grained volcaniclastic sandstones and redeposited hyalolastites | 0.1 to 0.5 mm but can reach 3mm | Occurence of fine-grained tuffaceous clastic up to 5 mm at marked horizons | Alteration makes identification defficult. Towards base, simple spalling and bubole sharos dominant, but upwards increase in compound irregular shaped shards, | highly vesicular occasional tubular scoriae and multi-chambered vesicles often contain large phenocrysts of Cpx. Oliv. Up to 3 mm dia. Very abundant to dominant | Highly altered | Very little carbonate material | ||||
129-801A | 129-801A-9R-2,144-150 | 255.64 | Cretaceous | Volcaniclastic silty claystone to fine-grained sandstone | 0.1 to 0.5 mm but can reach 3mm | Occurence of fine-grained tuffaceous clastic up to 5 mm at marked horizons | Alteration makes identification defficult. Towards base, simple spalling and bubole sharos dominant, but upwards increase in compound irregular shaped shards, | highly vesicular occasional tubular scoriae and multi-chambered vesicles often contain large phenocrysts of Cpx. Oliv. Up to 3 mm dia. Very abundant to dominant | Highly altered | None Identifiable | Minor Cpx | Abundant nannofossils | Very little carbonate material | |
129-801A | 129-801A-8R-5,29-34 | 258.99 | Cretaceous | Volcaniclastic silty claystone to fine-grained sandstone | 0.1 to 0.5 mm but can reach 3mm | Occurence of fine-grained tuffaceous clastic up to 5 mm at marked horizons | Alteration makes identification defficult. Towards base, simple spalling and bubole sharos dominant, but upwards increase in compound irregular shaped shards, | highly vesicular occasional tubular scoriae and multi-chambered vesicles often contain large phenocrysts of Cpx. Oliv. Up to 3 mm dia. Very abundant to dominant | Highly altered | None Identifiable | Minor Cpx | Abundant nannofossils | Very little carbonate material | |
129-801A | 129-801A-13R-1,94-99 | 301.94 | Cretaceous | Fine-grained smectite-rich sandstone | None identifiable | Minor basalt clasts | Minor Cpx | Abundant microfossils | ||||||
129-802A | 129-802A-40R-2,122-129 | 360.82 | Cretaceous | Fine-grained tuffaceous | 0.2 to 0.75 mm | F/g tuffaceous clasis to 2.5 mm long, often well-rounded, elongate Dark rims towards top | Mostly angular spalling shards but occasional highly vesicular scoriae Simple spalling shards where still identifiable but not common | Diminishes in intensity upwards. Towards top is pale palagonite altering to smectite. Completely altered to clay minerals | Occasional clasts of a wide variety of basaltic types. Highly angular mostly fresh Tachylite . Some hypo crystalline basalt rounded quenched bas alt. Highly altered | Cpx. Plag. Both fresh. Often plag. Exceeds cpx | Occasional nannofossils, radiolaria, forams. Carbonate spherolds. | Minor carbonate component of f/g micrite. c/g crystal mosaics. With occasional ooids | ||
129-802A | 129-802A-43R-2,52-56 | 384.12 | Cretaceous | Fine-grained well-sorted tuffaceous sandstone | 0.2 to 0.75 mm | F/g tuffaceous clasis to 2.5 mm long, often well-rounded, elongate Dark rims towards top | Mostly angular spalling shards but occasional highly vesicular scoriae Simple spalling shards where still identifiable but not common | Diminishes in intensity upwards. Towards top is pale palagonite altering to smectite. Completely altered to clay minerals | Occasional clasts of a wide variety of basaltic types. Highly angular mostly fresh Tachylite . Some hypo crystalline basalt rounded quenched bas alt. Highly altered | Cpx. Plag. Both fresh. Often plag. Exceeds cpx | Occasional nannofossils, radiolaria, forams. Carbonate spherolds. | Minor carbonate component of f/g micrite. c/g crystal mosaics. With occasional ooids | ||
129-802A | 129-802A-56R-3,23-29 | 500.33 | Cretaceous | Fine-grained well-sorted tuffaceous sandstone | F/g tuffaceous clasis to 2.5 mm long, often well-rounded, elongate Dark rims towards top | Mostly angular spalling shards but occasional highly vesicular scoriae Simple spalling shards where still identifiable but not common | Diminishes in intensity upwards. Towards top is pale palagonite altering to smectite. Completely altered to clay minerals | Occasional clasts of a wide variety of basaltic types. Highly angular mostly fresh Tachylite . Some hypo crystalline basalt rounded quenched bas alt. Highly altered | Some identifiable fragments of Cpx. Some altered to ?zeolite | Minor carbonate component of f/g micrite. c/g crystal mosaics. With occasional ooids | ||||
129-802A | 129-802A-3R-1,75-80 | 15.35 | Miocene | Lapilli-Tuff with numerous clasts of claystone/siltstone | Heavily carbonated groundmass, patchy towards base with clay mineral | Average grain-size 0.2 - 0.5 mm dia. With maximum above 1mm | Common occurrence of f/g tuffaceous claystone or siltstone clasts, subrounded to sub-angular. Often slightly elongated | Some identifiable fragments of Cpx. Some altered to ?zeolite | Minor carbonate component of f/g micrite. c/g crystal mosaics. With occasional ooids | |||||
129-802A | 129-802A-4R-1,111-115 | 25.41 | Miocene | Lapilli-Tuff with numerous clasts of claystone/siltstone | Heavily carbonated groundmass, patchy towards base with clay mineral | Average grain-size 0.2 - 0.5 mm dia. With maximum above 1mm | Common occurrence of f/g tuffaceous claystone or siltstone clasts, subrounded to sub-angular. Often slightly elongated | Minor carbonate component of f/g micrite. c/g crystal mosaics. With occasional ooids | ||||||
129-802A | 129-802A-4R-2,14-19 | 25.94 | Miocene | Vitric shard dominated volcaniclastic sandstone approaching hyaloclastites in composition and appearance | Heavily carbonated groundmass, patchy towards base with clay mineral | Average grain-size 0.2 - 0.5 mm dia. With maximum above 1mm | Common occurrence of f/g tuffaceous claystone or siltstone clasts, subrounded to sub-angular. Often slightly elongated | Minor carbonate component of f/g micrite. c/g crystal mosaics. With occasional ooids | ||||||
129-802A | 129-802A-4R-2,144-149 | 27.24 | Miocene | Vitric shard dominated volcaniclastic sandstone approaching hyaloclastites in composition and appearance | Average grain-size 0.2 - 0.5 mm dia. With maximum above 1mm | Common occurrence of f/g tuffaceous claystone or siltstone clasts, subrounded to sub-angular. Often slightly elongated | Minor carbonate component of f/g micrite. c/g crystal mosaics. With occasional ooids | |||||||
129-802A | 129-802A-5R-1,88-93 | 34.58 | Miocene | Vitric shard dominated volcaniclastic sandstone approaching hyaloclastites in composition and appearance | Average grain-size 0.2 - 0.5 mm dia. With maximum above 1mm | Common occurrence of f/g tuffaceous claystone or siltstone clasts, subrounded to sub-angular. Often slightly elongated | Occasional nannofossil debris | Minor carbonate component of f/g micrite. c/g crystal mosaics. With occasional ooids | ||||||
129-802A | 129-802A-5R-2,38-43 | 35.58 | Miocene | Vitric shard dominated volcaniclastic sandstone approaching hyaloclastites in composition and appearance | Average grain-size 0.2 - 0.5 mm dia. With maximum above 1mm | Common occurrence of f/g tuffaceous claystone or siltstone clasts, subrounded to sub-angular. Often slightly elongated | Basaltic clasts rarely exceed 5% | Occasional nannofossil debris | Minor carbonate component of f/g micrite. c/g crystal mosaics. With occasional ooids | |||||
129-802A | 129-802A-6R-2,54-60 | 44.94 | Miocene | Vitric shard dominated volcaniclastic sandstone approaching hyaloclastites in composition and appearance | Average grain-size 0.2 - 0.5 mm dia. With maximum above 1mm | Common occurrence of f/g tuffaceous claystone or siltstone clasts, subrounded to sub-angular. Often slightly elongated | Basaltic clasts rarely exceed 5% | Occasional nannofossil debris | Minor carbonate component of f/g micrite. c/g crystal mosaics. With occasional ooids | |||||
129-802A | 129-802A-7R-1,64-69 | 53.04 | Miocene | F/g laminated tuff. highty altered C/g badly sorted volcaniclastic sandstones, almost hyato clastites | 0.1 - 0.3 mm | Common occurrence of f/g tuffaceous claystone or siltstone clasts, subrounded to sub-angular. Often slightly elongated | None recognizable | Highly altered to clay mineral | Minor-tachylite | Rare Cpx. Ore. Plag. | ||||
129-802A | 129-802A-8R-1,35-41 | 62.25 | Miocene | F/g laminated tuff. highty altered C/g badly sorted volcaniclastic sandstones, almost hyato clastites | 0.3 - 0.5 mm dia, with maximum above 1mm | Common occurrence of f/g tuffaceous claystone or siltstone clasts, subrounded to sub-angular. Often slightly elongated | Large highly vesicular scoriae to 2 mm dia but not abundant | Highly altered to clay mineral | Small basaltic clasts, but not abundant | Small, not abundant Cpx only | ||||
129-802A | 129-802A-8R-CC,0-6 | 64.85 | Miocene | F/g laminated tuff. highty altered C/g badly sorted volcaniclastic sandstones, almost hyato clastites | 0.3 - 0.5 mm dia, with maximum above 1mm | Common occurrence of f/g tuffaceous claystone or siltstone clasts, subrounded to sub-angular. Often slightly elongated | Large highly vesicular scoriae to 2 mm dia but not abundant | Highly altered to clay mineral | Small basaltic clasts, but not abundant | Small, not abundant Cpx only | ||||
129-802A | 129-802A-10R-3,7-13 | 83.47 | Miocene | F/g laminated tuff. highty altered C/g badly sorted volcaniclastic sandstones, almost hyato clastites | 0.3 - 0.5 mm dia, with maximum above 1mm | Common occurrence of f/g tuffaceous claystone or siltstone clasts, subrounded to sub-angular. Often slightly elongated | ||||||||
129-802A | 129-802A-11R-1,76-80 | 90.36 | Miocene | Hyaloclastites | 0.3 - 0.5 mm dia, with maximum above 1mm | Common occurrence of f/g tuffaceous claystone or siltstone clasts, subrounded to sub-angular. Often slightly elongated | Cpx and plage. only, rare | |||||||
129-802A | 129-802A-14R-2,81-85 | 116.71 | Miocene | C/g volcaniclastic sandstones. All reworked vitric-crystal-lithic tuffs almost clast supported | Average grain-size between 0.2 mm and 1.5 or 2.0 mm, May reach 3 mm | Subrounded to subangular, slightly laminated volcanic ash with grain-size between 0.01 and 0.5 mm Indurated hyaloclastite | Dominant matrix compant. Large irregular shards. Many with olivine pheno. Crysts, a few with plag. Shardic outlines com trolled by vesicular scoriae, most not. Dominant, Simple spalling and bubble shards | Fresh sideromelane present as cores to shards, marginally altered to pale golden-brown palagonite. Some spheroidal alteration to smectite | Very prominent through-out. Mostly large fractured euhedral olivine. Some plag. Fe-ore. Cpx very rare | |||||
129-802A | 129-802A-15R-1,19-24 | 122.29 | Miocene | C/g volcaniclastic sandstones. All reworked vitric-crystal-lithic tuffs almost clast supported | Average grain-size between 0.2 mm and 1.5 or 2.0 mm, May reach 3 mm | Subrounded to subangular, slightly laminated volcanic ash with grain-size between 0.01 and 0.5 mm Indurated hyaloclastite | Dominant matrix compant. Large irregular shards. Many with olivine pheno. Crysts, a few with plag. Shardic outlines com trolled by vesicular scoriae, most not. Dominant, Simple spalling and bubble shards | Fresh sideromelane present as cores to shards, marginally altered to pale golden-brown palagonite. Some spheroidal alteration to smectite | Very prominent through-out. Mostly large fractured euhedral olivine. Some plag. Fe-ore. Cpx very rare | |||||
129-802A | 129-802A-16R-1,128-133 | 123.38 | Miocene | C/g volcaniclastic sandstones. All reworked vitric-crystal-lithic tuffs almost clast supported | Average grain-size between 0.2 mm and 1.5 or 2.0 mm, May reach 3 mm | Subrounded to subangular, slightly laminated volcanic ash with grain-size between 0.01 and 0.5 mm Indurated hyaloclastite | Dominant matrix compant. Large irregular shards. Many with olivine pheno. Crysts, a few with plag. Shardic outlines com trolled by vesicular scoriae, most not. Dominant, Simple spalling and bubble shards | Fresh sideromelane present as cores to shards, marginally altered to pale golden-brown palagonite. Some spheroidal alteration to smectite | Very prominent through-out. Mostly large fractured euhedral olivine. Some plag. Fe-ore. Cpx very rare | |||||
129-802A | 129-802A-17R-2,54-61 | 142.44 | Miocene | C/g volcaniclastic sandstones. All reworked vitric-crystal-lithic tuffs almost clast supported | Average grain-size between 0.2 mm and 1.5 or 2.0 mm, May reach 3 mm | Subrounded to subangular, slightly laminated volcanic ash with grain-size between 0.01 and 0.5 mm Indurated hyaloclastite | Dominant matrix compant. Large irregular shards. Many with olivine pheno. Crysts, a few with plag. Shardic outlines com trolled by vesicular scoriae, most not. Dominant, Simple spalling and bubble shards | Fresh sideromelane present as cores to shards, marginally altered to pale golden-brown palagonite. Some spheroidal alteration to smectite | Very prominent through-out. Mostly large fractured euhedral olivine. Some plag. Fe-ore. Cpx very rare | |||||
129-802A | 129-802A-23R-1,60-64 | 197.00 | Miocene | F/g laminated volcaniclastic sandstone redeposited hyaloclastite | Rounded f/g tuffaceous clasts to 0.75 mm long | Dominant matrix compant. Large irregular shards. Many with olivine pheno. Crysts, a few with plag. Shardic outlines com trolled by vesicular scoriae, most not. Dominant, Simple spalling and bubble shards | Some fresh glass, but most palagonitized | Essentially quenched basalt | Mostly Cpy. But some fresh plag., up to 10% | Abundant nannofossils forams and radiolarians | ||||
129-802A | 129-802A-27R-2,66-73 | 237.26 | Miocene | C/g volcaniclastic sandstones | Mostly blocky shards, some vesicle controlled shapes, a few highly vesicular, Probably dominant compot. | Highly altered to brown smectite | Wide variety of basaltic types subordinate to vitric material | Fresh Cpx and lasser plag Occas, Fe-ore and olivine pseudomorphs Not abundant. | Abundant bioclastic material, c25% of mode | Occasional small glauconite pellets |