Ogg, James G; Robertson, Alastair H F; Jansa, Lubomir F (1983): (Table 7) Microfacies of DSDP Hole 76-534A lime-rich turbidites (Oxfordian-late Callovian) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.810026, In supplement to: Ogg, JG et al. (1983): Jurassic sedimentation history of Site 534 (western North Atlantic) and of the Atlantic-Tethys Seaway. In: Sheridan, RE; Gradstein, FM; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 76, 829-884, https://doi.org/10.2973/dsdp.proc.76.141.1983
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Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Latitude: 28.343300 * Longitude: -75.381700
Date/Time Start: 1980-10-21T00:00:00 * Date/Time End: 1980-10-21T00:00:00
Minimum Elevation: -4971.0 m * Maximum Elevation: -4971.0 m
Event(s):
76-534A * Latitude: 28.343300 * Longitude: -75.381700 * Date/Time: 1980-10-21T00:00:00 * Elevation: -4971.0 m * Penetration: 1666.5 m * Recovery: 612.4 m * Location: North Atlantic/BASIN * Campaign: Leg76 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 127 cores; 1113.1 m cored; 31.5 m drilled; 55 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Ogg, James G | DSDP/ODP/IODP sample designation | ||
| 2 | Lithology/composition/facies | Lithology | Ogg, James G | |||
| 3 | Bioclasts | Bioclasts | Ogg, James G | |||
| 4 | Minor components/lithology | Min comp | Ogg, James G | Silt-sized components | ||
| 5 | Comment | Comment | Ogg, James G |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
85 data points
Data
| 1 Sample label | 2 Lithology | 3 Bioclasts | 4 Min comp | 5 Comment |
|---|---|---|---|---|
| 76-534A-115-1,12 | Marly pelmicrite limestone | Calcified radiolarians (rare), shell fragments (rare) | Quartz (6), mica (3), pyrite, opaques (tr) | Micrite has a pelletoid texture |
| 76-534A-115-1,17 | Marly micrite | None | Quartz (5), clastic calcite (5), mica (3), opaques (2), phosphate (rare) | Calcite is 20-30 µm, with no identifiable biogenic origin; Chondrites burrows are filled by clay |
| 76-534A-116-1,70 | Radiolarian biomicrite | Calcified radiolarians (30) | Opaques (1-2) | Radiolarians are spar or microspar filled; no pyrite |
| 76-534A-118-1,19 | Biomicrite | Calcified radiolarians (7), echinoderm plates (3), shell fragments (2) | Pyrite, phosphate (rare) | Micrite has a pelletoid or clotted texture |
| 76-534A-118-1,29 | Laminated pelmicrite | Echinoderm plates (4), shell fragments (2), benthic foraminifers (rare) | Phosphate (rare) | Pelletoid texture; laminae are more porous, with interlocking grains of calcite |
| 76-534A-118-1,83 | Sparse biomicrite | Calcified radiolarians (6), shell fragments (rare) | Quartz, mica (rare) | Dense micrite; bioturbated |
| 76-534A-120-1,44 | Marly micrite | None | Clastic calcite (2), organics (4), quartz, phosphate, and pyrite (rare) | Top of turbidite; clay and amorphous organics increase toward top |
| 76-534A-120-1,48 | Bioclastic pelmicrite | Silicified radiolarians (17), shell fragments (9), echinoderm plates (2) | Pyrite (rare) | Well-sorted mix of micrite pelets, quartz-replaced radiolarians, and shell filaments, coarse-grained base of turbidite |
| 76-534A-121-1,6 | Marly micrite | None | Quartz (2), mica (3), opaques (3) | Top of turbidite; Chondrites burrows are clay-rich; there is a sharp upper contact with claystone |
| 76-534A-121-1,26 | Radiolarian biomicrite | Pyrite-replaced radiolarians (11), Calcified radiolarians (6), shell fragments (3) | Pyrite, phosphate (rare) | Middle of a thick (45 + cm) turbidite |
| 76-534A-122-1,2 | Pelmicrite and bioclastic pelletal microsparite | Radiolaria, calcified (up to 7), shell filaments (1), benthic foraminifers (1), calcispheres (rare) | Quartz (up to 6), pyrite, phosphate (1), pellets (30-50 µm) (35) | Base of turbidite; concentration of bioclasts in microspar at base; lamination is caused by variable pellet density-size |
| 76-534A-122-1,67 | Marly bioclastic pelmicrite | Fine shell fragments (8), pyritized radiolarians (2), echinoderm debris, calcispheres (1) | Quartz (rare) | Middle of turbidite; pelletoid texture |
| 76-534A-122-2,41 | Marly micrite | None | Organics (6), quartz (4), mica (2), clastic calcite (2), | Top of turbidite; becomes very clay-rich towards top |
| 76-534A-122-2,50 | Marly biomicrite | Shell filaments (6), calcified radiolarians (1), calcified ostracode (one) | Pyrite (4) | Vaguely pelletal texture |
| 76-534A-123-4,25 | Bioclastic pelmicrite | Shell filaments (5), echinoderm debris (2), Pyrite-replaced, calcitefilled radiolarians (2), foraminifers, calcispheres (rare) | Quartz (1), phosphate (1), pyrite (1) | Base of turbidite; 30% micrite pellets; matrix is microspar in places |
| 76-534A-124-1,10 | Bioclastic pelmicrite | Shell filaments (10) pyritized radiolarians (1) | Quartz (2), phosphate (rare) | Base of turbidite; 40% micrite pellets; rare clay seams |
| 76-534A-125-1,46 | Micrite | None | Quartz (1), pyrite, organics (1) | Top of turbidite; Chondrites burrows are micrite-filled |