Kono, Masaru; Clague, David A; Larson, Edwin E (1980): (Table 3) Reflection microscopy of Fe-Ti oxides at DSDP Site 55-433 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.823367, In supplement to: Kono, M et al. (1980): Fe-Ti oxide mineralogy of DSDP Leg 55 basalts. In: Jackson, ED; Koisumi, I; et al., (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 55, 639-652, https://doi.org/10.2973/dsdp.proc.55.126.1980
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Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 44.776950 * Median Longitude: 170.020750 * South-bound Latitude: 44.776700 * West-bound Longitude: 170.020500 * North-bound Latitude: 44.777200 * East-bound Longitude: 170.021000
Date/Time Start: 1977-08-16T00:00:00 * Date/Time End: 1977-08-16T00:00:00
Minimum Elevation: -1874.0 m * Maximum Elevation: -1862.0 m
Event(s):
55-433A * Latitude: 44.776700 * Longitude: 170.021000 * Date/Time: 1977-08-16T00:00:00 * Elevation: -1862.0 m * Penetration: 174 m * Recovery: 88.6 m * Location: North Pacific/SEAMOUNT * Campaign: Leg55 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 21 cores; 174 m cored; 0 m drilled; 50.9 % recovery
55-433C * Latitude: 44.777200 * Longitude: 170.020500 * Date/Time: 1977-08-16T00:00:00 * Elevation: -1874.0 m * Penetration: 550.5 m * Recovery: 250 m * Location: North Pacific/SEAMOUNT * Campaign: Leg55 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 48 cores; 381.5 m cored; 6 m drilled; 65.5 % recovery
Comment:
+++ = abundant, ++ = common, + = present, - = absent.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Sample code/label | Sample label | Kono, Masaru | DSDP/ODP/IODP sample designation | ||
| 3 | Unit | Unit | Kono, Masaru | Flow unit number and type of rock: A, alkalic basalts, T, tholeiites | ||
| 4 | Curie temperature | Curie temp | °C | Kono, Masaru | ||
| 5 | Type | Type | Kono, Masaru | Optical microscopy | Type of thermomagnetic curve: NO, no oxidation, HT, high-temperature oxidation, LT, low-temperature oxidation | |
| 6 | Stage | Stage | Kono, Masaru | Optical microscopy | Degree of high-temperature oxidation of titanomagnetite: N, L, M, H = no, low, moderate, high oxidation | |
| 7 | Ilmenite | Ilm | Kono, Masaru | Optical microscopy | Presence of ilmenite lamellae in (III) planes of (titano-) magnetite host crystal | |
| 8 | Pseudobrookite | Psb | Kono, Masaru | Optical microscopy | Presence of pseudobrookite as oxidation product of Ti-rich phase | |
| 9 | Titanomagnetite | Timag | Kono, Masaru | Optical microscopy | Presence of low-temperature oxidation product | |
| 10 | Comment | Comment | Kono, Masaru |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
663 data points
Data
| 1 Event | 2 Sample label | 3 Unit | 4 Curie temp [°C] | 5 Type | 6 Stage | 7 Ilm | 8 Psb | 9 Timag | 10 Comment |
|---|---|---|---|---|---|---|---|---|---|
| 55-433A | 55-433A-20-2,2-4 | 1 (A) | 581 | HT | M | +++ | - | - | Some ilmenite altered to metailmenite. Mostly well-formed crystals of << 30 µm. Some grains as large as 100 µm. |
| 55-433A | 55-433A-20-2,14-16 | 1 (A) | 580 | HT | M | +++ | - | - | Similar to above. Some pyrites present. |
| 55-433A | 55-433A-20-2,24-26 | 1 (A) | 580 | HT | M | +++ | - | - | Some silicates reddened. |
| 55-433C | 55-433C-10-3,92-94 | 4 (T) | 569 | HT | H | +++ | +++ | - | Mostly skeletal crystals, extremely oxidized. Ilmenite lamellae and some silicates replaced. |
| 55-433C | 55-433C-10-3,145-147 | 4 (T) | 569 | HT | M-H | +++ | ++ | - | Variable oxidation stages in the sample. Grains near vesicles highly oxidized to pseudobrookite. |
| 55-433C | 55-433C-10-4,69-71 | 4 (T) | 572 | HT | H | +++ | +++ | - | Similar to above. Very tiny grain present. |
| 55-433C | 55-433C-10-6,38-40 | 5 (T) | 574 | HT | H | ++ | +++ | - | Similar to above. Many silicates replaced. |
| 55-433C | 55-433C-11-1,139-141 | 6 (T) | 573 | HT | H | ++ | +++ | - | |
| 55-433C | 55-433C-11-3,84-86 | V (T) | 579 | HT | M | +++ | - | - | Granulation, metailmenites, reddening of silicates present. |
| 55-433C | 55-433C-11-3,112-114 | 7 (T) | 582 | HT | L-M | + | - | - | Fine-scale granulation. |
| 55-433C | 55-433C-11-5,36-38 | 8 (T) | 539 | HT | L+H | + | +++ | - | Variable oxidation. Some grains homogeneous, others completely altered to pseudobrookite. |
| 55-433C | 55-433C-12-1,109-111 | 9 (T) | 554 | HT | H | ++ | +++ | - | Silicate reddened and replaced. |
| 55-433C | 55-433C-12-3,5-7 | 9 (T) | 264 | LT | L-M | ++ | - | ++ | Shrinkage cracks. |
| 55-433C | 55-433C-13-2,103-105 | 10 (T) | 543 | HT | M-H | ++ | - | - | Granulation and reddening common. |
| 55-433C | 55-433C-14-2,37-39 | 11A (T) | 574 | HT | H | - | - | - | All microcrystals or skeletal crystals. Hematite very common, replaces original magnetite. |
| 55-433C | 55-433C-15-1,17-19 | 11B (T) | 376 | LT | L-M | + | - | + | Many big crystals (<100 µm) and tiny skeletal grains (about 1 µm). Few shrinkage cracks. |
| 55-433C | 55-433C-15-4,48-50 | 12 (T) | 551 | HT | M-H | - | ++ | - | Very fine grained. Two states of oxidation. Near vesicles very high, others moderate. |
| 55-433C | 55-433C-15-4,84-86 | 12 (T) | 539 | HT | M-H | - | ++ | - | Similar to above. Very fine grained quenched minerals. |
| 55-433C | 55-433C-15-5,72-74 | 13 (T) | 583 | HT | M-H | +++ | ++ | - | Hematite replaces magnetite. Silicates become very red. |
| 55-433C | 55-433C-16-1,80-82 | 13 (T) | 246 | LT | L | + | - | + | Almost every titanomagnetite has ilmenite crystal attached to it. Either crystallized simultaneously or ilmenite separated by diffusion. |
| 55-433C | 55-433C-19-2,9-11 | 14 (T) | 576 | HT | M-H | +++ | - | - | Silicates very red. |
| 55-433C | 55-433C-19-2,40-42 | 14 (T) | 577 | HT | H | +++ | +++ | - | Ilmenite lamellae altered to metailmenite. Some granulation present. Very red silicates. |
| 55-433C | 55-433C-19-2,64-66 | 14 (T) | 546 | HT | H | +++ | ++ | - | Similar to above. Lots of skeletal grains present. |
| 55-433C | 55-433C-19-3,74-76 | 15A (T) | 574 | HT | L | - | - | + | Titanomagnetite grains have elongated shape, with no lamellae. Partly replaced by titanomagnetite. |
| 55-433C | 55-433C-20-1,103-105 | 15B (T) | 397 | LT | L | + | - | - | Fine grains. Titanomagnetite not detected. |
| 55-433C | 55-433C-20-2,20-22 | 15B (T) | 334 | LT | L-M | ++ | - | - | Some grains contain abundant ilmenite lamellae, others do not. Some pyrites present. |
| 55-433C | 55-433C-20-2,35-37 | 15B (T) | 367 | LT | L | + | - | + | Some grains show granulation. |
| 55-433C | 55-433C-21-2,128-130 | 16 (T) | 520 | HT | L+H | + | ++ | - | Variable oxidation, but mostly homogeneous grains with few lamellae. Some grains near vesicles show extremely high oxidation with pseudobrookite. |
| 55-433C | 55-433C-21-3,7-9 | 17 (T) | 532 | HT | L-M | + | - | - | Smaller grains of euhedral shape are homogeneous. Larger grains (about 50 µm) contain ilmenite lamellae. |
| 55-433C | 55-433C-21-4,64-66 | 17 (T) | 421 | LT | L-M | + | - | - | Simple, well-formed crystals of the size 15-20 µm. |
| 55-433C | 55-433C-21-4,101-103 | 17 (T) | 375 | LT | L-M | + | - | + | Granulation common in larger grains. |
| 55-433C | 55-433C-22-1,104-106 | 18 (T) | 537 | HT | M-H | ++ | ++ | - | Hematite and reddening of silicates common. |
| 55-433C | 55-433C-25-2,7-9 | 20 (T) | 581 | HT | M-H | + | ++ | - | Most magnetite grains are extremely fine-grained and appear in glass. |
| 55-433C | 55-433C-25-2,27-29 | 20 (T) | 570 | HT | M-H | ++ | ++ | - | All opaque minerals granulated. Lamellae replaced by metailmenites. |
| 55-433C | 55-433C-25-2,54-56 | 20 (T) | 561 | HT | L-M | - | - | - | Titanomagnetites very fine grained because of quenching. Silicates are not reddened. |
| 55-433C | 55-433C-25-5,103-105 | 21 (T) | 576 | HT | M | +++ | - | - | Little reddening of silicates. |
| 55-433C | 55-433C-26-5,94-96 | 22 (T) | 572 | HT | L | + | - | + | Largest grains measure about 100 µm. Fine-scale granulation. |
| 55-433C | 55-433C-26-6,49-51 | 23 (T) | 553 | HT | M | + | - | - | Tiny grains exist in glass. |
| 55-433C | 55-433C-26-6,129-131 | 23 (T) | 535 | HT | M | + | - | - | Ilmenites are large, bar-line crystals, but titanomagnetites are very small. |
| 55-433C | 55-433C-27-5,41-43 | 24 (T) | 541 | HT | M | - | - | - | Quenched tiny crystals of titanomagnetite. |
| 55-433C | 55-433C-28-4,121-123 | 26A (T) | 580 | HT | M-H | - | - | - | Titanomagnetites are fine grained. Very red silicates. Granulation common. |
| 55-433C | 55-433C-29-2,115-117 | 26B (T) | 492 | LT | M-H | - | - | - | Very fine grained titanomagnetites in the glass. Very red silicates. |
| 55-433C | 55-433C-31-4,83-85 | 28A (T) | 562 | HT | M-H | - | - | - | Same as above. |
| 55-433C | 55-433C-32-1,38-40 | 28B (T) | 558 | HT | M-H | - | ++ | - | Same as above. |
| 55-433C | 55-433C-32-1,112-114 | 28B (T) | 582 | HT | M-H | - | - | - | Same as above. Pyrites common. |
| 55-433C | 55-433C-35-1,112-114 | 35 (T) | 546 | HT | M-H | ++ | ++ | - | Some granulation present. Grains are bigger. |
| 55-433C | 55-433C-35-6,48-50 | 35 (T) | 557 | HT | L+H | ++ | +++ | - | Variable oxidation states coexist: some grains are homogeneous with no lamellae, others contain pseudobrookite. |
| 55-433C | 55-433C-35-6,121-123 | 36 (T) | 573 | HT | H | ++ | +++ | - | All the titanomagnetites oxidized to hematite and pseudobrookite. Most silicates reddened and replaced. |
| 55-433C | 55-433C-35-7,116-118 | 36 (T) | 583 | HT | M-H | ++ | ++ | - | Mostly small grains in glass, but also some larger grains of about 20 µm. |
| 55-433C | 55-433C-36-1,45-47 | 36 (T) | 576 | HT | M | ++ | - | - | Skeletal grains. Silicates are reddened. |
| 55-433C | 55-433C-36-1,105-107 | 37 (T) | 577 | HT | M | ++ | - | - | Similar to above. |
| 55-433C | 55-433C-36-3,60-62 | 38 (T) | 577 | HT | M-H | ++ | ++ | - | Some large skeletal grains exist, but mostly small grains (2-3 µm). Silicates are reddened. |
| 55-433C | 55-433C-36-4,56-58 | 39 (T) | 528 | HT | L-M | - | - | - | Fresh titanomagnetites of various size. |
| 55-433C | 55-433C-37,3,74-76 | 44 (T) | 534 | HT | M | + | - | - | Very fine titanomagnetite grains abundant. |
| 55-433C | 55-433C-38-1,57-59 | 45 (T) | 577 | HT | L-M | - | - | - | No lamellae but small-scale granulation present. |
| 55-433C | 55-433C-38-5,119-121 | 47 (T) | 364 | LT | L | - | - | + | Small-scale granulation. Some grains have cracks. |
| 55-433C | 55-433C-39-5,96-98 | 48 (T) | 581 | HT | L-M | - | - | - | Some granulation. Silicates slightly reddened. |
| 55-433C | 55-433C-39-6,78-80 | 48 (T) | 573 | HT | L-M | - | - | - | Same as above. |
| 55-433C | 55-433C-41-1,51-53 | 51B (T) | 573 | HT | M-H | +++ | ++ | - | Silicates reddened. |
| 55-433C | 55-433C-42-1,68-70 | 52 (T) | M-H | +++ | ++ | - | Same as above. | ||
| 55-433C | 55-433C-42-2,136-138 | 53 (T) | 573 | HT | M-H | +++ | ++ | - | Same as above. |
| 55-433C | 55-433C-42-5,134-136 | 54 (T) | 425 | LT | M | ++ | + | + | Small and large (up to 200 µm) grains coexist. A few maghemite cracks. |
| 55-433C | 55-433C-43-1,33-35 | 54 (T) | 578 | HT | H | +++ | +++ | - | Silicates reddened. |
| 55-433C | 55-433C-44-1,41-43 | 56 (T) | 578 | HT | M-H | - | - | - | Abundant small crystals highly oxidized and appear reddened. |
| 55-433C | 55-433C-44-4,108-110 | 58 (T) | 553 | HT | M | - | - | - | Abundant fine titanomagnetite grains. Some granulation and reddening of silicates. |
| 55-433C | 55-433C-45-2,45-47 | 59 (T) | 553 | HT | M | - | - | - | Similar to above. |
| 55-433C | 55-433C-45-5,51-53 | 60 (T) | 371 | LT | L-M | + | - | +++ | Larger grains are not much HT oxidized. |
| 55-433C | 55-433C-45-6,43-45 | 60 (T) | 431 | LT | L-M | ++ | - | ++ | Larger grains with ilmenite lamellae. |
| 55-433C | 55-433C-46-3,54-56 | 60 (T) | 579 | HT | H | ++ | +++ | - | Pseudobrookite, metailmenite, reddening and replacement of silicate very abundant. |
| 55-433C | 55-433C-47-1,26-28 | 63 (T) | 579 | HT | M | ++ | - | - | Large and small grains of titanomagnetite. Some granulation. |
| 55-433C | 55-433C-47-5,25-27 | 64 (A) | 472 | LT | M | - | - | - | Well-formed, equant crystals with some granulation. |
| 55-433C | 55-433C-48-3,30-32 | 64 (A) | 575 | HT | M-H | +++ | ++ | - | Reddened silicates abundant. |
| 55-433C | 55-433C-49-1,142-144 | 66 (T) | 577 | HT | M-H | +++ | ++ | - | Same as above. |
| 55-433C | 55-433C-49-2,50-52 | 66 (T) | 575 | HT | M-H | ++ | ++ | - | Similar to above. |