Kono, Masaru; Clague, David A; Larson, Edwin E (1980): (Table 2) Reflection microscopy of Fe-Ti oxides at DSDP Hole 55-432A [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.823365, 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:
Latitude: 41.333800 * Longitude: 170.379000
Date/Time Start: 1977-08-06T00:00:00 * Date/Time End: 1977-08-06T00:00:00
Minimum Elevation: -1310.0 m * Maximum Elevation: -1310.0 m
Event(s):
55-432A * Latitude: 41.333800 * Longitude: 170.379000 * Date/Time: 1977-08-06T00:00:00 * Elevation: -1310.0 m * Penetration: 74 m * Recovery: 16.1 m * Location: North Pacific/TERRACE * Campaign: Leg55 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 5 cores; 38 m cored; 0 m drilled; 42.4 % recovery
Comment:
+++ = abundant, ++ = common, + = present, - = absent.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Kono, Masaru | DSDP/ODP/IODP sample designation | ||
| 2 | Unit | Unit | Kono, Masaru | Flow unit number and type of rock: A, alkalic basalts, T, tholeiites | ||
| 3 | Curie temperature | Curie temp | °C | Kono, Masaru | ||
| 4 | Type | Type | Kono, Masaru | Optical microscopy | Type of thermomagnetic curve: NO, no oxidation, HT, high-temperature oxidation, LT, low-temperature oxidation | |
| 5 | Stage | Stage | Kono, Masaru | Optical microscopy | Oxidation stage = degree of high-temperature oxidation of titanomagnetite: N, L, M, H = no, low, moderate, high oxidation | |
| 6 | Ilmenite | Ilm | Kono, Masaru | Optical microscopy | Presence of ilmenite lamellae in (III) planes of (titano-) magnetite host crystal | |
| 7 | Pseudobrookite | Psb | Kono, Masaru | Optical microscopy | Presence of pseudobrookite as oxidation product of Ti-rich phase | |
| 8 | Titanomagnetite | Timag | Kono, Masaru | Optical microscopy | Presence of low-temperature oxidation product | |
| 9 | Comment | Comment | Kono, Masaru |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
97 data points
Data
| 1 Sample label | 2 Unit | 3 Curie temp [°C] | 4 Type | 5 Stage | 6 Ilm | 7 Psb | 8 Timag | 9 Comment |
|---|---|---|---|---|---|---|---|---|
| 55-432A-2-1,74-76 | 1 (A) | 373 | LT | L-M | + | - | + | Early stage of maghemitization indicated by bluishgray tint and shrinkage cracks. |
| 55-432A-2-1,107-109 | 1 (A) | 364 | LT | L-M | + | - | + | Low-grade maghemitization. |
| 55-432A-2-2,23-25 | 2 (A) | 575 | HT | H | ++ | +++ | - | Silicate replacement abundant. Ilmenite lamellae replaced by pseudobrookite and hematite. |
| 55-432A-2-2,72-74 | 2 (A) | 572 | HT | M | +++ | + | - | Reddening of silicate common. |
| 55-432A-2-3,12-14 | 2 (A) | 457 | LT | L-M | ++ | - | + | Titanomagnetite shows blue-gray color. Shrinkage cracks present. |
| 55-432A-2-3,21-23 | 2 (A) | L-M | ++ | - | ++ | Moderate maghemitization. | ||
| 55-432A-3-2,67-69 | 3 (A) | 187 | NO | N | - | - | - | Homogeneous equant titanomagnetite crystals of 20 µm or less. Brown color. |
| 55-432A-4-1,64-66 | 3 (A) | 550 | HT | M-H | +++ | + | - | Abundant replacement of silicates. |
| 55-432A-4-1,120-122 | 3 (A) | 391 | LT | L-M | ++ | - | ++ | Wide ilmenite lamellae. Some big grains 20-100 µ_m. |
| 55-432A-4-2,80-82 | 3 (A) | 577 | HT | M | +++ | - | trace | Maghemitization shown by bluish-gray color and shrinkage cracks. |
| 55-432A-5-2,69-71 | 3 (A) | 299 | LT | L-M | + | - | + | Pyrite is present, filling cracks in silicates and oxides. |