Murdmaa, Ivar O; Avdeiko, G P (1980): (Table 1) Coarse-fraction (0.1 to 0.05 mm) mineralogy at DSDP Leg 55 Holes [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.823308, Supplement to: Murdmaa, IO; Avdeiko, GP (1980): Volcaniclastic constituents in the Leg 55 sediments. In: Jackson, ED; Koisumi, I; et al., (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 55, 503-505, https://doi.org/10.2973/dsdp.proc.55.119.1980
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Abstract:
This chapter was previously intended to trace volcanic episodes through the Neogene and Pleistocene geological history recorded in the sedimentary sections drilled on the Emperor seamounts. Drilling disturbance, poor core recovery, and incomplete stratigraphic sections recovered from the seamounts have frustrated that plan, however. Moreover, the Leg 55 sedimentologists found in their smear-slide studies that transported island-arc tephra is scarce in the sediments, if present at all. So we have restricted our objective to description of the volcaniclastic admixture in sediments, as determined by mineralogical and geochemical data. We studied geochemistry of bulk samples (see Murdmaa et al., 1980), coarse-fraction mineralogy, and additional smear slides. The results obtained, however, do not tell much more about the volcaniclastic matter than did shipboard core descriptions.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 42.217250 * Median Longitude: 170.252825 * South-bound Latitude: 37.981300 * West-bound Longitude: 170.020500 * North-bound Latitude: 44.777200 * East-bound Longitude: 170.590800
Date/Time Start: 1977-08-01T00:00:00 * Date/Time End: 1977-08-16T00:00:00
Minimum Elevation: -1874.0 m * Maximum Elevation: -1310.0 m
Event(s):
55-430 * Latitude: 37.981300 * Longitude: 170.590800 * Date/Time: 1977-08-01T00:00:00 * Elevation: -1445.0 m * Penetration: 14 m * Recovery: 7.7 m * Location: North Pacific/SEDIMENT POND * Campaign: Leg55 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 2 cores; 11.5 m cored; 2.5 m drilled; 67 % recovery
55-432 * Latitude: 41.333800 * Longitude: 170.379000 * Date/Time: 1977-08-06T00:00:00 * Elevation: -1310.0 m * Penetration: 5.5 m * Recovery: 3 m * Location: North Pacific/TERRACE * Campaign: Leg55 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 1 cores; 5.5 m cored; 0 m drilled; 54.5 % recovery
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
Comment:
#1 = present.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Latitude of event | Latitude | ||||
| 3 | Longitude of event | Longitude | ||||
| 4 | Elevation of event | Elevation | m | |||
| 5 | Sample code/label | Sample label | Murdmaa, Ivar O | DSDP/ODP/IODP sample designation | ||
| 6 | Opaque minerals | Opaque | % | Murdmaa, Ivar O | Smear slide analysis | Black; heavy fraction |
| 7 | Pyrite, FeS2 | Py | % | Murdmaa, Ivar O | Smear slide analysis | Heavy fraction |
| 8 | Iron oxide | Fe oxide | % | Murdmaa, Ivar O | Smear slide analysis | Heavy fraction |
| 9 | Garnet | Grt | % | Murdmaa, Ivar O | Smear slide analysis | Heavy fraction |
| 10 | Hornblende | Hbl | % | Murdmaa, Ivar O | Smear slide analysis | Heavy fraction |
| 11 | Orthopyroxene | Opx | % | Murdmaa, Ivar O | Smear slide analysis | Heavy fraction |
| 12 | Clinopyroxene | Cpx | % | Murdmaa, Ivar O | Smear slide analysis | Heavy fraction |
| 13 | Epidote | Ep | % | Murdmaa, Ivar O | Smear slide analysis | Group; heavy fraction |
| 14 | Zircon | Zrn | % | Murdmaa, Ivar O | Smear slide analysis | Heavy fraction |
| 15 | Apatite | Ap | % | Murdmaa, Ivar O | Smear slide analysis | Heavy fraction |
| 16 | Sphene | Spn | % | Murdmaa, Ivar O | Smear slide analysis | Heavy fraction |
| 17 | Barite | Brt | % | Murdmaa, Ivar O | Smear slide analysis | Heavy fraction |
| 18 | Heavy minerals | HM | % | Murdmaa, Ivar O | Smear slide analysis | Unidentified; heavy fraction |
| 19 | Quartz | Qz | % | Murdmaa, Ivar O | Smear slide analysis | Light fraction |
| 20 | Feldspar | Fsp | % | Murdmaa, Ivar O | Smear slide analysis | Light fraction; N < 1.54 |
| 21 | Plagioclase | Pl | % | Murdmaa, Ivar O | Smear slide analysis | Light fraction; N > 1.54 |
| 22 | Zeolite | Zeo | % | Murdmaa, Ivar O | Smear slide analysis | Light fraction |
| 23 | Volcanic glass | Volc glass | % | Murdmaa, Ivar O | Smear slide analysis | Light fraction |
| 24 | Carbonates | Carb | % | Murdmaa, Ivar O | Smear slide analysis | Organic; light fraction |
| 25 | Opal, biogenic silica | bSiO2 | % | Murdmaa, Ivar O | Smear slide analysis | Organic; light fraction |
| 26 | Light minerals | LM | % | Murdmaa, Ivar O | Smear slide analysis | Unidentified; light fraction |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
286 data points