Dalrymple, G Brent; Lanphere, Marvin A; Clague, David A (1980): (Table 1) Alteration summary and relative suitability, based on petrographic examinations, for K-Ar dating of DSDP Leg 55 Holes [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.823423, In supplement to: Dalrymple, GB et al. (1980): Conventional and 40Ar/39Ar K-Ar ages of volcanic rocks from Ojin (Site 430), Nintoku (Site 432), and Suiko (Site 433) Seamounts and the chronology of volcanic propagation along the Hawaiian-Emperor Chain. In: Jackson, ED; Koisumi, I; et al., (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 55, 659-676, https://doi.org/10.2973/dsdp.proc.55.128.1980
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Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 42.730620 * Median Longitude: 170.207740 * South-bound Latitude: 37.988200 * West-bound Longitude: 170.020500 * North-bound Latitude: 44.777200 * East-bound Longitude: 170.597700
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):
55-430A * Latitude: 37.988200 * Longitude: 170.597700 * Date/Time: 1977-08-01T00:00:00 * Elevation: -1479.0 m * Penetration: 118 m * Recovery: 18.3 m * Location: North Pacific/SEDIMENT POND * Campaign: Leg55 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 9 cores; 59 m cored; 28.5 m drilled; 31.1 % recovery
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
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
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 | Dalrymple, G Brent | DSDP/ODP/IODP sample designation | ||
| 6 | Unit | Unit | Dalrymple, G Brent | Flow | ||
| 7 | Rock type | Rock | Dalrymple, G Brent | |||
| 8 | - | - | Dalrymple, G Brent | Relative suitability for dating | ||
| 9 | Size fraction < 0.002 mm, clay | <2 µm | % | Dalrymple, G Brent | ||
| 10 | Comment | Comment | Dalrymple, G Brent |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
102 data points
Data
| 1 Event | 2 Latitude | 3 Longitude | 4 Elevation [m] | 5 Sample label | 6 Unit | 7 Rock | 8 - | 9 <2 µm [%] | 10 Comment |
|---|---|---|---|---|---|---|---|---|---|
| 55-430A | 37.9882 | 170.5977 | -1479 | 55-430A-4-2,110-118 | 1 | Hawaiite | Moderately altered | 19 | Olivine replaced by iddingsite, interstitial brown clays. |
| 55-430A | 37.9882 | 170.5977 | -1479 | 55-430A-5-1,21-27 | 1 | Hawaiite | Slightly altered | 7 | Olivine replaced by brown clays, interstitial brown clays. |
| 55-430A | 37.9882 | 170.5977 | -1479 | 55-430A-6-3,52-63 | 3 | Hawaiite | Moderately altered | 16 | Olivine replaced by brown clays, interstitial green-brown clays. |
| 55-430A | 37.9882 | 170.5977 | -1479 | 55-430A-6-4,7-15 | 4 | Hawaiite | Moderately altered | 17 | Olivine replaced by brown clays, interstitial green-brown clays occasionally fill vesicles. |
| 55-430A | 37.9882 | 170.5977 | -1479 | 55-430A-6-4,140-150 | 5 | Tholeiitic basalt | Slightly altered | 3 | Olivine replaced by brown clays, occasional clay-filled vesicles. |
| 55-432A | 41.3338 | 170.3790 | -1310 | 55-432A-2-3,37-43 | 2 | Alkalic basalt | Slightly altered | 6 | Olivine replaced by iddingsite, interstitial yellow-brown clays, rare calcite. |
| 55-432A | 41.3338 | 170.3790 | -1310 | 55-432A-3-2,120-126 | 3 | Alkalic basalt | Appear to meet normal criteria for K-Ar dating, virtually unaltered | 1 | Olivine partly replaced by brown clays. |
| 55-432A | 41.3338 | 170.3790 | -1310 | 55-432A-5-2,57-66 | 3 | Alkalic basalt | Slightly to moderately altered | 2 | Olivine partly replaced by brown clays, interstitial green-brown clays. |
| 55-433A | 44.7767 | 170.0210 | -1862 | 55-433A-20-1,30-36 | 1 | Alkalic basalt | Slightly to moderately altered | 9 | Olivine replaced by brown clays and rare calcite, interstitial yellow-brown clays, plagioclase has colorless clays along fractures, fracture in rock has hematite. |
| 55-433A | 44.7767 | 170.0210 | -1862 | 55-433A-21-4,129-138 | 1 | Alkalic basalt | Slightly to moderately altered | 11 | Olivine replaced by pleochroic green-brown clays, rare vesicles filled with brown clays and rare calcite. |
| 55-433B | 44.7772 | 170.0205 | -1874 | 55-433B-5-2,61-68 | 1 | Alkalic basalt | Slightly to moderately altered | 9 | Olivine replaced by brown clays, interstitial brown clays, plagioclase has colorless clays along fractures. |
| 55-433C | 44.7772 | 170.0205 | -1874 | 55-433C-4-1,25-28 | 2 | Alkalic basalt | Slightly to moderately altered | 10 | Olivine replaced by fibrous yellow-brown clays, interstitial greenish clays. |
| 55-433C | 44.7772 | 170.0205 | -1874 | 55-433C-15-6,16-31 | 13 | Tholeiitic basalt | Slightly altered | 8 | Interstitial brown clays, some in rounded pools. |
| 55-433C | 44.7772 | 170.0205 | -1874 | 55-433C-17-1,78-82 | 13 | Tholeiitic basalt | Appear to meet normal criteria for K-Ar dating, virtually unaltered | 2 | Olivine replaced by dark brown clays, rare interstitial dark brown clay. |
| 55-433C | 44.7772 | 170.0205 | -1874 | 55-433C-28-2,73-80 | 25 | Tholeiitic basalt | Slightly to moderately altered | 5 | Interstitial brown clays, rare vesicles filled with pale brown clays. |
| 55-433C | 44.7772 | 170.0205 | -1874 | 55-433C-29-2,94-100 | 26b | Tholeiitic basalt | Moderately altered | 12 | Botryoidal greenish interstitial clays, olivine replaced with iddingsite rim filled by green and pale brown clays; plagioclase has colorless clays along fractures. |
| 55-433C | 44.7772 | 170.0205 | -1874 | 55-433C-31-1,7-13 | 27 | Tholeiitic basalt | Slightly altered | 3 | Olivine is partly replaced by brown clays along fractures, interstitial bright green clays; plagioclase cores partially replaced by bright green clays. |