Pertsev, Nikolay N; Boronikhin, V A (1983): (Table 2) Geochemistry of K-feldspars and associated plagioclase phenocrysts and rims at DSDP Legs 69, 52, 51 and 19 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.816468, Supplement to: Pertsev, NN; Boronikhin, VA (1983): Secondary K-feldspar in basalts at Deep Sea Drilling Project Hole 504B and the problem of K-feldspathization in oceanic basalts. In: Cann, JR; Langseth, MG; Honnorez, J; Von Herzen, RP; White, SM; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 69, 589-591, https://doi.org/10.2973/dsdp.proc.69.132.1983
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Abstract:
Basalts from some holes of the Deep Sea Drilling Project contain secondary K-feldspar which forms pseudomorphs after calcic (>76% An) Plagioclase cores, whereas Plagioclase of rims and microlites (68-74% An) remains unaltered. In basalts of Hole 504B two such grains with relics of Plagioclase in the central parts of phenocysts were recovered. The composition of the Plagioclase rims and of non-replaced phenocrysts is An79-81; the composition of relics is An83. The An and Ab contents of the K-feldspar is higher than in K-feldspar from altered basalt in Hole 418A in the Atlantic Ocean near the Bermuda Rise. Replacement of plagioclases by K-feldspar evidently is caused by oxygen-rich nearbottom sea water penetrating into basalts. The temperature interval of K-feldspathization is probably in the range 30 to 80°C, more-calcic Plagioclase being replaced by K-feldspar at higher temperatures.
Related to:
Pertsev, Nikolay N; Rusinov, V L (1980): Mineral assemblages and processes of alterations in basalts at Deep Sea Drilling Project Sites 417 and 418. In: Donnelly, T; Francheteau, J; Bryan, W; Robinson, P; Flower, M; Salisbury, M; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 51-53, 1219-1242, https://doi.org/10.2973/dsdp.proc.515253.148.1980
Stewart, Richard J; Natland, James H; Glassley, William R (1973): Petrology of volcanic rocks recovered on DSDP Leg 19 from the North Pacific Ocean and the Bering Sea. In: Creager, JS; Scholl, DW; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Government Print Office), 19, 615-627, https://doi.org/10.2973/dsdp.proc.19.114.1973
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 21.260440 * Median Longitude: -99.780720 * South-bound Latitude: 1.227200 * West-bound Longitude: 164.713500 * North-bound Latitude: 53.009500 * East-bound Longitude: -68.041300
Date/Time Start: 1971-08-30T00:00:00 * Date/Time End: 1979-10-07T00:00:00
Minimum Elevation: -5511.0 m * Maximum Elevation: -3014.0 m
Event(s):
19-192A * Latitude: 53.009500 * Longitude: 164.713500 * Date/Time: 1971-08-30T00:00:00 * Elevation: -3014.0 m * Penetration: 1057 m * Recovery: 37.7 m * Location: North Pacific/GUYOT * Campaign: Leg19 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 6 cores; 47 m cored; 0 m drilled; 80.2 % recovery
51-417 * Latitude: 25.110500 * Longitude: -68.041300 * Date/Time: 1976-12-02T00:00:00 * Elevation: -5468.0 m * Penetration: 8.5 m * Recovery: 2.1 m * Location: North Atlantic/CONT RISE * Campaign: Leg51 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 1 cores; 8.5 m cored; 0 m drilled; 24.7 % recovery
52-418A * Latitude: 25.035000 * Longitude: -68.057300 * Date/Time: 1977-02-10T00:00:00 * Elevation: -5511.0 m * Penetration: 570.5 m * Recovery: 205.5 m * Location: North Atlantic/CONT RISE * Campaign: Leg52 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 48 cores; 374 m cored; 0 m drilled; 54.9 % recovery
Comment:
Calculation of mineral composition in percent was made on the assumption that the sum of atomic amounts of Ca, K, and Na is equal to 1.0.
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 | Pertsev, Nikolay N | DSDP/ODP/IODP sample designation | ||
| 6 | Piece | Piece | Pertsev, Nikolay N | |||
| 7 | Reference/source | Reference | Pertsev, Nikolay N | |||
| 8 | Minerals | Minerals | Pertsev, Nikolay N | |||
| 9 | Sample ID | Sample ID | Pertsev, Nikolay N | |||
| 10 | Silicon dioxide | SiO2 | % | Pertsev, Nikolay N | Electron microprobe (EMP) | |
| 11 | Aluminium oxide | Al2O3 | % | Pertsev, Nikolay N | Electron microprobe (EMP) | |
| 12 | Calcium oxide | CaO | % | Pertsev, Nikolay N | Electron microprobe (EMP) | |
| 13 | Potassium oxide | K2O | % | Pertsev, Nikolay N | Electron microprobe (EMP) | |
| 14 | Sodium oxide | Na2O | % | Pertsev, Nikolay N | Electron microprobe (EMP) | |
| 15 | Total | Total | % | Pertsev, Nikolay N | Electron microprobe (EMP) | |
| 16 | Anorthite | An | % | Pertsev, Nikolay N | Calculated | |
| 17 | Orthoclase | Or | % | Pertsev, Nikolay N | Calculated | |
| 18 | Albite | Ab | % | Pertsev, Nikolay N | Calculated |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
249 data points