Barrett, T J; Friedrichsen, Hans (1982): (Table 3) Pb- and Sr-isotopic compositions of selected samples of nontronite, Mn-oxide crust, Mn-Fe-oxide mud, and pelagic sediments from the Galapagos mounds area, Leg 70 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.695904, In supplement to: Barrett, TJ; Friedrichsen, H (1982): Elemental and isotopic compositions of some metalliferous and pelagic sediments from the Galapagos mounds area, DSDP Leg 70. Chemical Geology, 36(3-4), 275-298, https://doi.org/10.1016/0009-2541(82)90052-3
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Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 0.591650 * Median Longitude: -86.099100 * South-bound Latitude: 0.566700 * West-bound Longitude: -86.132200 * North-bound Latitude: 0.610200 * East-bound Longitude: -86.090000
Date/Time Start: 1979-11-15T00:00:00 * Date/Time End: 1979-11-27T00:00:00
Minimum DEPTH, sediment/rock: 0.22 m * Maximum DEPTH, sediment/rock: 28.77 m
Event(s):
70-506 * Latitude: 0.609800 * Longitude: -86.099800 * Date/Time: 1979-11-15T00:00:00 * Elevation: -2710.0 m * Penetration: 36.7 m * Recovery: 22.7 m * Location: North Pacific/MOUND * Campaign: Leg70 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 7 cores; 27.9 m cored; 8.8 m drilled; 81.5 % recovery
70-506B * Latitude: 0.610200 * Longitude: -86.091300 * Date/Time: 1979-11-15T00:00:00 * Elevation: -2711.0 m * Penetration: 20.7 m * Recovery: 20.2 m * Location: North Pacific/MOUND * Campaign: Leg70 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 6 cores; 20.7 m cored; 0 m drilled; 97.6 % recovery
70-506C * Latitude: 0.607700 * Longitude: -86.091300 * Date/Time: 1979-11-15T00:00:00 * Elevation: -2710.0 m * Penetration: 31.3 m * Recovery: 29.7 m * Location: North Pacific/MOUND * Campaign: Leg70 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 8 cores; 31.3 m cored; 0 m drilled; 95 % recovery
Comment:
Pb was extracted from whole-rock powder splits by dissolution followed by electrodeposition technique of Arden & Gale (1974), doi:10.1021/ac60337a037. Cathodic electrodeposition was carried out twice prior to anodic electrodeposition in order to ensure removal of all Fe prior to analysis. Samples were mounted on a single Fe filament using silica gel-phosphoric acid activator and the analyses were made on the Oxford 12-in. solid source mass spectrometer designed by Dr. N.H.Gale. Pb-isotope data have been corrected for mass fractionation by comparison with results on standard NBS 981. Typical errors on Pb-isotopic ratios are 0.1-0.15% (2 sigma). Sr was extracted from powder splits by standard ion-exchange methods (O'Nions, Pankhurst, 1973; doi:10.1016/0009-2541(73)90110-1), and analysed on a V.G. MM-30 mass spectrometer at Oxford. 87Sr/86Sr ratios have been normalised to a value of 0.70800 for the Eimer and Amend Sr standard. Typical errors on 87Sr/86Sr measurements are 0.01%.
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 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 6 | Sample code/label | Sample label | Barrett, T J | DSDP/ODP/IODP sample designation | ||
| 7 | Lithology/composition/facies | Lithology | Barrett, T J | |||
| 8 | Lead-206/Lead-204 ratio | 206Pb/204Pb | Barrett, T J | |||
| 9 | Lead-207/Lead-204 ratio | 207Pb/204Pb | Barrett, T J | |||
| 10 | Lead-208/Lead-204 ratio | 208Pb/204Pb | Barrett, T J | |||
| 11 | Strontium-87/Strontium-86 ratio | 87Sr/86Sr | Barrett, T J | |||
| 12 | Strontium-87/Strontium-86 ratio, error | 87Sr/86Sr e | ± | Barrett, T J |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
120 data points
Data
| 1 Event | 2 Latitude | 3 Longitude | 4 Elevation [m] | 5 Depth sed [m] | 6 Sample label | 7 Lithology | 8 206Pb/204Pb | 9 207Pb/204Pb | 10 208Pb/204Pb | 11 87Sr/86Sr | 12 87Sr/86Sr e [±] |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 70-506 | 0.6098 | -86.0998 | -2710 | 3.70 | 506-2-2, 69-71 | granular nontronite | 18.405 | 15.597 | 38.030 | 0.70891 | 0.00004 |
| 70-506 | 0.6098 | -86.0998 | -2710 | 6.36 | 506-3-1, 45-47 | granular nontronite | 17.836 | 15.532 | 37.569 | ||
| 70-506 | 0.6098 | -86.0998 | -2710 | 12.26 | 506-4-2, 45-47 | granular nontronite | 18.545 | 15.606 | 38.211 | ||
| 70-506 | 0.6098 | -86.0998 | -2710 | 21.86 | 506-6-2, 125-127 | granular nontronite | 18.244 | 15.569 | 38.039 | ||
| 70-506 | 0.6098 | -86.0998 | -2710 | 22.50 | 506-6-3, 39-41 | foraminifer nanno-fossil ooze | 18.659 | 15.608 | 38.455 | ||
| 70-506 | 0.6098 | -86.0998 | -2710 | 28.77 | 506-8-1, 86-88 | foraminifer nanno-fossil ooze | 18.663 | 15.579 | 38.427 | 0.70909 | 0.00005 |
| 70-506B | 0.6102 | -86.0913 | -2711 | 0.22 | 506B-1-1, 21-23 | diatomaceous nannofossil ooze | 18.539 | 15.606 | 38.356 | ||
| 70-506B | 0.6102 | -86.0913 | -2711 | 4.63 | 506B-2-3, 12-14 | foraminifer diatom nannofossil ooze | 18.700 | 15.595 | 38.522 | ||
| 70-506B | 0.6102 | -86.0913 | -2711 | 15.65 | 506B-5-1, 94-96 | foraminifer nannofossil ooze | 18.706 | 15.623 | 38.406 | ||
| 70-506C | 0.6077 | -86.0913 | -2710 | 4.18 | 506C-2-1, 67-69 | Mn-oxide crust | 18.273 | 15.545 | 37.984 | ||
| 70-506C | 0.6077 | -86.0913 | -2710 | 15.71 | 506C-4-3, 40-42 | compact nontronite | 18.731 | 15.607 | 38.516 | ||
| 70-507D | 0.5667 | -86.0900 | -2689 | 1.53 | 507D-2-1, 52-54 | granular nontronite | 18.791 | 15.584 | 38.453 | ||
| 70-507D | 0.5667 | -86.0900 | -2689 | 1.53 | 507D-2-1, 52-54 (duplicate) | granular nontronite | 18.776 | 15.576 | 38.416 | ||
| 70-507F | 0.5667 | -86.0900 | -2695 | 3.97 | 507F-2-2, 6-8 | granular nontronite | 19.563 | 15.752 | 38.917 | ||
| 70-507F | 0.5667 | -86.0900 | -2695 | 25.18 | 507F-7-1, 77-79 | foraminifer nannofossil ooze | 18.647 | 15.573 | 38.420 | ||
| 70-509B | 0.5888 | -86.1322 | -2687 | 2.38 | 509B-1-2, 85-90 | Mn-oxide crust | 18.564 | 15.620 | 38.310 | 0.70908 | 0.00006 |
| 70-509B | 0.5888 | -86.1322 | -2687 | 2.84 | 509B-1-2, 133-135 | granular nontronite | 18.540 | 15.598 | 38.223 | ||
| 70-509B | 0.5888 | -86.1322 | -2687 | 3.46 | 509B-2-1, 44-48 | granular nontronite | 19.358 | 15.699 | 38.722 | 0.70909 | 0.00004 |
| 70-509B | 0.5888 | -86.1322 | -2687 | 3.46 | 509B-2-1, 44-48 (duplicate) | granular nontronite | 19.376 | 15.691 | 38.718 | ||
| 70-509B | 0.5888 | -86.1322 | -2687 | 4.16 | 509B-2-1, 114-118 | Mn- Fe-oxide mud | 18.790 | 15.633 | 38.651 | 0.70896 | 0.00007 |
| 70-509B | 0.5888 | -86.1322 | -2687 | 8.41 | 509B-3-1, 100-102 | granular nontronite | 18.536 | 15.584 | 38.173 | ||
| 70-509B | 0.5888 | -86.1322 | -2687 | 15.18 | 509B-4-3, 37-39 | granular nontronite | 18.124 | 15.570 | 37.920 |