Barrett, T J; Friedrichsen, Hans (1983): (Table 1) Sulfur isotopes, total sulfur, and degree of oxidation of basalt samples from DSDP Holes 69-504B and 70-504B [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.816536, Supplement to: Barrett, TJ; Friedrichsen, H (1983): Oxygen- and hydrogen-isotope composition of some basalts from Deep Sea Drilling Project Hole 504B, Costa Rica Rift, Legs 69 and 70. 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, 637-642, https://doi.org/10.2973/dsdp.proc.69.137.1983
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Abstract:
Whole-rock basalt samples from the upper half of Deep Sea Drilling Project Hole 504B have oxygen-isotope compositions typical of mid-ocean-ridge basalts which have experienced a moderate degree of low-temperature alteration by sea water. By contrast, d18O values in the lower half of the hole correspond to basalts which have experienced almost no detectable oxygen-isotope alteration. These observations suggest that the overall water/rock ratio was lower in the lower half of the drilled crust. A correlation between d18O values and 87Sr/86Sr ratios suggests that the water/rock ratio, rather than temperature variation, was the main factor determining basalt d18O values. Hydrogen-isotope data appear to be consistent with a low water/rock ratio in the lower part of the crust.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 1.227100 * Median Longitude: -83.730100 * South-bound Latitude: 1.227000 * West-bound Longitude: -83.730200 * North-bound Latitude: 1.227200 * East-bound Longitude: -83.730000
Date/Time Start: 1979-10-07T00:00:00 * Date/Time End: 1979-12-04T00:00:00
Minimum Elevation: -3460.0 m * Maximum Elevation: -3460.0 m
Event(s):
69-504B * Latitude: 1.227200 * Longitude: -83.730200 * Date/Time: 1979-10-07T00:00:00 * Elevation: -3460.0 m * Penetration: 489 m * Recovery: 262 m * Campaign: Leg69 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL)
70-504B * Latitude: 1.227000 * Longitude: -83.730000 * Date/Time: 1979-12-04T00:00:00 * Elevation: -3460.0 m * Penetration: 836.1 m * Recovery: 91.6 m * Campaign: Leg70 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 40 cores; 328.6 m cored; 18.5 m drilled; 27.9 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Sample code/label | Sample label | Barrett, T J | DSDP/ODP/IODP sample designation | ||
| 3 | Sample ID | Sample ID | Barrett, T J | |||
| 4 | Piece | Piece | Barrett, T J | |||
| 5 | Lithology/composition/facies | Lithology | Barrett, T J | |||
| 6 | Alteration | Alteration | Barrett, T J | #1 | ||
| 7 | Alteration | Alteration | Barrett, T J | #2 | ||
| 8 | Alteration | Alteration | Barrett, T J | #3 | ||
| 9 | δ18O | δ18O | ‰ | Barrett, T J | Mass spectrometry | SMOW |
| 10 | δ Deuterium | δD | ‰ SMOW | Barrett, T J | Mass spectrometry |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
122 data points
Data
| 1 Event | 2 Sample label (DSDP/ODP/IODP sample designation) | 3 Sample ID | 4 Piece | 5 Lithology | 6 Alteration (#1) | 7 Alteration (#2) | 8 Alteration (#3) | 9 δ18O [‰] (SMOW, Mass spectrometry) | 10 δD [‰ SMOW] (Mass spectrometry) |
|---|---|---|---|---|---|---|---|---|---|
| 69-504B | 69-504B-3-1,102-105 | 1 | 253 | Fine-grained aphyric basalt; pillow or thin flow (80 cm thick); sample from middle | Colorless to green smectites occurring as alteration products of olivine and glass, and as vesicle fillings | Reddish-brown alteration minerals indicative of relatively oxidizing conditions (hematite, Fe-hydroxide, iddingsite), occurring as alteration products of olivine and glass, and as vesicle fillings | 7.4 | -108 | |
| 69-504B | 69-504B-8-3,75-80 | 2 | 540 | Medium-grained, subaphyric basalt; massive flow (at least 1.5 m thick); sample from middle | Colorless to green smectites occurring as alteration products of olivine and glass, and as vesicle fillings | 7.0 | -107 | ||
| 69-504B | 69-504B-13-2,86-89 | 3 | 779 | Fine-grained aphyric basalt; pillow or thin flow; sample from middle | Colorless to green smectites occurring as alteration products of olivine and glass, and as vesicle fillings | Reddish-brown alteration minerals indicative of relatively oxidizing conditions (hematite, Fe-hydroxide, iddingsite), occurring as alteration products of olivine and glass, and as vesicle fillings | 7.7 | -112 | |
| 69-504B | 69-504B-19-2,82-85 | 4 | 1145 | Fine-grained moderately Pl-Ol-Cpx-phyric basalt; pillow; sample from middle | Colorless to green smectites occurring as alteration products of olivine and glass, and as vesicle fillings | 6.6 | -101 | ||
| 69-504B | 69-504B-25-2,97-101 | 5 | 1434 | Fine-grained aphyric basalt; pillow or thin flow (55 cm thick); sample from middle | Colorless to green smectites occurring as alteration products of olivine and glass, and as vesicle fillings | 6.6 | -101 | ||
| 69-504B | 69-504B-29-1,50-52 | 6 | 1569 | Fine-grained aphyric basalt; probably pillow material | Colorless to green smectites occurring as alteration products of olivine and glass, and as vesicle fillings | 6.9 | -108 | ||
| 70-504B | 70-504B-33-1,28-30 | 7 | 184 | Medium-grained highly Ol-Pl phyric basalt; massive unit (about 3 m thick); sample from about 70 cm below top | Colorless to green smectites occurring as alteration products of olivine and glass, and as vesicle fillings | Reddish-brown alteration minerals indicative of relatively oxidizing conditions (hematite, Fe-hydroxide, iddingsite), occurring as alteration products of olivine and glass, and as vesicle fillings | 6.8 | -97 | |
| 70-504B | 70-504B-34-2,32-37 | 8 | 242 | Fine-grained moderately Pl-Ol-phyric basalt; pillow; sample from margin | Colorless to green smectites occurring as alteration products of olivine and glass, and as vesicle fillings | Reddish-brown alteration minerals indicative of relatively oxidizing conditions (hematite, Fe-hydroxide, iddingsite), occurring as alteration products of olivine and glass, and as vesicle fillings | 7.4 | -103 | |
| 70-504B | 70-504B-36-2,44-46 | 9 | 307 | Medium-grained moderately Pl-phyric basalt; massive unit about 6 m thick); sample from about 2 m below top | Colorless to green smectites occurring as alteration products of olivine and glass, and as vesicle fillings | Pyrite, suggestive of relatively reducing conditions | Where pyrite is indicated, it is not present in the sample, but in veins within 30 cm above or below it | 6.3 | |
| 70-504B | 70-504B-38-1,90-92 | 10 | 420 | Medium-grained moderately Ol-Pl-Cpx-phyric basalt; pillow interior | Colorless to green smectites occurring as alteration products of olivine and glass, and as vesicle fillings | Reddish-brown alteration minerals indicative of relatively oxidizing conditions (hematite, Fe-hydroxide, iddingsite), occurring as alteration products of olivine and glass, and as vesicle fillings | pyrite, suggestive of relatively reducing conditions | 6.2 | -111 |
| 70-504B | 70-504B-41-2,17-19 | 11 | 599 | Medium-grained moderately Pl-Ol-phyric basalt; massive flow (about 14 m thick); sample from margin | Colorless to green smectites occurring as alteration products of olivine and glass, and as vesicle fillings | 6.4 | -87 | ||
| 70-504B | 70-504B-46-1,112-116 | 12 | 778 | Fine-grained sparsely Plphyric basalt; pillow; sample from margin | Colorless to green smectites occurring as alteration products of olivine and glass, and as vesicle fillings | 6.2 | |||
| 70-504B | 70-504B-52-3,62-65 | 13 | 1030 | Medium-grained sparsely Ol-Pl-phyric basalt; massive unit (at least 4 m thick); sample from middle | Colorless to green smectites occurring as alteration products of olivine and glass, and as vesicle fillings | Pyrite, suggestive of relatively reducing conditions | where pyrite is indicated, it is not present in the sample, but in veins within 30 cm above or below it | 6.0 | -84 |
| 70-504B | 70-504B-57-1,83-88 | 14 | 1139 | Fine-grained moderately Pl-Ol-phyric basalt; pillow; sample from margin | Colorless to green smectites occurring as alteration products of olivine and glass, and as vesicle fillings | 6.1 | -86 | ||
| 70-504B | 70-504B-64-2,125-130 | 16 | 1436 | Medium-grained aphyric basalt; massive flow (about 1.5 m thick); sample from lower portion | Colorless to green smectites occurring as alteration products of olivine and glass, and as vesicle fillings | Pyrite, suggestive of relatively reducing conditions | where pyrite is indicated, it is not present in the sample, but in veins within 30 cm above or below it | 6.0 | -116 |
| 70-504B | 70-504B-70-2,3-7 | 17 | 1563 | Coarse-grained ophitic basalt; massive flow (or sill) of unknown thickness; sample from about 25 cm below top | Colorless to green smectites occurring as alteration products of olivine and glass, and as vesicle fillings | 5.8 | -89 |