Andrews, Anthony J (1979): The distribution of sulfur in oceanic crust with respect to oxidative diagenesis (Table 1) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.710856, Supplement to: Andrews, AJ (1979): On the effect of low-temperature seawater-basalt interaction on the distribution of sulfur in oceanic crust, layer 2. Earth and Planetary Science Letters, 46(1), 68-80, https://doi.org/10.1016/0012-821X(79)90066-9
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Abstract:
A detailed geochemical-petrological examination of layer 2 basalts recovered during Leg 37 of the DSDP has revealed that the original distribution, form and abundance of igneous sulfide have been profoundly altered during low-grade oxidative diagenesis. The net result appears to have been a rather pervasive remobilization of igneous sulfide to form secondary pyrite accompanied by a bulk loss of sulfur equivalent to about 50-60% of the original igneous value, assuming initial saturation. It is suggested that during infiltration of seawater into the massive crystalline rock, igneous sulfide has experienced pervasive oxidation, under conditions of limited oxidation potential, to form a series of unstable, soluble sulfur species, primarily in the form of SO3[2-] and S2O3[2-]. Spontaneous decomposition of these intermediate compounds through disproportionation has resulted in partial reconstitution of the sulfur as secondary pyrite and the generation of SO4[2-] ion, which, due to its kinetic stability, has been lost from the basalt system and ultimately transferred to the ocean. This model not only satisfies the geochemical and petrological observations but also provides a suitable explanation for the highly variable delta34S values which characterize secondary sulfides in deep ocean floor basalts.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 36.973475 * Median Longitude: -34.037050 * South-bound Latitude: 36.840800 * West-bound Longitude: -35.198700 * North-bound Latitude: 37.295700 * East-bound Longitude: -33.641000
Date/Time Start: 1974-06-17T00:00:00 * Date/Time End: 1974-07-18T00:00:00
Minimum ORDINAL NUMBER: 1 * Maximum ORDINAL NUMBER: 8
Event(s):
37-332A * Latitude: 36.878700 * Longitude: -33.641000 * Date/Time: 1974-06-17T00:00:00 * Elevation: -1818.0 m * Penetration: 434.5 m * Recovery: 66.2 m * Location: North Atlantic/VALLEY * Campaign: Leg37 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 39 cores; 370.5 m cored; 0 m drilled; 17.9 % recovery
37-332B * Latitude: 36.878700 * Longitude: -33.641000 * Date/Time: 1974-06-17T00:00:00 * Elevation: -1806.0 m * Penetration: 721.5 m * Recovery: 122.9 m * Location: North Atlantic/VALLEY * Campaign: Leg37 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 48 cores; 582.5 m cored; 0 m drilled; 19.4 % recovery
37-333A * Latitude: 36.840800 * Longitude: -33.667500 * Date/Time: 1974-07-06T00:00:00 * Elevation: -1666.0 m * Penetration: 529 m * Recovery: 25.2 m * Location: North Atlantic/VALLEY * Campaign: Leg37 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 11 cores; 312 m cored; 0 m drilled; 8.1 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | ORDINAL NUMBER | Ord No | Geocode | |||
| 3 | Sample code/label | Sample label | Andrews, Anthony J | DSDP/ODP/IODP sample designation | ||
| 4 | Sample code/label 2 | Sample label 2 | Andrews, Anthony J | |||
| 5 | Lithology/composition/facies | Lithology | Andrews, Anthony J | |||
| 6 | Color description | Color desc | Andrews, Anthony J | |||
| 7 | Mineral assemblage | Min assembl | Andrews, Anthony J | alteration mineralogy | ||
| 8 | Iron number | Fe/(Fe+Mg) | Andrews, Anthony J | |||
| 9 | Sulfur, total | TS | mg/kg | Andrews, Anthony J |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
96 data points