Unknown
PANGAEA
In:
Supplement to: Shanks, Wayne C; Niemitz, Jeffrey W (1982): Sulfur isotope studies of hydrothermal anhydrite and pyrite, Deep Sea Drilling Project Leg 64, Guaymas Basin, Gulf of California. In: Curray, JR; Moore, DG; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 64, 1137-1142, https://doi.org/10.2973/dsdp.proc.64.153.1982
Publication Date:
2023-06-27
Description:
Hydrothermal pyrite samples from Holes 477, 477A, and 478 have sulfur isotope values ranging from about 10 to 11 per mil. Samples with negative sulfur isotope values generally have low sulfide sulfur contents and reflect mixed bacterial and hydrothermal sulfur sources. At higher sulfur contents, the hydrothermal component predominates, producing positive isotope values. Hydrothermal sulfide derives from reduction of seawater sulfate and may contain a significant basaltic component. Hydrothermal anhydrite is restricted to a narrow zone beneath a dolerite sill at Site 477 and, because of partial sulfate reduction in the circulating waters, has isotopic values (23.5-25 per mil), heavier than seawater.
Keywords:
64-477; 64-477A; 64-478; Comment; Deep Sea Drilling Project; Description; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Elevation of event; Event label; Glomar Challenger; Gravimetric analysis; Iron monosulfide; Latitude of event; Leg64; Longitude of event; Mass spectrometer Varian MAT 250; North Pacific/Gulf of California/BASIN; North Pacific/Gulf of California/CHANNEL; Sample code/label; Sulfur of anhydrite; Sulfur of pyrite; δ34S, anhydrite; δ34S, pyrite
Type:
Dataset
Format:
text/tab-separated-values, 89 data points
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