Unknown
PANGAEA
In:
Supplement to: McDuff, Russell E (1984): The chemistry of interstitial waters from the upper ocean crust, Site 395, Deep Sea Drilling Project Leg 78B. In: Hyndman, RD; Salisbury, MH; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 78B, 795-799, https://doi.org/10.2973/dsdp.proc.78b.114.1984
Publication Date:
2023-05-12
Description:
Chemical analysis of fluids sampled in situ during Leg 78B has been carried out. The fluids found in Hole 395A upon reoccupation of the site after a five-year hiatus were identical in composition to local bottom seawater to depths of at least 400 meters, suggesting drawdown. No local bottom-water component is present at 543 meters however. The chemistry of this deep sample shows a large depletion in magnesium, with charge balance maintained by sodium, rather than calcium, enrichment. Calcium is lost through calcite precipitation. A sediment interstitial-water sample from the offset Hole 395B has a chemical signature indicative of glacial influence, thereby constraining drawdown through the sediments to a velocity less than 0.5 cm/y.
Keywords:
Deep Sea Drilling Project; DSDP
Type:
Dataset
Format:
application/zip, 2 datasets
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