Chemistry of interstitial waters of ODP Leg 112 samples, supplement to: Kastner, Miriam; Elderfield, Henry; Martin, Jonathan B; Suess, Erwin; Kvenvolden, Keith A; Garrison, Robert E (1990): Diagenesis and interstitial-water chemistry at the Peruvian continental margin - major constituents and strontium isotopes. In: Suess, E; von Huene, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 112, 413-440

Miriam Kastner, Henry Elderfield, Jonathan B Martin, Erwin Suess, Keith A Kvenvolden & Robert E Garrison
Two distinct hydrogeochemical regimes currently dominate the Peruvian continental margin. One, in shallower water (150-450 m) shelf to upper-slope regions, is characterized by interstitial waters with strong positive chloride gradients with depth. The maximum measured value of 1043 mM chloride at Site 680 at ITS corresponds to a degree of seawater evaporation of ~2 times. Major ion chemistry and strontioum isotopic composition of the interstitial waters suggest that a subsurface brine that has a marine...
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