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Detailed Reference Information |
Elderfield, H., Kastner, M. and Martin, J.B. (1990). Compositions and sources of fluids in sediments of the Peru subduction zone. Journal of Geophysical Research 95: doi: 10.1029/89JB03548. issn: 0148-0227. |
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Sediments of the middle-to-lower slope regions of the Peru continental margin drilled during Ocean Drilling Program (ODP) leg 112 contain interstitial waters with chloride concentrations as low as 454 mM Cl-, equivalent to ~20% dilution of seawater with fresh water. Strontium isotope data suggest that two separate fluid regimes are present: a northerly one in which fluids contain more radiogenic Sr than seawater (87Sr/86Sr up to 0.70996), possibly originating from continental crust, and a southerly regime where fluids contain Sr less radiogenic than seawater (87Sr/86Sr down to 0.70722), and which are also enriched in Ca2+ and depleted in Mg2+ and Δ18O, that appear to have interacted with oceanic basement. O, C, and He isotopic data support these interpretations. ¿ American Geophysical Union |
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Abstract |
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Keywords
Oceanography, Biological and Chemical, Geochemistry, Marine Geology and Geophysics, Plate tectonics, Information Related to Geographic Region, Pacific Ocean |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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