Li-isotope exchange during low-temperature alteration of the upper oceanic crust at DSDP Sites 417 and 418
Geochimica et Cosmochimica Acta（2021）
摘要
•Li-isotopic composition of altered lavas from DSDP Sites 417–418 reported.•Very light (−2‰) upper lavas and heavier (5–10‰) deeper lavas.•Different sedimentation histories of cores affect [Li] but not δ7Li.•Changing hydrological conditions during alteration required to explain data.
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关键词
Li-isotopes,Seawater chemistry,Off-axis hydrothermal systems,Upper ocean crust
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