The geochemistry of germanium in deep-sea cherts

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doi: 10.1016/0016-7037(88)90135-4
Author(s): Kolodny, Yehoshua; Halicz, Ludwik
Author Affiliation(s): Primary:
Heb. Univ. Jerusalem, Dep. Geol., Jerusalem, Israel
Geol. Surv. Isr., Israel
Volume Title: Geochimica et Cosmochimica Acta
Source: Geochimica et Cosmochimica Acta, 52(9), p.2333-2336. Publisher: Pergamon, Oxford, International. ISSN: 0016-7037 CODEN: GCACAK
Note: In English. 21 refs.; illus. incl. 2 tables
Summary: Twenty-four samples of cherts and porcellanites from DSDP Legs 6-20 were analysed for germanium and silicon with the object of tracing changes in Ge/Si ratios in past oceans. The Sr isotopes were measured on marine carbonates as they probably reflect a balance between different fluxes through the ocean. Ge concentrations range from 0.87 ppm in the oldest samples (late Jurassic) to 0.23 ppm in the youngest (late Eocene). The decrease in Ge/Si is correlated with the 87Sr/86Sr ratio in sea-water of the relevant age. The results are interpreted in terms of hydrothermal and riverine inputs, diagenetic trends in siliceous sediments and other factors.
Year of Publication: 1988
Research Program: DSDP Deep Sea Drilling Project
Key Words: 02 Geochemistry; 06 Petrology, Sedimentary; Central Pacific; Chemically precipitated rocks; Chert; DSDP Site 167; Deep Sea Drilling Project; Deep-sea environment; Geochemistry; Germanium; Leg 17; Marine environment; Metals; Pacific Ocean; Precipitation; Sedimentary rocks; Sedimentation; Solution
Coordinates: N070406 N070406 W1764930 W1764930
Record ID: 1988074118
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom