Dual role of seawater and hydrothermal fluids in Early Archean chert formation: Evidence from silicon isotopes

S.H.J.M. Van den Boorn; M.J. van Bergen; W. Nijman; P.Z. Vroon

doi:10.1130/G24096A.1

Dual role of seawater and hydrothermal fluids in Early Archean chert formation: Evidence from silicon isotopes

S.H.J.M. Van den Boorn, M.J. van Bergen, W. Nijman, P.Z. Vroon

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

The great variety and abundance of chert deposits in Archean terrains constitute one of the most unusual features that mark Earth's early geological history. Proposed explanations for their origin largely relying on field observations, trace element patterns, or oxygen isotope signatures have not yielded an encompassing model. Here we document silicon isotope systematics in cherts from 3.5-3.0 Ga units in the Pilbara Craton (Western Australia) as evidence of their formation by several distinct processes in Early Archean near-surface environments. Our δ

Original language	English
Pages (from-to)	939-942
Journal	Geology
Volume	35
DOIs	https://doi.org/10.1130/G24096A.1
Publication status	Published - 2007

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AU - Vroon, P.Z.

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ER -

Dual role of seawater and hydrothermal fluids in Early Archean chert formation: Evidence from silicon isotopes

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