A review of microbial‐environmental interactions recorded in Proterozoic carbonate‐hosted chert
Name
Geobiology - 2022 - Moore - A review of microbial‐environmental interactions recorded in Proterozoic carbonate‐hosted chert.pdf
Description
Published version
Size
15.92 MB
Format
Adobe PDF
Checksum (MD5)
1282d5209eb79e0b385e608cdae0df7e
Author(s)
Moore, Kelsey R
Gong, Jian
Williford, Kenneth
Konhauser, Kurt
Bosak, Tanja
DAYE, MIRNA
Date Issued
2022
Journal
Geobiology
Publisher
Wiley
Citation
Moore, Kelsey R, Daye, Mirna, Gong, Jian, Williford, Kenneth, Konhauser, Kurt et al. 2022. "A review of microbial‐environmental interactions recorded in Proterozoic carbonate‐hosted chert." Geobiology, 21 (1).
Version
Final published version
Abstract
The record of life during the Proterozoic is preserved by several different lithologies, but two in particular are linked both spatially and temporally: chert and carbonate. These lithologies capture a snapshot of dominantly peritidal environments during the Proterozoic. Early diagenetic chert preserves some of the most exceptional Proterozoic biosignatures in the form of microbial body fossils and mat textures. This fossiliferous and kerogenous chert formed in shallow marine environments, where chert nodules, layers, and lenses are often surrounded by and encased within carbonate deposits that themselves often contain kerogen and evidence of former microbial mats. Here, we review the record of biosignatures preserved in peritidal Proterozoic chert and chert-hosting carbonate and discuss this record in the context of experimental and environmental studies that have begun to shed light on the roles that microbes and organic compounds may have played in the formation of these deposits. Insights gained from these studies suggest temporal trends in microbial-environmental interactions and place new constraints on past environmental conditions, such as the concentration of silica in Proterozoic seawater, interactions among organic compounds and cations in seawater, and the influence of microbial physiology and biochemistry on selective preservation by silicification.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1111/GBI.12527
