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Multiple Generations of Carbon in the Apex Chert and Implications for Preservation of Microfossils

Olcott-Marshall, Alison
; 
Emry, Julienne R.
; 
Marshall, Craig P.
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Abstract
While the Apex chert is one of the most well-studied Archean deposits on Earth, its formation history is still not fully understood. Here, we present Raman spectroscopic data collected on the carbonaceous material (CM) present within the matrix of the Apex chert. These data, collected within a paragenetic framework, reveal two different phases of CM deposited within separate phases of quartz matrix. These multiple generations of CM illustrate the difficulty of searching for signs of life in these rocks and, by extension, in other Archean sequences.
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This is the publisher's version, also available electronically from "http://online.liebertpub.com".
Date
2012-02-10
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Mary Ann Liebert
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Geology Scholarly Works
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OlcottM_Astrobio_7(2)160.pdf
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Keywords
Apex chert, Carbonaceous material, Raman microspectroscopy, Paragenetic analysis, Archean
Citation
Marshall, A., Emry, J., & Marshall, C. (2012). Multiple Generations of Carbon in the Apex Chert and Implications for Preservation of Microfossils. Astrobiology, 12(2), 160-166, http://www.dx.doi.org/10.1089/ast.2011.0729
URI
https://hdl.handle.net/1808/17072
DOI
10.1089/ast.2011.0729
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