Association of anatase (TiO2) and microbes: Unusual fossilization effect or a potential biosignature?

Mihaela Glamoclija; Andrew Steele; Marc Fries; Juergen Schieber; Mary A. Voytek; Charles S. Cockell

doi:10.1130/2009.2458(42)

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Association of anatase (TiO₂) and microbes: Unusual fossilization effect or a potential biosignature?

Author(s)

Mihaela Glamoclija

Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Road, Washington, DC 20015, USA

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Andrew Steele

Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Road, Washington, DC 20015, USA

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Marc Fries

Planetary Habitability Science Group, Division of Earth and Space Sciences, Jet Propulsion Laboratory, 4800 Oak Grove Drive MS183-301, Pasadena, California 91109, USA

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Juergen Schieber

Department of Geological Sciences, Indiana University, 1001 E 10th St., Bloomington, Indiana 47405, USA

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Mary A. Voytek

U.S. Geological Survey, MS 430, 12201 Sunrise Valley Drive, Reston, Virginia 20192, USA

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Charles S. Cockell

Geomicrobiology Research Group, Centre for Earth, Planetary, Space and Astronomical Research, Open University, Milton Keynes, MK7 6AA, UK

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Doi:

https://doi.org/10.1130/2009.2458(42)

Published:

January 01, 2009

We combined microbial paleontology and molecular biology methods to study the Eyreville B drill core from the 35.3-Ma-old Chesapeake Bay impact structure, Virginia, USA. The investigated sample is a pyrite vein collected from the 1353.81–1353.89 m depth interval, located within a section of biotite granite. The granite is a pre-impact rock that was disrupted by the impact event. A search for inorganic (mineral) biosignatures revealed the presence of micron-size rod morphologies of anatase (TiO₂) embedded in chlorite coatings on pyrite grains.

Neither the Acridine Orange microbial probe nor deoxyribonucleic acid (DNA) extraction followed by polymerase chain reaction (PCR)...

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GSA Special Papers

The ICDP-USGS Deep Drilling Project in the Chesapeake Bay impact structure: Results from the Eyreville Core Holes

Author(s)

Geological Society of America

Volume

458

DOI:

https://doi.org/10.1130/SPE458

Attribution:You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work). Noncommercial - you may not use this work for commercial purpose. No Derivative works - You may not alter, transform, or build upon this work. Sharing - Individual scientists are hereby granted permission, without fees or further requests to GSA, to use a single figure, a single table, and/or a brief paragraph of text in other subsequent works and to make unlimited photocopies of items in this journal for noncommercial use in classrooms to further education and science.

ISBN print:

9780813724584

Publication date:

January 01, 2009

Association of anatase (TiO₂) and microbes: Unusual fossilization effect or a potential biosignature?

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The ICDP-USGS Deep Drilling Project in the Chesapeake Bay impact structure: Results from the Eyreville Core Holes

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Association of anatase (TiO2) and microbes: Unusual fossilization effect or a potential biosignature?

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Contents

The ICDP-USGS Deep Drilling Project in the Chesapeake Bay impact structure: Results from the Eyreville Core Holes

GeoRef

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Association of anatase (TiO₂) and microbes: Unusual fossilization effect or a potential biosignature?