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dc.contributor.authorKnoll, Andrew Herbert
dc.contributor.authorBarghoorn, Elso S.
dc.date.accessioned2009-09-18T14:55:30Z
dc.date.issued1974
dc.identifier.citationKnoll, Andrew H., and Elso S. Barghoorn. 1974. Ambient pyrite in Precambrian chert: New evidence and a theory. Proceedings of the National Academy of Sciences of the United States of America 71, no. 6: 2329-2331.en_US
dc.identifier.issn0027-8424en_US
dc.identifier.issn1091-6490en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:3294653
dc.description.abstractAmbient pyrites of two distinct types were described from middle Precambrian rocks of the Lake Superior area. A new class of this phenomenon is here described from middle Precambrian chert from western Australia. The newly found ambient pyrites are quite minute and characteristically occur in groups forming a "starburst" pattern. All three types of ambient pyrite may be explained in terms of pressure solution initiated by gas evolution from organic material attached to the pyrite. Thermal degradation of the kerogen produces the gases which, due to the impermeability of the encompassing chert, build up the pressures necessary to initiate solution. Pyrite appendages bear a striking resemblance to micro-organisms and, thus, constitute the smallest pseudofossils known.en_US
dc.description.sponsorshipOrganismic and Evolutionary Biologyen_US
dc.language.isoen_USen_US
dc.publisherNational Academy of Sciencesen_US
dc.relation.isversionofhttp://dx.doi.org/10.1073/pnas.71.6.2329en_US
dc.relation.hasversionhttp://www.pnas.org/content/71/6/2329.full.pdf+htmlen_US
dash.licenseLAA
dc.titleAmbient Pyrite in Precambrian Chert: New Evidence and a Theoryen_US
dc.typeJournal Articleen_US
dc.description.versionVersion of Recorden_US
dc.relation.journalProceedings of the National Academy of Sciences of the United States of Americaen_US
dash.depositing.authorKnoll, Andrew Herbert
dc.date.available2014-10-22T07:30:38Z
dc.identifier.doi10.1073/pnas.71.6.2329*
dash.contributor.affiliatedKnoll, Andrew


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