Linked Life Data

10489362

Source:http://linkedlifedata.com/resource/pubmed/id/10489362

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5435
pubmed:dateCreated
1999-10-7
pubmed:abstractText
The (56)Fe/(54)Fe of Fe-bearing phases precipitated in sedimentary environments varies by 2.5 per mil (delta(56)Fe values of +0.9 to -1. 6 per mil). In contrast, the (56)Fe/(54)Fe of Fe-bearing phases in igneous rocks from Earth and the moon does not vary measurably (delta(56)Fe = 0.0 +/- 0.3 per mil). Experiments with dissimilatory Fe-reducing bacteria of the genus Shewanella algae grown on a ferrihydrite substrate indicate that the delta(56)Fe of ferrous Fe in solution is isotopically lighter than the ferrihydrite substrate by 1.3 per mil. Therefore, the range in delta(56)Fe values of sedimentary rocks may reflect biogenic fractionation, and the isotopic composition of Fe may be used to trace the distribution of microorganisms in modern and ancient Earth.
pubmed:keyword
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0036-8075
pubmed:author
pubmed:issnType
Print
pubmed:day
17
pubmed:volume
285
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1889-92
pubmed:dateRevised
2007-3-19
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
Iron isotope biosignatures.
pubmed:affiliation
Department of Geology and Geophysics, University of Wisconsin-Madison, 1215 West Dayton Street, Madison, WI 53706, USA. Laboratory, MS 183-301, 4800 Oak Grove Road, Pasadena, CA 91109-8009, USA. beardb@geology.wisc.edu
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S.