Bacterial mineralization patterns in basaltic aquifers: Implications for possible life in martian meteorite ALH84001

被引：0
|
作者：
Thomas-Keprta, KL
McKay, DS
Wentworth, SJ
Stevens, TO
Taunton, AE
Allen, CC
Coleman, A
Gibson, EK
Romanek, CS
机构：
[1] Lockheed Martin Space Mission Syst & Serv, Houston, TX 77058 USA
[2] NASA, Lyndon B Johnson Space Ctr, Houston, TX 77058 USA
[3] Pacific NW Lab, Richland, WA 99352 USA
[4] Univ Wisconsin, Dept Geol, Madison, WI 53706 USA
[5] Brown Univ, Biomed Dept, Providence, RI 02912 USA
[6] Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA
来源：
GEOLOGY | 1998年 / 26卷 / 11期
关键词：
D O I：
10.1130/0091-7613(1998)026<1031:BMPIBA>2.3.CO;2
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
To explore the formation and preservation of biogenic features in igneous rocks, we have examined the organisms in experimental basaltic microcosms using scanning and transmission electron microscopy, Four types of microorganisms were recognized on the basis of size, morphology, and chemical composition, Some of the organisms mineralized rapidly, whereas others show no evidence of mineralization. Many mineralized cells are hollow and do not contain evidence of microstructure. Filaments, either attached or no longer attached to organisms, are common. Unattached filaments are mineralized and are most likely bacterial appendages (e,g., prosthecae). Features similar in size and morphology to unattached, mineralized filaments are recognized in martian meteorite ALH84001.
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页码：1031 / 1034
页数：4
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