MAGNETIC-PROPERTIES OF BIOGENIC SOIL GREIGITE (FE3S4)

被引：51

作者：

FASSBINDER, JWE ^{[1
]}

STANJEK, H ^{[1
]}

机构：

[1] TECH UNIV MUNICH,LEHRSTUHL BODENKUNDE,D-85350 FREISING,GERMANY

来源：

GEOPHYSICAL RESEARCH LETTERS | 1994年 / 21卷 / 22期

关键词：

D O I：

10.1029/94GL02506

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Magnetic measurements were performed on soil samples, which contained bacterial greigite. The greigite-containing soil horizon is characterized by SIRM/chi > 70 kA m-1 and by Q-factors >5. Alternating field (AF) demagnetization curves of the NRM gave stable directions. According to IRM acquisition and alternating field demagnetization of the IRM and ARM, the greigite in bulk soil samples shows single domain behaviour. This SD behaviour is also confirmed by hysteresis and by frequency-dependent susceptibility measurements. The thermomagnetic behaviour was checked on extracted greigite. The magnetic parameters of soil greigite are compared with parameters of sedimentary greigite and of bacterial magnetite.

引用

页码：2349 / 2352

页数：4

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