Analysis of the natural remanent magnetization of rocks by measuring the efficiency ratio through alternating field demagnetization spectra

被引：5

作者：

Kohout, T. ^{[1
,2
,3
]}

Kletetschka, G. ^{[3
,4
,5
]}

Donadini, F. ^{[1
,2
,6
]}

Fuller, M. ^{[7
]}

Herrero-Bervera, E. ^{[7
]}

机构：

[1] Univ Helsinki, Dept Phys, Helsinki, Finland

[2] Charles Univ Prague, Dept Appl Geophys, Prague 12843 2, Czech Republic

[3] Acad Sci Czech Republic, Inst Geol, Prague 16500 6, Czech Republic

[4] Catholic Univ Amer, Dept Phys, Washington, DC 20064 USA

[5] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[6] Univ Calif San Diego, Scripps Inst Oceanog, San Diego, CA 92103 USA

[7] Univ Hawaii Manoa, HIGP SOEST, Honolulu, HI 96822 USA

来源：

STUDIA GEOPHYSICA ET GEODAETICA | 2008年 / 52卷 / 02期

关键词：

REM; efficiency of magnetization; coercivity; shock remanence; SRM;

D O I：

10.1007/s11200-008-0015-1

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The REM(AF) method is a new tool for the analysis of the origin and alternating field demagnetization coercivity spectra of the remanent magnetization. We applied this method on precambrian Gila diabase sheets from Arizona in order to identify the high coercivity magnetic carrier, and on artificially shocked Rowley Regis basalt from UK in order to analyze the effect of the shock on the natural remanent magnetization. In the Gila diabase the high coercivity magnetic component was identified to be most likely represented by the acicular magnetite (increase in the efficiency ratio in the high coercivity region). In the Rowley Regis basalt, the REM(AF) analysis revealed that comparing to NRM, the shock produced a different distribution of the AF demagnetization coercivity spectra due to the occurrence of the Shock Remanent Magnetization.

引用

页码：225 / 235

页数：11

共 19 条

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[2] NRM-IRM(S) DEMAGNETIZATION PLOTS OF INTRUSIVE ROCKS AND THE ORIGIN OF THEIR NRM [J].