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《Earth Science Frontiers》 2002-04
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A PRELIMINARY STUDY ON THE RELATIONSHIP BETWEEN ROCK MAGNETIC PROPERTIES AND MINERALIZATION OF LOW TEMPERATURE FLUIDS

DENG Jun 1,2, ZHANG Shi-hong 1,2, SUN Zhong-shi3, WANG Jian-ping1, WANG Qing-fei1 (1.School of the Earth and Land Resources,China University of Geosciences,Beijing 100083,China; 2.Key Laboratory of the Lithospheric Tectonics and Exploration,Minist  
Multidisciplinary studies have demonstrated that low temperature fluids may cause alteration of magnetic minerals and hence are responsible for their remagnetization and susceptibility changes. Rock magnetic and paleomagnetic data can thus provide important information on the timing and nature of fluid event. The authors propose that rock texture plays the most important role for fluid migration and magnetic mineral alteration. Distinguishing the type and the rank of the rock texture will be helpful to understand the mechanism of the fluid-associated remagnetization. Based on the comparison between Au geochemical and rock magnetic data from a mineralized area in northeast China, we suggested that the environmental magnetic field may affect the mineralization process in rock texture. Alternatively, when fluid extracted Au from the host rock, authigenic magnetic minerals formed and their chemical remanent magnetization (CRM) recorded the environmental magnetic field. The CRM is useful to trace the path of fluid migration.
【Fund】: 教育部高等学校骨干教师资助计划项目;; 教育部科学技术研究重点项目 (0 10 3 7);; 国土资源部专项研究计划(2 0 0 10 10 3 );; 国家自然科学基金 (4 0 172 0 3 6);; 国家重点基础研究发展规划项目 (19990 43 2 0 6)
【CateGory Index】: P611
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