| 磁铁矿与黄铁矿双向交代研究及意义 |
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| 引用本文： | 徐和聆,陈克樵.磁铁矿与黄铁矿双向交代研究及意义[J].地质力学学报,2000,6(3):83-89. |
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| 作者姓名： | 徐和聆 陈克樵 |
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| 作者单位： | 1. 中国地质科学院地质力学研究所,北京,100081
2. 中国地质科学院矿床地质研究所,北京,100037 |
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| 基金项目： | 中国科学院资助项目，49972020， |
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| 摘 要： | 在华北盆地南缘早古生代碳酸盐岩中，发现了包括交代假象和交代残余枯内的一系列足以支持磁铁矿与的矿之间发生双向交代作用的确凿矿物学证据，甚至在同一个磁性矿物颗粒内，还辨认出方向完全相反而且是先后发生的２种交代现象。磁铁矿（铁磁性矿物）和黄铁矿（顺磁性矿物）之间有双向交代会直接干扰古地磁数据，并影响以此为基础而开展的地块运动分析和古地理的重建。
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| 关 键 词： | 磁铁矿 黄铁矿 双向交代作用 矿物学 古地磁学 |
| 收稿时间： | 2000/7/5 0:00:00 |
DUAL METASOMATISM BETWEEN MAGNETITE AND PYRITE AND ITS IMPLICATIONS |
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| XU He-ling,CHEN Ke-qiao,MA Xing-hu,SUN Zhi-ming.DUAL METASOMATISM BETWEEN MAGNETITE AND PYRITE AND ITS IMPLICATIONS[J].Journal of Geomechanics,2000,6(3):83-89. |
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| Authors: | XU He-ling CHEN Ke-qiao MA Xing-hu SUN Zhi-ming |
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| Institution: | Institute of Geomechanics, CAGS, Beijing 100081, China,Institute of Mineral Deposits, CAGS, Beijing 100037, China,Institute of Geomechanics, CAGS, Beijing 100081, China and Institute of Geomechanics, CAGS, Beijing 100081, China |
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| Abstract: | There is convincing mineralogical evidence such as metasomatic pseudomorph and replacement remnants to support that dual replacements have taken place in the Early Paleozoic carbonate rocks form southern part of the Huabei basin. Two kinds of replacements that have proceeded in opposite directions in two different periods were found to occur even in the same grain. The dual opposite metasomatism between the ferromagnetic magnetite and the paramagnetic pyrite would produce noise on the palaeomagnetic data to distort the palaeomagnetic results of a given region,if passed unnoticed. |
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| Keywords: | magnetite pyrite dual metasomatism |
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