| 湘西沅麻盆地古应力史分析 |
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| 引用本文： | 钟建华,易改危!资源堪察与城镇建设系.湘西沅麻盆地古应力史分析[J].湖南科技大学学报(自然科学版),1997(1). |
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| 作者姓名： | 钟建华 易改危!资源堪察与城镇建设系 |
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| 作者单位： | 石油大学!东营，257062 |
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| 摘 要： | 本文主要从镜质体光性异常出发，并结合共轭剪切节理探讨沅麻盆地中、后期的古应力史。通过对沅麻盆地东南缘12个煤矿采集到的煤样进行的镜质体光性异常及其盆地内共轭剪切节理的研究，发现沅麻盆地在其演化过程的中期（K2－E1）遭受了强烈的侧向（NW－SE向）挤压，盆地演化过程中的主体构造（NE－SW向）主要形成于此；晚期E2又遭受了较强烈的纵向（NE－SW向）挤压，使盆地派生出横向引张伸展，产生了一系列NE向小型正断层。
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| 关 键 词： | 沅麻盆地 古应力 镜质体 光性异常 共轭剪切 节理 |
ANALYSIS OF THE PALAEO-STRESS HISTORY OF THE YUANMA BASIN,WESTERN HUNAN:VITRINITE OPTICAL ANOMALY AND CONJUGATE SHEAR JOINT |
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| Zhong Jianhua ,Yi Gaiwei.ANALYSIS OF THE PALAEO-STRESS HISTORY OF THE YUANMA BASIN,WESTERN HUNAN:VITRINITE OPTICAL ANOMALY AND CONJUGATE SHEAR JOINT[J].Journal of Hunan University of Science & Technology(Natural Science Editon),1997(1). |
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| Authors: | Zhong Jianhua Yi Gaiwei |
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| Abstract: | On the basis of the analysis of the vitrinite optical anomal as Well as the conjugate joint, the palaeo-stress history of the Yuanma basin has been studied. The studies indicate that, in the middle stage(K2- E1) of the evolution of the Yuanma basin, it was violently compressed lateraly by form (NW-SE), to form the main structare frame of the basin;and in the late stage (E2), compressed by a longitudinal force, thus producing a series of small NE-SW normal faults.2figs.,1tab.,6refs. |
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| Keywords: | Yuanma basin Palaeo-stress Vitrinite Optical anomaly and conjugate joint |
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