鲜水河断裂带区域第四纪构造应力场的分期研究 |
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引用本文: | 谢富仁 祝景忠 等. 鲜水河断裂带区域第四纪构造应力场的分期研究[J]. 地震地质, 1995, 17(1): 35-43 |
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作者姓名: | 谢富仁 祝景忠 等 |
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作者单位: | 国家地震局地壳应力研究所,北京100085 |
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摘 要: | 利用断层滑动方向资料反演构造应力张量的分期计算方法,获得鲜水河断裂带区域第四纪以来两期主要构造应力作用:第1期为早~中更新世,构造应力作用以北东-南西向挤压为特征;第Ⅱ期自晚更新世至今,构造应力作用以近东西向挤压和近南北向拉张为特征
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关 键 词: | 鲜水河断裂 构造应力场 断层滑动 第四纪 |
STUDY OF DIFFERENT-STAGE QUATERNARY TECTONIC STRESS FIELD FOK THE XIANSHUIHE FAULT ZONE |
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Abstract: | By use of fault slip data in invesion of using different-stage tectonic stress tensors,we haveobtained two stages of tectonic Quaternary stress field of the Xianshuihe fault zone. In the firststage(from early-mid Pleistocene ),the tectonic stress field is characteristic of NE-SW compres-sion. In the second phase(from late-Pleistocene to the present),the tectonic stress field is main-ly characteristic of nearly E-W compression and nearly S-N extension. In this stress field,the Xi-anshuihe fault mainly shows a left-lateral slip |
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Keywords: | Xianshuihe fault Tectonic stress field Fault slip Quaternary |
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