| 磁组构与花岗岩基的形变 |
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| 引用本文： | 秦元季. 磁组构与花岗岩基的形变[J]. 中国石油大学学报(自然科学版), 1995, 0(Z1) |
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| 作者姓名： | 秦元季 |
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| 作者单位： | 石油大学地球科学系 |
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| 摘 要： | 用花岗岩基的磁组构特征研究了滇西临沧岩石的形变特征，研究表明，临沧花岗岩基从西向东由磁化率各向同性向各向异性过渡，且各向异性度逐渐增大，磁组构的ａ轴和ａｂ面走向从西向东由近东西向逐渐转变为近南北向。磁组构具有研究花岗岩构造的可行性，可以反映花岗岩基整体构造的形变特征，由此揭示了岩基中西部弱变形的东西向构造与东部边界强变形剪切带的近南北向构造。
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| 关 键 词： | 磁组构；磁化率；各向异性；花岩岩基；形变；临沧 |
ANALYSIS ON THE DEFORMATION OF GRANITOID BATHOLITH WITH MAGNETIC FABRICS METHOD |
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| Qin Yuanji. ANALYSIS ON THE DEFORMATION OF GRANITOID BATHOLITH WITH MAGNETIC FABRICS METHOD[J]. Journal of China University of Petroleum (Edition of Natural Sciences), 1995, 0(Z1) |
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| Authors: | Qin Yuanji |
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| Abstract: | The paper analyzes the structures of the granitoid batholith by using magnetic fabrics method.The different structures caused from various intensity of polyphased deformations can be deciphered.For example,the early Ew trended optimum magnetization plane,which is consistent with the maximum strain plane of mineral infinite ellipsoid gradually transformed into N-S orientation when it approaches the eastern boundary shear zones. Tectonic contact between batholith and country rocks is bounded by the eastwards thrust faults in the western boundary of the batholith and shear zones in the eastern boundary.The dextral shear zones developed in the eastern boundary are formed later than that of thrust deformation. |
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| Keywords: | Magnetic fabric Magnetic susceptibility Anisotropy Granite Deformation Linchang area. |
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