| 陕西陇县深变质岩区两类韧性剪切带的确定及地质意义 |
| |
| 引用本文： | 校培喜,赵平甲,王洪亮.陕西陇县深变质岩区两类韧性剪切带的确定及地质意义[J].陕西地质,1996(2). |
| |
| 作者姓名： | 校培喜 赵平甲 王洪亮 |
| |
| 作者单位： | 陕西地质矿产勘查开发局区域地质矿产研究院!咸阳市滨河路7号，712000 |
| |
| 摘 要： | 依据糜棱面理产状、剪切褶皱（鞘褶皱）形态、拉伸线理空间位志、构造岩及剪切变质作用等特征的对比研究，确定陇县深变质岩区存在两种不同类型的韧性剪切带，即韧性推覆剪切带和韧性平移剪切带。结合区域地质构造的研究，认为韧性推覆剪切带形成于加里东晚期，与这一时期碰撞造山作用有关，而韧性平移剪切带则是印支期造山带内右行走滑作用的结果。
|
| 关 键 词： | 韧性推覆剪切带 韧性平移剪切带 应变分析 深变质岩区 陇县 |
IDENTIFICATION OF TWO DIFFERENT KINDS OF DUCTILE-SHEAR ZONES IN INTENSELY METAMORPHOZED REGION IN LONGXIAN COUNTY, SHAANXI,AND THE GEOLOGICAL SIGNIFICANCE |
| |
| Xiao Peixi, Zhao Pingjia and Wang Hongliang.IDENTIFICATION OF TWO DIFFERENT KINDS OF DUCTILE-SHEAR ZONES IN INTENSELY METAMORPHOZED REGION IN LONGXIAN COUNTY, SHAANXI,AND THE GEOLOGICAL SIGNIFICANCE[J].Geology of Shaanxi,1996(2). |
| |
| Authors: | Xiao Peixi Zhao Pingjia and Wang Hongliang |
| |
| Abstract: | Correlation and study of the characteristics of mylonitic-planar joint attitudes, shapesof shear fold (sheath folds), spacial distributions of tensile lineation, tectonic rocks andshearing metamorphism suggest that there are two different types of ductile-shear zones inthe intensely metamorphozed rock region, i. e., ductile - napped shear zone. and ductilestrike - slip shear zone. Regional geology and structures also indicate that the ductile -napped shear zone was formed in the late of the Caledonian age, which is related to contemporaneous collision orogeny. The ductile strike-slip shear zone was formed by right-strikeslipping of the Indosinian intra -orogeny. |
| |
| Keywords: | Ductile-napped shear zone Ductile strike-slip shear zone Stress analysis Intensely metamorphozed rock region Longxian |
| 本文献已被 CNKI 等数据库收录！ |
