COMPOSITIONS OF TECTONIC MELANGE IN WUNUER AREA, DAXINGANLING MOUNTAINS: Geological Implication
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摘要:
乌奴耳构造混杂岩由不同性质的岩块和基质组成, 属泥沙质构造混杂岩. 岩块可分为内部岩块和外部岩块两种类型. 岩块大小不一, 成分和形态各异, 在混杂岩中分布无序. 基质为片理化泥质岩或千枚状板岩, 剪切变形强烈, 面理产状紊乱, 绕岩块分布. 综合研究表明, 乌奴耳构造混杂岩明显区别于沉积成因的滑塌堆积, 是典型的泥沙质构造混杂岩, 是新林-喜桂图缝合带的重要组成部分.
Abstract:The Wunuer tectonic melange is composed of rock blocks and matrixes with different properties, belonging to sandy tectonic melange. The blocks can be sorted into local blocks and exotic blocks, which are various in size, composition and shape, disorderly distributed in the melange. The matrix is foliated argillaceous rock or phyllite slate, with intense shear deformation and disordered schistosity, distributed around the blocks. The comprehensive study shows that the Wunuer tectonic melange, obviously different from the slump deposit of sedimentary origin, is a typical sandy tectonic melange, serving as an important part of Xinlin-Xiguitu suture zone.
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