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北秦岭二郎坪岩群与秦岭岩群间构造边界的地质特征
引用本文:李亚林.北秦岭二郎坪岩群与秦岭岩群间构造边界的地质特征[J].陕西地质,1998(2).
作者姓名:李亚林
作者单位:西北大学地质学系!西安,710069
摘    要:二郎坪岩群与秦岭岩群间的构造边界是北秦岭一条重要的地质界线,经历了多期、不同层次复杂的构造变形,经研究可进一步划分为:早期韧性逆冲推覆变形期和晚期脆韧性逆冲推覆与走滑剪切变形期两个变形阶段。早期变形与二郎坪弧后盆地构造演化密切相关,晚期变形反映了陆内造山阶段的构造特征。

关 键 词:二郎坪岩群  秦岭岩群  构造边界  弧后盆地  构造演化

GEOLOGICAL CHARACTERISTICS OF TECTONIC BOUNDARY BETWEEN ERLANGPING AND QINLING LITHOLOGENETIC UNIT IN THE NORTHERN QINLING MOUNTAIN
Li Yalin.GEOLOGICAL CHARACTERISTICS OF TECTONIC BOUNDARY BETWEEN ERLANGPING AND QINLING LITHOLOGENETIC UNIT IN THE NORTHERN QINLING MOUNTAIN[J].Geology of Shaanxi,1998(2).
Authors:Li Yalin
Abstract:The tectonic boundary between Erlangping and Qinling Lithologenetic unit is an important boundary in north Qinling. It has undergone complicated deformation with different tectonic level. These deformation can be divided into two periods: the early ductile overthrust period and late brittle-ductile overthrust and strike fault period. The early deformation is connect with the evolution of Erlangping back-arc basin, the late stage demonstrate the feature of intracontinentalorogeny period.
Keywords:Erlangping lithologenetic unit  Qinling lithologenetic unit  tectonic boundary  back-arc basin  tectoic evolution
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