| 中秦岭地区晚古生代增生的弧前构造带及演化初析 |
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| 引用本文： | 杨宗让.中秦岭地区晚古生代增生的弧前构造带及演化初析[J].陕西地质,1999(2). |
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| 作者姓名： | 杨宗让 |
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| 作者单位： | 陕西省地勘局汉中地质大队!汉中723007 |
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| 摘 要： | 文中认为中秦岭地区以刘岭群（PZ2）为代表的陆源碎屑杂砂岩系，其主体可能属晚古生代华北南缘在北俯机制下增生的弧前盆地沉积杂砂岩系。其中商、丹带中丹凤蛇绿杂岩等为该弧前盆地的基底增生杂岩单元。而华北与扬子两大陆块的最终古经合线位置应大致位于“刘岭”弧前构造带的南部边界山阳一留坝断裂带一线。
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| 关 键 词： | 中秦岭地区 刘岭群 弧前盆地 增生杂岩 古缝合线 |
THE ACCRETIONAL FOREARC STRUCTURAL ZONE AND ITS EVOLUTION ANALYSIS IN LATER PALEOZOIC IN THE MIDDLE PART OF QINLING AREA |
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| Yang Zongrang.THE ACCRETIONAL FOREARC STRUCTURAL ZONE AND ITS EVOLUTION ANALYSIS IN LATER PALEOZOIC IN THE MIDDLE PART OF QINLING AREA[J].Geology of Shaanxi,1999(2). |
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| Authors: | Yang Zongrang |
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| Abstract: | There was a typical terrigenous clastic graywacke series in Liuling group (Pz2), whichoccurred in the middle part of Qinling area, whose main composition might belong to thesedimentary graywacke series in forearc basin accreted under the south margin of NorthChina in which Danfeng's ophiolite graywacke was the graywacke unit of basementalaccretion in this forearc basin. The last paleo-suture boundary between North China andYangtze plates should be located in Shanyang-Liuba fault zone in southern boundary of.Liuling" forearc structural zone. |
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| Keywords: | the middle part of Qinling area Liuling group forearc basin accretional graywacke paleo-suture |
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