| 论华南的板溪群及其有关的大地构造问题 |
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| 引用本文：刘鸿允,李曰俊,郝杰.1994.论华南的板溪群及其有关的大地构造问题[J].地球学报,15(3,4):88-96. |
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| 中文摘要:研究认为板溪群为雪峰一武陵山区的一个岩石地层单位，由马底驿组和五强溪组组成，是一套正常的沉积地层而不是构造杂岩；华南不存在“华南阿尔卑斯”证据的飞来峰和构造窗；原带状大“板溪群”中含蛇绿岩外来岩块的变质岩系形成于前震旦纪。 |
| 中文关键词:板溪群 板溪群杂岩 华南大地构造 |
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| On the Banxi Group and Its Related Tectonic Problems in South China |
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| Abstract:In South China ,the Banxi Group is a stratigraphic unit.It has attracted wide attention since K.J.Hsu et al interpreted it as a Banxi Melange in their tectonic model of “Huannan Alps”in the 19980's.The geological studies make us believe that it is reasonable to redefine the Banxi Group as a lithostratigraphic unit composed of Madiyi and Wuqingxi Formation in the Xuefeng-Wuling mountain area.The meaning of Banxi Group in Hsu's Banxi Melange is that of the large “Banxi Group”used in the 1960's and 1970's.The stratigraphic,tectonic,isotopic and paleontologic data make it clear that:(1)the Banxi Group has a mormal sedimentary sequence；(2)the subgroup of the former large “Banxi Group”is a set of metamorphic rocks with ophiolite blocks and was formed before Sinian but not in Mesozoic collision orogeny in South China (Huannan Alps)；(3)there is no structural window or klippe that can be taken as the evidence for Huannan Alps and Hsu's concept of Ban xi Melange.As a result,Hsu's concept is untenable,and there is no Huannan Alps or Mesozoic collision orogeny between the Yangtze and Huannan blocks. |
| keywords:Banxi Group Banxi Melange tectonic South China |
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