| 论华南的板溪群及其有关的大地构造问题 |
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| 关键词:Banxi Group Banxi Melange tectonic South China |
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| On the Banxi Group and Its Related Tectonic Problems in South China |
| 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. |
| LIU Hong-yun,LI Yue-jun,HAO Jie.1994.On the Banxi Group and Its Related Tectonic Problems in South China[J].Acta Geoscientica Sinica,15(3,4):88-96. |
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