| 安徽寿县新元古界一个滑塌-滑脱软沉积物变形复合构造的发现及地质初探 |
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| 关键词:landslide deformation soft-sediment deformation structure seismic event deformation complex sluicing structure |
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| The Discovery and Geological Preliminary Investigation of A Slump-slip Soft-sediment Deformation Multilayer Complex Structure in Neoproterozoic Strata in Shouxian County, Anhui Province |
| A slump-slip soft-sediment deformation multilayer complex structure was found in siltstone layer at the bottom of Neoproterozoic Sishilichangshan Formation in Shouxian County of Anhui Province. An observation of rock profile reveals that the sedimentary deformation structure has experienced three deformation processes, i.e., landslide deformation, slip deformation and seismic liquefaction deformation. The soft-sediment deformation structure is a good presentation of the original sedimentary deformation process and sedimentary features. Based on an analysis of the sedimentary deformation structure, the authors have found that the deformation structure belongs to the soft-sediment deformation structure formed in a shallow slope facies. Multiple seismic waves produced in seismic events caused soft-sediment slumping, fold slip and liquid discharge through the shock and sliding rolling deformation activities, resulting in the formation of the soft-sediment deformation composite structure with complex deformation features. The soft-sediment deformation structure is a record of the multiple seismic activities in one seismic event. |
| WANG Xi,WANG Ming-zhen.2012.The Discovery and Geological Preliminary Investigation of A Slump-slip Soft-sediment Deformation Multilayer Complex Structure in Neoproterozoic Strata in Shouxian County, Anhui Province[J].Acta Geoscientica Sinica,33(1):49-56. |
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