| 袁宏.雷山—锦屏一带清水江组软沉积构造的变形特征——远古的地震记录[J].贵州地质,2015,32(2):114-118 |
| 雷山—锦屏一带清水江组软沉积构造的变形特征——远古的地震记录 |
| Deformation Features of Soft Sedimentary Structure in Qingshuijiang Formation of Leishan-Jinping Area: Earth quake Record in Ancient Times |
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| DOI： |
| 中文关键词: 古地震带 软沉积变形 清水江组 雷山—锦屏 |
| 英文关键词:Ancient earthquake belt Soft sedimentary deformation Qingshuijiang formation |
| 基金项目:国家自然科学基金重点项目（编号410303315）、黔北梵净山地区及黔南摩天岭地区前寒武纪古大陆演化及沉积岩相古地理研究（编码：1212011121106） |
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| 中文摘要: |
| 通过面上地质调查，在黔东南雷山—锦屏一带的新元古代清水江组含火山碎屑之砂泥质岩层中，发现了大量软沉积物变形构造，主要有滑塌、滑移及阶梯状微断层。根据前人对形成该软沉积物变形的模拟试验成果，推断该类软沉积变形的机制与震动液化有关，其动力来源于古地震。在清水江组地层分布区，沉积物中含大量凝灰质，显示出古地震与古火山作用相伴频发之特点，这是新元古代裂谷盆地在此阶段构造演化的响应。 |
| 英文摘要: |
| ]By geologic survey in Leishan-Jinping area, abundant soft sedimentary deformation structure are found in the sandy and muddy layer with volcanic rubble of Qingshuijiang formation in Neoproterozoic Era, mainly are landslide, slip and ladder shaped microfault. According to the simulation experiment to the soft sediment deformation of the former researchers, it’s thought this kind mechanism of soft sediment deformation has relation with vibrate liquefaction, the power came from ancient earthquake. In the Qingshuijiang formation layer distribution area, a lot of tuff material is found in the sediment, it shows the feature of ancient earthquake and volcanic process happed frequently. It’s the response of rift basin of Neoproterozoic Era in the structural evolution of this period. |
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