| 湘东南晚三叠世—侏罗纪沉积特征及盆地性质和成因机制 |
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| 引用本文： | 柏道远,钟响,贾朋远,刘耀荣,黄文义.湘东南晚三叠世—侏罗纪沉积特征及盆地性质和成因机制[J].地质力学学报,2011,17(4):338-349. |
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| 作者姓名： | 柏道远 钟响 贾朋远 刘耀荣 黄文义 |
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| 作者单位： | 湖南省地质调查院,湖南长沙,410011 |
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| 基金项目： | 中国地质调查局“湖南1∶250000武冈市和永州市幅区调修测”项目;“中国地质构造区划综合研究与区域地质志修编”项目(1212010811032)联合资助 |
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| 摘 要： | 关于湘东南晚三叠世—侏罗纪沉积盆地性质存在挤压相关类前陆盆地及断陷盆地等不同认识.沉积物分布及岩相特征研究表明:湘东南晚三叠世—早侏罗世早期为海相—海陆交互相沉积环境,早侏罗世晚期—中侏罗世早期为陆相沉积环境；晚三叠世盆地为分布于茶陵—郴州大断裂东侧(上盘)的北北东—近南北向狭长海湾,早侏罗世开始盆地向东、西两侧扩展；...
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| 关 键 词： | 晚三叠世—侏罗纪 拉张盆地 南北向挤压 东西向伸展 湘东南 |
| 收稿时间： | 2011/3/17 0:00:00 |
SEDIMENTARY CHARACTERISTICS, BASIN TYPE AND DYNAMIC MECHANISMS DURING LATE TRIASSIC-JURASSIC IN SOUTHEASTERN HUNAN PROVINCE |
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| BAI Dao-yuan,ZHONG Xiang,JIA Peng-yuan,LIU Yao-rong and HUANG Wen-yi.SEDIMENTARY CHARACTERISTICS, BASIN TYPE AND DYNAMIC MECHANISMS DURING LATE TRIASSIC-JURASSIC IN SOUTHEASTERN HUNAN PROVINCE[J].Journal of Geomechanics,2011,17(4):338-349. |
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| Authors: | BAI Dao-yuan ZHONG Xiang JIA Peng-yuan LIU Yao-rong and HUANG Wen-yi |
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| Institution: | (Hunan Institute of Geology Survey,Changsha 410011,China) |
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| Abstract: | There are different standpoints such as para-foreland basin and down-faulted basin about the Late Triassic-Jurassic basin in southeastern Hunan.Distribution of the sediments and lithofacies character show information as follows: there existed marine and marine-terrigenous sedimentary environment during Late Triassic-early Early Jurassic in southeastern Hunan,while continental sedimentary environment during late Early Jurassic-early Middle Jurassic;the Late Triassic basin was a NNE-SN trending narrow and long bay along the east side of Chaling-Chenzhou fault,and the basin expanded to east and west since Early Jurassic;the Late Triassic-Jurassic sediments covered crosswise on older layers.All the above indicated that the Late Triassic-Jurassic basin in southeastern Hunan wasnt a para-foreland depressive basin controlled by NS-compression.Combined with regional tectonic setting,the authors bring forward recognition as follows: the forming of the basin was mainly related with the EW-extention of NNE-trending faults under regional SN-compressional stress field,which confirmed that the lineament trend of Indosinian Movement in southeast Hunan was NNE;above evolution from marine to continental suggested that a EW-trending uplift formed to south of the study area since late Early Jurassic under regional S-N-compression,and that the study area was in a regional depressive tectonic setting when the basin extended in late development stage.These render the complex extensional or compressional space-time variation of tectonic regime when the Late Triassic-Jurassic basins developed in south China. |
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| Keywords: | Late Triassic-Jurassic extensional basin NS-compression EW-extension southeastern Hunan Province |
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