| 柴北缘大煤沟矿区侏罗纪煤系层序地层及其煤岩变化特征 |
| |
| 引用本文： | 鲁静,邵龙义,鞠奇,刘天绩,文怀军,李永红,张发德,高迪.柴北缘大煤沟矿区侏罗纪煤系层序地层及其煤岩变化特征[J].煤田地质与勘探,2009,37(4):9-14. |
| |
| 作者姓名： | 鲁静 邵龙义 鞠奇 刘天绩 文怀军 李永红 张发德 高迪 |
| |
| 作者单位： | 1. 中国矿业大学煤炭资源与安全国家重点实验室, 北京 100083; |
| |
| 基金项目： | 国家重点基础研究发展计划(973计划)项目，国家自然科学基金项目 |
| |
| 摘 要： | 为揭示陆相盆地成煤沼泽内基准面变化与煤岩组分的关系,应用层序地层学理论和方法,对柴北缘大煤沟矿区侏罗纪煤系层序格架下的煤岩变化规律进行了研究。研究区共识别出区域不整合面、河流下切谷、区域构造应力转换面和地层颜色突变面等9个层序界面;将侏罗纪煤系划分为3个二级层序、8个三级层序。研究区主要煤层(F煤)形成于三级层序SⅢ6湖侵体系域中晚期的废弃辫状河冲积平原之高位沼泽环境,煤岩显微组分以高惰质组(平均57.7%)和低镜质组(平均32.0%)为特征。根据垂向上煤岩显微组分的变化特征,将F煤划分为1个四级层序和5个五级层序。垂向上F煤镜质组含量总体向上呈增加趋势,反映了泥炭沼泽内三级层序SⅢ6湖侵体系域基准面上升速率逐渐加快的动力学背景。
|
| 关 键 词： | 柴北缘 侏罗系 层序地层学 煤岩特征 |
| 收稿时间： | 2008-09-08 |
Coal petrography variation in the sequence stratigraphic frame of the Jurassic coal measures of Dameigou mine area in Northern Qaidam Basin |
| |
| LU Jing,SHAO Longyi,JU Qi,LIU Tianji,WEN Huaijun,LI Yonghong,ZHANG Fade,GAO Di.Coal petrography variation in the sequence stratigraphic frame of the Jurassic coal measures of Dameigou mine area in Northern Qaidam Basin[J].Coal Geology & Exploration,2009,37(4):9-14. |
| |
| Authors: | LU Jing SHAO Longyi JU Qi LIU Tianji WEN Huaijun LI Yonghong ZHANG Fade GAO Di |
| |
| Institution: | 1. State Key Laboratory of Coal Resources and Safety Mining, CUMTB, Beijing 100083, China;2. Qinghai Coalfield Geologic Bureau, Xining 810000, China |
| |
| Abstract: | In order to reveal the relationship between the base level in the bog of inland basin and the coal petrography variation,principle of the sequence stratigraphy has been used to study the coal petrography variation in the sequence stratigraphic frame of the Jurassic coal measures of Dameigou mine area in Northern Qaidam Basin.A total of 9 sequence boundaries have been identified(including regional unconformity surface,incised valley,regional tectonic stress transforming interface and color of strata disconti... |
| |
| Keywords: | Northern Qaidam Basin Jurassic sequence stratigraphy petrographic characteristics |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《煤田地质与勘探》浏览原始摘要信息 |
| 点击此处可从《煤田地质与勘探》下载免费的PDF全文 |
|
