| 马小平.和什托洛盖盆地中下侏罗统地震层序地层研究[J].地质找矿论丛,2022,37(4):518-523 |
| 和什托洛盖盆地中下侏罗统地震层序地层研究 |
| Seismic sequence analysis of Early-Middle Jurassic Series in Heshituoluogai basin, Xinjiang |
| 投稿时间：2022-04-08 |
| DOI：10.6053/j.issn.1001-1412.2022.04.014 |
| 中文关键词: 地震勘探 层序地层 下中侏罗统 和什托洛盖盆地 新疆 |
| 英文关键词:seismic survey sequential stratigraphy Early-Middle Jurassic series Heshituoluogai basin Xinjiang |
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| 中文摘要: |
| 开展地震层序地层学研究对含煤盆地层序地层格架建立、沉积体系划分和整体煤层对比具有重要意义。地震层序解释以地震剖面为基础,识别不同级别的不整合面及与之对应的界面,并进行横向对比追踪与闭合,建立等时地层格架。本文基于新疆西北部和什托洛盖盆地丰富的地震剖面,结合钻井标定和测井解释,开展对和什托洛盖盆地中下侏罗统地震层序地层特征研究,结果表明,和什托洛盖盆地中下侏罗统可识别出2个二级层序界面、6个三级层序界面,并划分为1个二级层序,7个三级层序;其中,八道湾组可划分为3个三级层序,三工河组和西山窑组各划分为2个三级层序。SQ1高位体系域、SQ6湖扩体系域及SQ7高位体系城普遍发育煤层,主要煤层位于SQ7高位体系域。 |
| 英文摘要: |
| Study on seismic sequential stratigraphy is of great significance to building stratigraphy frame, division of sedimentary systems and correlation of coal seams. Seismic sequence interpretation is based on seismic section to identify different Uncoformities and the corresponding interfaces and carry out lateral correlation for the tracing and closure. Based on abundant seismic sections in the Northwest Xinjiang and Heshituoluogai basin and drilling data and interpretation of well log is studied seismic sequential stratigraphic characteristics of Middle-Lower Jurassic Series in the basin and 2 interfaces of order 2, 6 interfaces of order 3, 1 sequences of order 2, 7 sequences of order 3 recognized. In Badaowan formation are recognized 3 sequences of order 3. Sangonghe formation is divided into 2 sequences of order 3, Xishan formation 2 sequences of order 3. In high standard system track SQ1, lake expanding system track SQ7 and high standard system track SQ7 generally occur coal seams but the main coal seam in highstand system track SQ7. |
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