华南上扬子区奥陶纪特马豆克阶的海平面变化
发布时间：2018-09-01 18:55
【摘要】：在较为精细的生物地层学研究基础上,对位于华南上扬子区4条剖面的沉积相组合以及沉积相序列进行分析,建立上扬子区特马豆克期高分辨率相对海平面变化曲线。识别出10个沉积相,划分出3个沉积相组合,分别沉积于浅潮下带、深潮下带和页岩盆地带;识别出5次重要的海侵事件,分别发生在TS.1a早期、TS.1a晚期、TS.1c早期、TS.1c晚期和TS.1d晚期,其中TS.1c早期的海侵为特马豆克期最大海侵事件。通过与其他板块海平面变化曲线的对比,发现上扬子区海平面变化主要受全球海平面变化的控制。
[Abstract]:On the basis of detailed biostratigraphic studies, the sedimentary facies assemblages and sedimentary facies sequences of 4 sections in the Upper Yangtze area of South China are analyzed, and the high resolution relative sea level change curves of the Termaduke period in the Upper Yangtze region are established. Ten sedimentary facies were identified and 3 sedimentary facies combinations were identified, respectively, which were deposited in shallow subtidal zone, deep tidal zone and shale basin zone, and 5 important transgression events were identified, which occurred in the late stage of TS.1c and late TS.1c of TS.1a, and the late stage of TS.1d, respectively, in the early stage of TS.1a, in the late stage of TS.1c, and in the late stage of TS.1d. The early transgression of TS.1c was the largest transgressive event in the Temadouk period. By comparing with other plate sea level change curves, it is found that the sea level change in the upper Yangtze area is mainly controlled by the global sea level change.
【作者单位】： 造山带与地壳演化教育部重点实验室北京大学地球与空间科学学院;
【基金】：国家自然科学基金(41272035,41221001,41290262)资助
【分类号】：P534.42
[Abstract]:On the basis of detailed biostratigraphic studies, the sedimentary facies assemblages and sedimentary facies sequences of 4 sections in the Upper Yangtze area of South China are analyzed, and the high resolution relative sea level change curves of the Termaduke period in the Upper Yangtze region are established. Ten sedimentary facies were identified and 3 sedimentary facies combinations were identified, respectively, which were deposited in shallow subtidal zone, deep tidal zone and shale basin zone, and 5 important transgression events were identified, which occurred in the late stage of TS.1c and late TS.1c of TS.1a, and the late stage of TS.1d, respectively, in the early stage of TS.1a, in the late stage of TS.1c, and in the late stage of TS.1d. The early transgression of TS.1c was the largest transgressive event in the Temadouk period. By comparing with other plate sea level change curves, it is found that the sea level change in the upper Yangtze area is mainly controlled by the global sea level change.
【作者单位】： 造山带与地壳演化教育部重点实验室北京大学地球与空间科学学院;
【基金】：国家自然科学基金(41272035,41221001,41290262)资助
【分类号】：P534.42
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