| 兴化XH-1孔记录的苏北盆地晚新生代沉积体系及环境变化过程 |
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| 引用本文： | 张茂恒,李吉均,舒强,陈晔,赵志军.兴化XH-1孔记录的苏北盆地晚新生代沉积体系及环境变化过程[J].地理研究,2011,30(3):513-522. |
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| 作者姓名： | 张茂恒 李吉均 舒强 陈晔 赵志军 |
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| 作者单位： | 1. 南京师范大学地理科学学院,南京 210097;
2. 江苏省环境演变与生态建设重点实验室,南京 210097;
3. 兰州大学资源与环境学院,兰州 730000 |
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| 基金项目： | 国家自然科学基金项目(40471135,40501075) |
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| 摘 要： | 通过对位于苏北盆地中部的兴化XH-1孔350.08 m连续岩芯的古地磁测年,确定了年代地层序列.在此基础上,对钻孔沉积物进行了以粒度特征为重点,包括矿物组成、结构、沉积构造和沉积组合在内的综合岩相古地理分析,划分出8个沉积相和19个沉积亚相.并根据沉积相的组合特征,将苏北盆地3.20Ma以来的沉积环境演化划分为沉降盆地...
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| 关 键 词： | 兴化 苏北盆地 晚新生代 沉积体系 环境变化 |
| 收稿时间： | 2010-06-17 |
| 修稿时间： | 2010-09-06 |
The sediments sequence and environmental oscillation of the core XH-1 in Subei Basin since late Cenozoic |
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| ZHANG Mao-heng,LI Ji-jun,SHU Qiang,CHEN Ye,ZHAO Zhi-jun.The sediments sequence and environmental oscillation of the core XH-1 in Subei Basin since late Cenozoic[J].Geographical Research,2011,30(3):513-522. |
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| Authors: | ZHANG Mao-heng LI Ji-jun SHU Qiang CHEN Ye ZHAO Zhi-jun |
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| Institution: | 1. College of Geography Science, Nanjing Normal University, Nanjing 210046, China;
2. Key Laboratory of Environmental Evolution and Ecological Construction of Jiangsu Province, Nanjing 210046, China;
3. Department of Geography, Lanzhou University, Lanzhou 730000, China |
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| Abstract: | Based on paleomagnetism dating and the grain size of sediments, as well as the paleolitho facies analyzing like mineral composition, deposit structure and sediments assembly, we identified 8 sedimentary facies and 19 subfacies of the core XH-1 in Xinghua, Subei Basin. These facies show that the basin had come through four specific intervals as basin subside, construct lake, broad lake and shoal land 3.2 Ma BP. The changes of topography and the drainage system well recorded the two structure movements during the 2.25-2.10 Ma BP and 1.90-1.72 Ma BP. During and after the Kunhuang Movement 0.99 Ma BP, the sediments sequences varied abruptly and confirmed the transformation of the East Asian Monsoon during that time. Comparing the changes of topography, climate and the drainage system of the basin, we try to hold the clue of the coupling of the basin evolvement and the uplift of the Tibetan Plateau. |
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| Keywords: | Xinghua Subei Basin Late Cenozoic sedimentary system environmental change |
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