| 长江三角洲泥丘构造的发现及其意义 |
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| 引用本文： | 陈中原,许世远. 长江三角洲泥丘构造的发现及其意义[J]. 海洋与湖沼, 1995, 26(6): 639-642 |
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| 作者姓名： | 陈中原 许世远 |
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| 作者单位： | 华东师范大学地理系!上海，200062，华东师范大学地理系!上海，200062 |
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| 摘 要： | 利用浅地层剖面仪和钻孔，在１９８２－１９８３年对全新世长江水下三角洲的演化进行调查。结果表明，在现代河口沉降中心前缘在东南方６０－８０ｋｍ的浅海地区，存在着若干泥丘构造。泥丘构造由晚更新世沉积物组成，有些正在顶起上部全新统地层，有些则已出露海底达２０多米。调查资料证实，这些泥丘构造的形成，主要是由于长江河口沉降中心的沉积物擀力压实用作所致。
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| 关 键 词： | 泥丘构造 沉降 长江三角洲 三角洲 |
| 收稿时间： | 1994-03-10 |
| 修稿时间： | 1994-07-10 |
DISCOVERY AND SIGNIFICANCE OF MUD DIAPIR STRUCTURE IN THE CHANGJIANG DELTA |
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| Chen Zhongyuan and Xu Shiyuan. DISCOVERY AND SIGNIFICANCE OF MUD DIAPIR STRUCTURE IN THE CHANGJIANG DELTA[J]. Oceanologia Et Limnologia Sinica, 1995, 26(6): 639-642 |
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| Authors: | Chen Zhongyuan and Xu Shiyuan |
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| Affiliation: | Department of Geography, East China Normal University, Shanghai 200062;Department of Geography, East China Normal University, Shanghai 200062 |
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| Abstract: | Seismic profiling and coring in 1982-1983 revealed that the mud diapirs inthe subaqueous Changjiang delta region are uplifting and disturbing the overlyingHolocene sediment and have penetrated completely through the sea-floor. Thesemud diapirs, mainIy composed of late Pleistocene sediment are distributed 60-80kmsoutheast of the Changjiang River Estuary .and are located in the right front of theRecent ChangJiang depocenter. The relationship of the spatial distribution betweenthe mud diapirs and the Changjiang depocenter indicates that subsidence largely cau-sed by sediment compaction within the depocenter is the key process originating themud diapirs. |
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| Keywords: | Mud diapir Subsidence Changjiang delta |
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