| 南黄海盆地基底及海相中、古生界地层分布特征 |
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| 引用本文： | 张训华,杨金玉,李刚,杨艳秋.南黄海盆地基底及海相中、古生界地层分布特征[J].地球物理学报,2014,57(12):4041-4051. |
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| 作者姓名： | 张训华 杨金玉 李刚 杨艳秋 |
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| 作者单位： | 1. 国土资源部油气资源和环境地质重点实验室, 青岛 266071;
2. 青岛海洋科学与技术国家实验室海洋矿产资源评价与探测技术功能实验室, 青岛 266000;
3. 青岛海洋地质研究所, 青岛 266071 |
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| 基金项目： | 国土资源地质大调查专项(GZH200900504)(GZH200800503)(200311000007),全国油气资源战略选取调查与评价国家专项(XQ-2005-01)(2009GYXQ05-1),国家自然科学基金重大国际(地区)合作研究项目(41210005),国家自然科学基金青年基金项目(41206050)联合资助. |
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| 摘 要： | 南黄海盆地是大型海相中、古生界和陆相中、新生界两期叠合型盆地,本文根据最新地震资料结合钻井资料及与海陆地质资料的对比研究对盆地内地震层序进行了划分,得到了陆相中、新生界盆地基底即中、古生界海相盆地的顶界埋深、三叠系和上二叠统的残留厚度,推断了陆相层基底地层分布,并根据磁力异常资料推测了海相中、古生界盆地结晶基底埋深,推断了海相中、古生界整体残留情况.下三叠统青龙组和上二叠大隆及龙潭组在南黄海盆地南部坳陷及勿南沙隆起广泛存在,而在北部坳陷的分布则狭窄,中部隆起则由于隆起和剥蚀作用导致这两套地层几乎没有残余.对中-古生界海相盆地和中-新生界陆相盆地的基底特征进行了比较,认为海相中、古生界在南黄海地区区域性存在,海相层厚度分布特征受基底起伏控制,同时受到印支板块运动的影响,中部隆起区是海相中、古生界比较稳定的地区.下古生界可能在南黄海盆地广泛分布,但受资料限制,还难以获知其残余地层的特征.
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| 关 键 词： | 南黄海 陆相中、中新生界盆地 海相中、古生界盆地 基底结构 残留厚度 |
| 收稿时间： | 2013-08-12 |
Basement structure and distribution of Mesozoic-Paleozoic marine strata in the South Yellow Sea basin |
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| ZHANG Xun-Hua,YANG Jin-Yu,LI Gang,YANG Yan-Qiu.Basement structure and distribution of Mesozoic-Paleozoic marine strata in the South Yellow Sea basin[J].Chinese Journal of Geophysics,2014,57(12):4041-4051. |
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| Authors: | ZHANG Xun-Hua YANG Jin-Yu LI Gang YANG Yan-Qiu |
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| Institution: | 1. Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Mimistry of Land and Resources, Qingdao 266071, China;
2. Function Laboratory for Marine Mineral Resource Geology and Exploration, Qingdao National Oceanography Laboratory, Qingdao 266000, China;
3. Qingdao Institute of Marine Geology, Qingdao 266071, China |
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| Abstract: | The South Yellow Sea basin is a large superposed basin composed of a Paleozoic-Mesozoic marine sedimentary basin and Mesozoic-Cenozoic terringenous sedimentary basin. The structure and stratigraphic distribution of the lower crystal basement and the upper folded basement of the two kinds of basins are discussed based on integrated geological and geophysical data. New seismic data interpretation combined with drilling data and geological correlation between land and sea are used to identify the marine Paleozoic-Mesozoic stratigraphic sequence. The depth of the top surface of the marine Paleozoic-Mesozoic strata is determined by seismic interpretation; undulation of the bottom surface is derived by magnetic inversion. The residual thickness of Triassic Qinglong limestone and upper Permian strata is also analyzed in order to understand the distribution and structure features of the marine Paleozoic-Mesozoic strata. The thickness and distribution of the marine sequence are mainly controlled by the undulation of the basement, and also influenced greatly by the Indosinian movement. The thickness of the marine Paleozoic-Mesozoic strata is comparatively stable in the central uplift. The lower Triassic Qinglong formation and the upper Permian Dalong and Longtan formations are widely distributed in the southern depression and the Wunansha uplift of the South Yellow Sea basin, while the distribution of this sequence in the northern depression is very limited; in the central uplift, few are left due to uplift and denudation. At present, the residual thickness of the lower Paleozoic remains unknown due to limited data. |
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| Keywords: | The South Yellow Sea basin Mesozoic-Cenozoic continental sedimentary basin Paleozoic-Mesozoic sedimentary basin Basement structure Residual thickness |
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