| 南海共轭陆缘新生代碳酸盐台地 对海盆构造演化的响应 |
| |
| 引用本文： | 吴时国,张新元.南海共轭陆缘新生代碳酸盐台地 对海盆构造演化的响应[J].地球科学,2015,40(2):234-248. |
| |
| 作者姓名： | 吴时国 张新元 |
| |
| 作者单位： | 中国科学院海洋研究所,中国科学院海洋地质与环境重点实验室,山东青岛266071 2.中国科学院三亚深海科学与工程研究所,海南三亚572000 3.中国科学院大学,北京100049 |
| |
| 基金项目： | 国家基金委南海重大计划-重点基金项目(No.91228208)中国科学院三亚深海科学与工程研究所(No.SIDSSE-201403) |
| |
| 摘 要： | 南海新生代碳酸盐台地分布面积广、厚度巨大,但大部分已经淹没,成为淹没碳酸盐台地,它们孕育着南海海盆演变的
重要信息.南海碳酸盐台地伴随着南海陆缘张裂而发育,最初主要发育在两个共轭陆缘伸展地块的构造高地.南海经历了大陆
边缘伸展、岩石圈减薄和地幔剥露等过程,始新世到早渐新世的第二期NE-SW 向扩张,形成了破裂不整合面,随之发生了晚
渐新世至早中新世的海底扩张,形成中央海盆.构造沉降提供了台地生长的可容纳空间,构造掀斜作用、断裂作用和前陆盆地
前沿挤压褶皱的迁移控制了台地各单元厚度、沉积相和地震反射终止特征在横向上的变化,构造控制的相对海平面的变化控
制了不同级序生物礁碳酸盐台地的沉积旋回,而后期加速沉降导致碳酸盐台地淹没.
|
| 关 键 词： | 碳酸盐台地 共轭陆缘 构造演化 新生代 南中国海 海洋地质. |
Response of Cenozoic Carbonate Platform on Tectonic Evolution in the Conjugated Margin of South China Sea |
| |
| Wu Shiguo,Zhang Xinyuan.Response of Cenozoic Carbonate Platform on Tectonic Evolution in the Conjugated Margin of South China Sea[J].Earth Science-Journal of China University of Geosciences,2015,40(2):234-248. |
| |
| Authors: | Wu Shiguo Zhang Xinyuan |
| |
| Abstract: | Cenozoic carbonate platforms of great thickness are widely deve1oped in the South China Sea, most of which have
been drowned since the Late Cenozoic and named drown carbonate platform accordingly. The carbonate platforms in the South
China Sea are unique and rich in tectonic evolution information. The carbonate platforms were deve1oped by the rifting proces-
ses, and were initiated on the faulted b1ock shoulder in the conjugated rifting margin. The South China Sea margin experienced
rifting, thinning, and mantle exhumation. The Eocene and Early 01igocene NE-SW direction riftingled to breakup unconformi-
ty. Then Centra1 Ocean Basin occurred during Late 01igocene-Early Miocene sea f1oor spreading. Tectonic tilt, faulting and mi-
gration of compressive fold in the front of foreland basins contro11ed the distribution, thickness and seismic reflection horizonta1
variation. Tectonic induced relative sealeve1 changes contro11ed the sedimentary cycles of carbonate platforrns. ^nd more, later
rapid subsidence in Late Miocene induced the drowning of most carbonate platforms. |
| |
| Keywords: | carbonate platform conjugated margin tectonic evolution Cenozoic South China Sea marine geology |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《地球科学》浏览原始摘要信息 |
| 点击此处可从《地球科学》下载免费的PDF全文 |
|
