| 转换-伸展盆地——莺歌海的演化 |
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| 引用本文： | 孙家振,杨士恭.转换-伸展盆地——莺歌海的演化[J].地球科学,1995,20(3):243-249. |
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| 作者姓名： | 孙家振 杨士恭 |
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| 作者单位： | 武汉石油地质系，武汉矿产系，南海西部石油公司 |
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| 基金项目： | “八五”国家重点科技攻关项目 |
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| 摘 要： | 在系统研究莺歌海盆地沉降史、变形史、充填史和埋藏史和基础上，确定了莺歌海盆地的演化阶段和分地类型，并建立了转换－－伸展盆地的演化模式，莺歌海盆地演可分为４个主要发展阶段；（１）初始断陷；（２）裂陷；（３）拗陷（４）再次裂陷，盆地的沉降机理是：初始断陷为岩石圈刚性体的简单伸展；裂陷为与先期切断裂带重新活动腾的走滑－－伸展；拗陷走滑－伸展相对较弱，叠加热沉降；再次裂陷以走滑－伸展为离，叠加重力沉降和压
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| 关 键 词： | 莺歌海 伸展盆地 转换盆地 裂陷 渔化模式 |
EVOLUTION OF TRANSFORM-EXTENSION YINGGEHAI BASIN |
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| Sun Jiazhen,Li Lanbin.EVOLUTION OF TRANSFORM-EXTENSION YINGGEHAI BASIN[J].Earth Science-Journal of China University of Geosciences,1995,20(3):243-249. |
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| Authors: | Sun Jiazhen Li Lanbin |
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| Abstract: | Based on the systematic researches of histories of the subsidence,deformation,infilling and bury, the paper has determined the type and evolution stages of Yinggehai basin, and established the model of transform-extension basin, Evolution of Yinggehai basin can be divided into four major stages:(1)initial fault depression;(2)rifting;(3)depression; and(4) rerifting stages.The subsidence mechanism includes:simple extension of initial fault-depression in the lithospheric rigidity body; strike-extension of rifting related to the influence of reactivated pre-existing basement shear zones;slightly strike-extension,surperimposed thermal subsidence of depression;strike-extension, superimposed gravity,subsidence and compaction of rerifting. |
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| Keywords: | transform-extension basin rifting stage subsidence mechanism evolution model Yinggehai basin |
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