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冲绳海槽--弧后背景下大陆张裂的最高阶段

周祖翼 廖宗廷 金性春 贾健谊

海洋地质与第四纪地质2001,Vol.21Issue(1):51-55,5.
海洋地质与第四纪地质2001,Vol.21Issue(1):51-55,5.

冲绳海槽--弧后背景下大陆张裂的最高阶段

OKINAWA TROUGH:THE HIGHEST STAGE OF CONTINENTAL TENSION RIFTING IN BACK-ARC SETTING

周祖翼 1廖宗廷 1金性春 1贾健谊2

作者信息

  • 1. 同济大学 海洋地质教育部重点实验室,
  • 2. 中国新星石油公司 上海海洋石油局,
  • 折叠

摘要

Abstract

Characteristics of the Okinawa Trough such as high heat-flow values,intensive earthquake activities,volcanic activities,extensional faulting and rapid subsidence have indicated that the evolution of the trough has reached the highest stage of continental tension rifting.Calculations from seismic refraction and gravitational data show that anomalous mantle of low density exist beneath the Okinawa Trough and that Moho in the trough lies between 15.4 km and 23.8 km in depth.In our proposed evolutional cycles for marginal sea basins,the Okinawa Trough is in the embryonic stage,that means it is in the highest stage of continental tension rifting and in the transitional stage of back-arc seafloor spreading.The Okinawa Trough can also be considered as an important link between East African Rift and Red Sea stage in the Wilson Cycle.

关键词

大陆张裂/边缘海/冲绳海槽

分类

海洋科学

引用本文复制引用

周祖翼,廖宗廷,金性春,贾健谊..冲绳海槽--弧后背景下大陆张裂的最高阶段[J].海洋地质与第四纪地质,2001,21(1):51-55,5.

基金项目

国家自然科学基金资助项目 ()

海洋地质与第四纪地质

OA北大核心CSCD

0256-1492

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