石油与天然气地质 ›› 2000, Vol. 21 ›› Issue (4): 287-292.doi: 10.11743/ogg20000401

• 前沿探索 •    下一篇

西北太平洋边缘新生代盆地成因(下):后裂谷期构造演化

许浚远, 张凌云   

  1. 中国地质大学石油系,湖北武汉430074
  • 收稿日期:1999-11-12 出版日期:2000-12-25 发布日期:2012-01-16
  • 基金资助:

    国家自然科学基金项目

GENESIS OF CENOZOIC BASINS IN NORTHWEST PACIFIC MARGIN(3): TECTONIC EVOTUTION OF POST RIFTING PERIOD

Xu Junyuan, Zhang Linyun   

  1. Department of Petroleum Geology, China University of Geosciences, Wuhan, Hubei
  • Received:1999-11-12 Online:2000-12-25 Published:2012-01-16

摘要:

西北太平洋边缘形成连锁右行拉分裂谷系统后,在后裂谷期它们虽然基本上继承了原来盆地格架,但遭到一定程度的改造。其中改造作用最显著的盆地是菲律宾海盆地。在中新世,由于北移澳大利亚板块新几内亚块体的楔入,菲律宾海盆地反转成转换挤压型盆地;与菲律宾海沟断裂公轭剪切而形成的西菲律宾海盆中央断裂,小角度切割原NW-W向密集的R′断裂;四国海盆和帕里西维拉海盆转为“撞击”裂谷;马里亚纳海盆则为马里亚纳洋脊弯曲裂开的产物;班达海盆受到近NS向挤压而变形;东海盆地也随琉球岛弧形成受压而变形。中新世末台湾岛开始形成。在上新世至第四纪,太平洋板块向西的挤压较澳大利亚板块向北的挤压强烈,新几内亚海沟具明显左行位移;印度板块强烈推挤欧亚板块,大多数盆地叠加有弱右行拉分作用(由西向东减弱)。全球构造上,新第三纪和第四纪澳大利亚板块和欧亚板块北移均可造成东太平洋边缘圣安德列斯断裂等右行平移。

关键词: 西北太平洋边缘, 边缘盆地, 菲律宾海, 转换挤压型盆地, 圣安德列斯断裂

Abstract:

Though Cenozoic link dextral pull-apart rift system in the northwest Pacific margin basically inherited their original tectonic framework in post rifting period,they underwent some reformation,especially the Philippine Sea Basin.In the Miocene,New Guinea Block of the north drifting Australia Plate wedged in the Philippine Sea Basin and turned the basin into a rhombic transpressional basin;the central fault of West Philippine Sea Basin cut NW-W-trending R′faults at small angle;Shikoku and Parece Vela Sea Basins was turned into impact rifts.The bending and cracking of Mariana Ridge resulted in Mariana Ses Basin,the East China Sea was compressed and deformed due to the formation of Ryukyu Arc.In the end of the Miocene,Taiwan Island began to form.In Pliocene-Quaternary,the westward compression of Pacific Plate was more intensive than the northward compression of Australia Plate,this resulted in sinistral drifting of New Guinea Trench.The India Plate pushed Eurasia Plate intensively,leading to the stacking of weak dextral pull-apart action.According to global tectonic evolution,the northward drift of the Austratia and Eurasia Plates during Neogene Quaternary could result in right lateral shift of the San Andreas rift.

Key words: Northwest Pacific margin, marginal basin, the Philippine Sea, transpressional basin, San Andreas Rift

中图分类号: