西北太平洋边缘及特提斯北缘中生代盆地成因(下)

新疆石油地质 ›› 2001, Vol. 22 ›› Issue (5): 448-451.

西北太平洋边缘及特提斯北缘中生代盆地成因(下)

许浚远, 张凌云

中国地质大学石油系,湖北武汉 430074

收稿日期:2001-03-21 出版日期:2001-10-01 发布日期:2020-09-27
作者简介:许浚远（1960-）,男,安徽枞阳人,博士,副教授,石油地质与勘探。
基金资助:
国家自然科学基金项目(49502033)、大港油田项目（99-0536）、中国石油与天然气总公司“九五”科技攻关项目资助

Origin of Mesozonic Basins on the Northwest Pacific Margin and the North Tethys Margin

XU Jun-yuan, ZHANG Ling-yun

Received:2001-03-21 Online:2001-10-01 Published:2020-09-27
About author:XU Jun-yuan(1960-), Male, Doctor, Petroleum Geology, Petroleum Department, China University of Geoscience, Wuhan, Hubei, 430074, China

摘要/Abstract

摘要： 主要对与西北太平洋边缘中生代盆地构造演化有关的三个问题进行了讨论,认为:①郯庐断裂形成于元古代并发生大规模的左行平移,在中生代,该断裂发生过周期性地左行和右行平移;②目前大多数古地磁资料含有若干不确定因素并常与地质事实矛盾,难以用于较高精度的古构造重建;③海底扩张学说与西北太平洋边缘盆地源于右行剪切拉分也可以和谐,但是它与一些地质事实不符。提出了“海底裂谷被动拉张说”或简称“海底拉张说”,强调大陆板块及大洋板块主动漂移的作用,而地幔羽促进了板块分裂、会聚和剪切。海底拉张说更有力地支持西北太平洋边缘盆地源于右行剪切拉分的认识。

关键词: 西北, 太平洋, 边缘, 郯城—庐江断裂带, 古地磁, 海底扩张

Abstract: These problems related to origin of the Mesozoic basins on the northwest Pacific margin and the north Tethys margin are selected to be discussed. The results show that:① Tancheng-Lujiang (Tan-Lu) Fault was formed in Preterozoic era and large- scale sinistral parallel displacement occurred. It episodically reactivated as a dextral strike-slipping fault in Mesozoic, which is implied by tectonice style ( “fazy Z”shape) of Mesozoic rifts on its lateral flanks. ②Most of present paleomagnetic data contain many uncertainties and some of them contradict the basic geologic truth. So present paleomagnetic data cannot be used to reconstruct tectonics with a ltle higher precision.③seafloor spreading hypothesis contradicts some geological facts. Seafloor rift passove extension hypothesis,in which active drifts of continental and oceanic plates( blocks) are emphasized, is proposed to replace seafloor spreading hypothesis.

Key words: northwest, Pacifi, margin, Tancheng-Lujiang fault belt, paleomagnetism, seafloor spreading hypothesis

中图分类号:

P542.4

许浚远, 张凌云. 西北太平洋边缘及特提斯北缘中生代盆地成因(下)[J]. 新疆石油地质, 2001, 22(5): 448-451.

XU Jun-yuan, ZHANG Ling-yun. Origin of Mesozonic Basins on the Northwest Pacific Margin and the North Tethys Margin[J]. Xinjiang Petroleum Geology, 2001, 22(5): 448-451.

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