Oil & Gas Geology ›› 2000, Vol. 21 ›› Issue (4): 287-292.doi: 10.11743/ogg20000401

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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

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

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