| 环特提斯盆地与环西太平洋盆地 |
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| 关键词:circum-Therys circum- pacific basin |
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| Circum-Tethys and Circum-Pacific Basins |
| Mesozoic circum-Tethyb and circum-Pacific basins,which are genetically related to theTethys and circum-Pacific tectonic zones. are the regions with most abundant petroleum and natural gas of the world.These two tectonic System intersect in China.,most of Mesozoicbasins in China are belonging to the two systems.Circum-Tethys basins were developed against a background of crustal compression. They are the result of compressional thrusting and the yielding sinking of the crust.Warm-moderately hot foreland basins are the most representative ones. Hydrocarbon source rockevolved slowly, threshold depth of oil-gernaration is great,petroliferous beds have relatively anolder age and a greater depth. Circum-(West)Pacific basins were formed against a background of extensional thinningof the crust and frequent geothrmal activities. They are the result of initial sinking andgeothermal sinking. Hot rift basins are the most representative ones. Hydrocarbon source rock evolved rapidly,threshold depth of oil- generation is small,petroliferous beds have relatively ayounger age and a smaller depth. |
| FENG Fu-kai.1994.Circum-Tethys and Circum-Pacific Basins[J].Acta Geoscientica Sinica,15(3,4):145-158. |
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