About This Item
- Full text of this item is not available.
- Abstract PDFAbstract PDF(no subscription required)
Share This Item
The AAPG/Datapages Combined Publications Database
Houston Geological Society Bulletin
Abstract
Abstract: Tectonic and Paleogeographic
Setings of Northeast Asia
Hydrocarbon Systems
By
Most of China and Soviet Asia were formed by the welding of micro-continents and accretionary wedge assemblages from Devonian through late Cretaceous time. The first hydrocarbon systems developed in late Precambrian to middle Paleozoic basins on continental platform blocks prior to the Hercynian welding of plates. Later hydrocarbon systems developed in both extensional and compressional successor basins associated with plate collisions from late Paleozoic to Cenozoic time.
Basins with cratonic tectono-stratigraphic assemblages,
which formed on Archean - early Paleozoic microcontinent
plates, feature hydrocarbon systems that are sourced
by marine
rocks and reservoired in weathered crusts and
(or) clastic/carbonate platform rocks. The upper Precambrian
and Paleozoic of east Siberia, the middle Paleozoic of
west Siberia, and the lower Paleozoic of the Tarim Basin are
examples of this hydrocarbon system.
The rift-sag successor basins, which developed on
these welded micro-plates and accretionary wedges after
collision, feature hydrocarbon systems produced from
mostly non-marine
rocks in China and mostly
marine
rocks
in Russia. Example successor basins include the
marine
Jurassic-Cretaceous West Siberian interior sag basin -
formed over several micro-plates; the non-
marine
,
Cretaceous-Tertiary, rift-sag Songliao and North China
basins; and the neogene extensional strike-slip North
Sakhalin Basin.
The compressional basins formed as a result of late
Paleozoic to Cenozoic plate collisions. These basins feature
hydrocarbon systems in marine
and/or non-
marine
rocks
depending on the paleogeographic setting. The best example
is the late Paleozoic-Mesozoic, non-
marine
Junggar
Basin in Northwest China
End_Pages 12 and 13---------------