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268.石油
1.
plate tectonic(pt) determines+is the key for us to understand...(deserts and arctic areas> hydrocarbon on E) mention the location of reserves. introduce 4 types of oil holding areas,
2.
oil+gas result <mostly> from rapid burial ....in envrm where...
Lack od O2...
newly ocean basin(formed by ...) provides...
·.·the basins water (moins), .·.lack O2
Eg. GC
3.
the same pt (provide locas and condits for anoxic burial) is responsb for the geo path.
Continental drift+subdctn+collisn+contints →swamps+rivers+climats<impacts
Eg. LSD. particular condition
4.
PT creat "pressure cooker"(that...)
explain the progress<longtemps --deposit.
reasons: hydrocarbon are more buoyant than water,.·.forced to surface.
Other< rifting+collisn between land mass and other T forces can ....( free old oil and gas trap fluids × to the surface)
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