Changes

If in North Africa the basins are mainly related to rift basins followed by passive margin, the accretion of the peri-Gondwanan blocks to the southern margin of Eurasia led to the formation of a major concentration of giant fields along the northern passive margin of the peri-Gondwanan blocks and in the overlying peripheral basins related to their collision. In the southern Caspian Sea area, the giant fields are mainly stored in collision-related basins<ref name=Mannetal_2003 /> whose origin was controlled by the docking of the peri-Gondwanan along the southern margin of Eurasia (e.g., Cimmerian orogeny). A similar origin is suggested for the Northern Caucasus Basins,<ref name=Mannetal_2003 /> whereas a complex history (from cratonic backarc extension and rifting followed by a sag basin stage) is recorded in the Pricaspian Basin.<ref name=Weberetal_2003>Weber, L. J., Francis, B. P., Harris, P. M., and Clark, M., 2003, Stratigraphy, facies, and reservoir distribution, Tengiz Field, Kazakhstan, in W. M. Ahr, P. M. Harris, W. A. Morgan, and I. D. Somerville, eds., Permo- Carboniferous carbonate platforms and reefs: SEPM Special Publication 78 and [http://store.aapg.org/detail.aspx?id=868 AAPG Memoir 83], p. 351–394.</ref>

If in North Africa the basins are mainly related to rift basins followed by passive margin, the accretion of the peri-Gondwanan blocks to the southern margin of Eurasia led to the formation of a major concentration of giant fields along the northern passive margin of the peri-Gondwanan blocks and in the overlying peripheral basins related to their collision. In the southern Caspian Sea area, the giant fields are mainly stored in collision-related basins<ref name=Mannetal_2003 /> whose origin was controlled by the docking of the peri-Gondwanan along the southern margin of Eurasia (e.g., Cimmerian orogeny). A similar origin is suggested for the Northern Caucasus Basins,<ref name=Mannetal_2003 /> whereas a complex history (from cratonic backarc extension and rifting followed by a sag basin stage) is recorded in the Pricaspian Basin.<ref name=Weberetal_2003>Weber, L. J., Francis, B. P., Harris, P. M., and Clark, M., 2003, Stratigraphy, facies, and reservoir distribution, Tengiz Field, Kazakhstan, in W. M. Ahr, P. M. Harris, W. A. Morgan, and I. D. Somerville, eds., Permo- Carboniferous carbonate platforms and reefs: SEPM Special Publication 78 and [http://store.aapg.org/detail.aspx?id=868 AAPG Memoir 83], p. 351–394.</ref>

In the Arabian peninsula, Mann et al.<ref name=Mannetal_2003 /> identified three basin types preserving giant fields: continent–continent collision for the elongate fields along the Zagros Mountain front; passive margin basins of the southern shore of the Neo-Tethys (central Arabian peninsula and Persian Gulf area); and continental rifts with overlying sag basins on the eastern Arabian Peninsula. Source rocks and reservoirs are present at different stratigraphic levels, reflecting a complex interaction of depositional and tectonics events.<ref name=Foxandahlbrandt_2002>Fox, J. E., and Ahlbrandt, T. S., 2002, Petroleum geology and total petroleum systems of the Widyan Basin and Interior Platform of Saudi Arabia and Iraq: USGS Bulletin 2202-E, http://geology.cr.usgs.gov/pub/bulletins/b2202-e.</ref> <ref name=Pollastro_2003>Pollastro, R. M., 2003, Total petroleum systems of the Paleozoic and Jurassic, Greater Ghawar Uplift and adjoining provinces of Central Saudi Arabia and Northern Arabian-Persian Gulf: USGS Bulletin 2202-H, http://pubs.usgs.gov/bul/b2202-h.</ref>

In the Arabian peninsula, Mann et al.<ref name=Mannetal_2003 /> identified three basin types preserving giant fields: continent–continent collision for the elongate fields along the Zagros Mountain front; passive margin basins of the southern shore of the Neo-Tethys (central Arabian peninsula and Persian Gulf area); and continental rifts with overlying sag basins on the eastern Arabian Peninsula. Source rocks and reservoirs are present at different stratigraphic levels, reflecting a complex interaction of depositional and tectonics events.<ref name=Foxandahlbrandt_2002>Fox, J. E., and Ahlbrandt, T. S., 2002, [http://geology.cr.usgs.gov/pub/bulletins/b2202-e Petroleum geology and total petroleum systems of the Widyan Basin and Interior Platform of Saudi Arabia and Iraq]: USGS Bulletin 2202-E.</ref> <ref name=Pollastro_2003>Pollastro, R. M., 2003, [http://pubs.usgs.gov/bul/b2202-h Total petroleum systems of the Paleozoic and Jurassic, Greater Ghawar Uplift and adjoining provinces of Central Saudi Arabia and Northern Arabian-Persian Gulf]: USGS Bulletin 2202-H.</ref>

==See also==

==See also==