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Depositional sequence analysis of plays (view source)
Revision as of 16:27, 25 February 2014
, 16:27, 25 February 2014→Lowstand systems tracts
==Lowstand systems tracts==
==Lowstand systems tracts==
During lowstands of sea level, sedimentation rates are high. Therefore, organic source potential is generally low. Where depositional sites are euxinic, source potential is higher. Even so, total organic carbon rarely exceeds 1%.<ref name=ch21r44>Vail, P., R., 1987, [http://archives.datapages.com/data/specpubs/oversiz2/data/a188/a188/0001/0000/0001.htm Seismic stratigraphy interpretation procedure], in Bally, A., W., ed., Atlas of Seismic Stratigraphy: [http://store.aapg.org/detail.aspx?id=478 AAPG Studies in Geology No. 27], p. 2.</ref> Reservoir sands can be thick because they tend to aggrade as well as prograde.
During lowstands of sea level, sedimentation rates are high. Therefore, organic source potential is generally low. Where depositional sites are euxinic, source potential is higher. Even so, total organic carbon rarely exceeds 1%.<ref name=ch21r44>Vail, P., R., 1987, [http://archives.datapages.com/data/specpubs/oversiz2/data/a188/a188/0001/0000/0001.htm Seismic stratigraphy interpretation procedure], in Bally, A., W., ed., Atlas of Seismic Stratigraphy: [http://store.aapg.org/detail.aspx?id=478 AAPG Studies in Geology No. 27], p. 2.</ref> Reservoir sands can be thick because they tend to aggrade as well as prograde.
[[file:exploring-for-stratigraphic-traps_fig21-37.png|thumb|{{figure number|1}}.]]
==Lowstand systems tract traps==
==Lowstand systems tract traps==