Microfacies Analysis of Berriasian–Hauterivian Carbonates, Central Saudi Arabia
Hisham T. Shebl, Abdulrahman S. Alsharhan, 2000. "Microfacies Analysis of Berriasian–Hauterivian Carbonates, Central Saudi Arabia", Middle East Models of Jurassic/Cretaceous Carbonate Systems, Abdulrahman S. Alsharhan, Robert W. Scott
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The deposition of the Lower Cretaceous in Saudi Arabia is interpreted within the framework of a model of a simple eastward–dipping carbonate ramp that formed as the result of the extensive flooding of the Arabian Plate during Early Berriasian time. Carbonate deposition was only slightly interrupted by a minor marine regression after the deposition of the Yamama Formation, and it was succeeding by bioclastic limestones of the Buwaib Formation. It was later terminated by a Barremian regression during which clastic deposition dominated most of Central and Eastern Arabia.
The Early Cretaceous carbonates of the Sulaiy, Yamama, and Buwaib formations crop out in central Saudi Arabia. According to sedimentological and paleontological data these formations consist of twenty–two successive microfacies correlated with the published standard microfacies types and belts. The Sulaiy, Yamama, and Buwaib formations were deposited in open–platform and lagoonal settings interrupted by two breaks in sedimentation: (1) a pre–Buwaib disconformity, which is marked by an abrupt change from the fine–grained lime mudstones of the upper Yamama to the sandy wackestones containing cyclamminids of the basal Buwaib, and (2) the more pronounced unconformity between the Buwaib bioclastic wackestone and the overlying Biyadh Sandstone.
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Middle East Models of Jurassic/Cretaceous Carbonate Systems
This volume will interest tectonic modelers, stratigraphers, sedimentologists, and explorationists. It is the product of the international conference of “Jurassic/Cretaceous Carbonate Platform-Basin Systems, Middle East Models” that was convened in December 1997 jointly by SEPM (Society for Sedimentary Geology) and the United Arab Emirates University in Al Ain, United Arab Emirates. The twenty-three papers present new data and interpretations arranged in three sections: 1) sequence stratigraphy, cyclostratigraphy, chronostratigraphy, and tectonic influences, 2) depositional and diagenetic models of carbonate platforms, and 3) hydrocarbon habitat and exploration/development case studies. New tectonic models of the Arabian Basin, new stratigraphic and sequence stratigraphic reference sections, new geochemical and source rock data, and new reservoir data are presented. New geologic models make this set of papers relevant to geoscientists working outside of Arabia also.