... Devonian to Lower Carboniferous Ora Shale Formation, and the lower shaly beds of the Upper Permian Chia Zairi Formation. The main target reservoirs are of Ordovician, Silurian, Carboniferous and Permian ages. Similar reservoirs have recently been reported for the Western Desert of Iraq, eastern Jordan...

...Figure 19: The Ora Shale Formation in the type section (after R. Wetzel, 1950 ) overlies the Kaista Formation and underlies the Harur Formation. R. Wetzel considered the age of the Kaista Formation as either Late Devonian or early Carboniferous (Mississippian). More recent palynology studies...

... sequence is correctly translated from Al-Haba et al. (1994) to be 358 meters (m) thick in Akkas-1, and to correspond to the Kaista, Ora and Harur formations. In their original figure the section is shown as Tournaisian to Namurian and to consist of sandstone and shale. Also in Figure 2...

... differences in deformation style as a function of lithology, this study focuses on the progressive development of flexural-slip horizons and fabric development in extensional settings. Deformation in the intercalated shale, siltstone, carbonate, and gypsum beds of the Turonian Ora Formation is dominated...

...Figure 2 Geologic column. Note the Ora formation (about 110 m thick) within a sedimentary sequence (1500 m thick). As described in the right-hand column, the Ora formation includes an upper shale unit (~30 m thick), a middle carbonaceous unit (~20 m thick), and a lower shaly unit (~60 m thick...

... grainstone (IRb), (3) fossiliferous wackestone-packstone (MRa), (4) massive to bedded chert (MRb), (5) spiculitic wackestone-packstone (MRc), (6) silty mudstone-wackestone (ORa), (7) glauconitic siltstone-sandstone (ORb), and (8) shale (ORc). The eight lithofacies are grouped into three facies associations...

... with carbonaceous clays and muds (Text-Figures 2 , 3 ). These sediments span the boundary between the Nanafalia and Tuscahoma formations of the Wilcox Group. There are no diagnostic marine fossils such as calcareous nannoplankton or planktonic foraminifera to date these deposits. If the Red Hills Mine succession...

.... It lies near the base of a major cycle of mafic to ultramafic volcanics, which is separated from underlying cycles by thin units of banded iron formation, carbonaceous shale and chert ( Hronsky et al. , 1990 ). Locally the deposit is hosted by carbonaceous schist and minor basalt and dolerite...

... ) in the Jauf, Qasim, and Tabuk areas in Saudi Arabia, Oman, and southwestern and central Iran. Lithology key boundary ages as in Figure 5 . The Lower Silurian shales of the Ghakum Formation ( Figure 7 , Appendix 1) occur at Kuh-e-Faraghan near Bandar Abbas in the Zagros Mountains (A. Allison, 1937...

... of 1st bed below GYP 53 L. Cenomanian 94±3 GYP 53 13280/00815 yellow marl Hazera Tamar 2 m below top of Mbr. L. Cenomanian 94±3 GYP 54 13275/00845 light coloured clayey 1st Ora Shale Lower 1 m above base of Mbr. L. Cenomanian 94±3 There was no significant difference...

... of clastic sediments, that is, sandstone and shale. Possible source rocks of the Paleozoic petroleum system consist of several dark-shale intervals, including the regionally widespread Silurian Akkas hot shale, in addition to those of the Ordovician Khabour and Ora formations ( Al-Juboury and Al-Hadidy, 2009...