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...ith evidence for anoxic ([[:File:Paleogeographic setting of the restricted Irati-Whitehill Sea.jpg|Figure 1]]).<ref name=Lavina_E._L.,_1991>Lavina, E. L., 1 ...d into the Taquaral and Assistencia Members ([[:file:Sedimentary cycles of Irati Formation .png|Figure 2]]), according to Milani<ref name=Milani_2007a>Milan

An oil shale is defined as a fine-grained sedimentary rock that contains a high proporti ...Uintah Basin, Utah. Courtesy of [http://etv10news.com/first-commercial-oil-shale-mine-in-nation-to-be-housed-in-utah/ eTV10 News].]]

...cellus Shale in the Appalachian Basin and shales within the Permian Basin. Shale liquids production is down by around a million bpd to approximately 7.1 mil ...pment and production front, new enhanced oil recovery approaches for tight shale reservoirs are being more widely implemented. Natural gas or CO2 injection

...ium [[grain size]], intercalated with thinner siltstone and muscovite rich shale, emphasizing the laminated aspect of that interval. Herringbone cross-strat ...s with stratifications reworked by waves, and black laminated carbonaceous shale, which is an important marker for stratigraphic correlation in the subsurfa