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Epithermal vein and carbonate replacement mineralization related to caldera development, Cunningham Gulch, Silverton, Colorado
Epithermal vein and carbonate replacement deposits in Cunningham Gulch are located within the western San Juan Tertiary volcanic field in southwestern Colorado. The Pride of the West epithermal vein system is hosted ...
The role of bacteria in the deposition and early diagenesis of the Posidonienschiefer, a Jurassic oil shale in southern Germany
The Jurassic (Toarcian) Posidonienschiefer of southern Germany is famous for its well preserved vertebrate fossils and its high organic content. The majority of the Posidonienschiefer (10 meters thick in the study area) ...
Petrography, northern Davis Mountains, Trans-Pecos, Texas
The northern Davis Mountains are composed of Tertiary volcanic rocks of the group. This group, resting unconformably on southward dipping Cretaceous strata, contains a basal conglomerate and 1,500-2,000 feet of alternating ...
Geology of Chinati Peak Quadrangle Trans-Pecos Texas
In the Chinati Mountains, Presidio County, Texas, a stratigraphic sequence of more than 15,000 feet of Paleozoic, Mesozoic, and Cenozoic rocks is exposed. Of five Paleozoic formations, aggregating 8,000 feet, the Cieneguita ...
The hydrogeology of the Davis Mountains, Trans-Pecos, Texas
The Davis Mountains, located in the Trans-Pecos region of Texas, are comprised of Tertiary volcanics and associated volcaniclastic facies of the McCutcheon Series. The study area covers approximately 3200 square miles and ...
The effects of viscous crossflow on sharp front displacements in two-layered porous media
The effects of viscous crossflow may play an important role in the overall displacement of oil by water. This work seeks not only to determine when viscous crossflow is important but also to calculate its effects on vertical ...