Occurrence of Biogenic Steranes and Pentacyclic Triterpanes in an Eocene Shale (52 Million Years) and in an Early Precambrian Shale (2.7 Billion Years): a Preliminary Report* by A. L. Burlingame, Pat Haug, Theodore Belsky, and Melvin Calvin
نویسندگان
چکیده
منابع مشابه
Future of the World Oil Market with an Expanding Role of Shale Oil: A System Dynamics Approach
In this paper, we develop a dynamic system model to predict the effects of shale oil production on demand and supply of oil. We study the interaction between demand and supply of OPEC and non-OPEC member countries and supply of shale oil, oil price, growth of the global economy, development of new oil reserves and alternative energies. In our model, OPEC acts passively and covers the market d...
متن کاملKUSHK ZINC-LEAD DEPOSIT A TYPICAL BLACK-SHALE-HOSTED DEPOSIT IN YAZD STATE, IRAN
Kushk zinc- lead deposit is located about 167 km east of the city of Yazd, Iran. The geographical location of the mine is 31°, 40' N and 55", 40' E. Different rock types including volcanics and subvolcanics (rhyolites, rhyodacites, dacites, and rhyolitic tuffs) and sedimentary rocks (shale, limestones and dolomites) crop out in the area. Mineralization of the deposit occurs in black shale o...
متن کاملEconomic Appraisal of Shale Oil Production
The security, political and economic impacts of shale oil and gas, has changed the supply side of international energy market. Different countries are looking for feasible technology of shale oil production. In this paper after studies on the technical and economic aspects of shale oil production, we studied on the CAPEX and OPEX of shale oil production in a feasibility study framework in order...
متن کاملA Carboniferous Non-Onychophoran Lobopodian Reveals Long-Term Survival of a Cambrian Morphotype
Lobopodians, a nonmonophyletic assemblage of worm-shaped soft-bodied animals most closely related to arthropods, show two major morphotypes: long-legged and short-legged forms. The morphotype with stubby, conical legs has a long evolutionary history, from the early Cambrian through the Carboniferous, including the living onychophorans and tardigrades. Species with tubular lobopods exceeding the...
متن کاملنرخ هستهبندی و رشد بلورهای پلاژیوکلاز و پیروکسن در سنگهای آندزیتی و بازالتی منطقه عباس آباد، شرق شاهرود
The Kahak- Abbasabad Eocene magmatic belt is situated in the northeast edge of Central Iran Zone and extended from Davarzan in the west of Sabzevar to Mayamey in the east of Shahrood. Rock units of the study area include an alternation of basic- intermediate volcanic rocks (olivine basalt, basalt, Trachybasalt, trachyandesitic basalt, trchyandesite and andesite) and pyroclastic–sedimentary rock...
متن کامل