نتایج جستجو برای: litho
تعداد نتایج: 244 فیلتر نتایج به سال:
Territory is a complex notion whose definition varies depending on the discipline in which it applied. Research of territory has often focused Palaeolithic. Studies this field are mainly based comparisons between archaeological assemblages and ethnographic data, an approach originating from work L.R. Binford, who introduced concept mobility, leading to various models spatial occupation. How hav...
Abstract The Mesoproterozoic MARA terrane of western South America is a composite igneous-metamorphic complex that important for Paleozoic paleogeographic reconstructions and the relative positions Laurentia Gondwana. magmatic detrital records are consistent with Laurentian origin; however, metamorphic deformation lack sufficient detail to constrain correlation units within timing mechanisms ac...
Rivers are dynamic and sensitive systems that change their chemical composition from source to mouth. This is due the influence of a set variables controlled by hydro-litho-eco-atmospheric processes anthropic pressures which are, in turn, affected catchment attributes. work proposes new way thinking about river geochemistry focused on environmental interconnections rather than single variables....
Deinotheres (Proboscidea, Deinotheriidae) are a clade of non-elephantiform proboscideans that originated in Africa and dispersed into Eurasia by the early Miocene. In Europe, deinotheres first recorded Greece during MN3, although they did not become common faunal element throughout Europe until MN4. Early Miocene (MN3–MN4) deinothere remains from generally assigned to different species (Prodein...
Abstract The present work aims to investigate the reservoir characterizations of Lower Cenomanian Baharyia Formation by creating isoparametic maps calculate petrophysical parameters and detect favorable parts for oil accumulations using available well logging data. is one main hydrocarbon sandstone reservoirs in northern Western Desert Egypt. About 90% field produces form Formation. This has be...
Mississippi Valley Type (MVT) 1 deposits represent the majority of carbonate-hosted Zn–Pb globally. They typically form in an extensional tectonic setting along passive margins. However, studies on Sichuan–Yunnan–Guizhou Triangle area (SYGT) reveal differences terms essential features typical MVT deposits. We discuss main these deposits, controlled by folds and faults, high-grade ores symbiotic...
Abstract Tandem in situ and isotope dilution U-Pb analysis of zircons from pyroclastic volcanic rocks both glacial non-glacial sedimentary strata the Pocatello Formation (Idaho, northwestern USA) provides new age constraints on Cryogenian glaciation North American Cordillera. Two dacitic tuffs sampled within glacigenic lower diamictite interval Scout Mountain Member yield high-precision chemica...
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