Within the areas of Ulakhan-Kurung-Yuryakh and Bestyakh Malo-Botuobinsky district, in Syuldyukar kimberlite field Ygyattinsky carbonate-terrigenous deposits Upper Cambrian period revealed signs ancient formation-oxidation gray-colored coal-bearing, terrigenous carbon-Permian deposits, fractured commonly found on rocks underlying carboniferous weather crust. The data distribution correlation U T...

The Gucheng region is oil and gas accumulation area of Tarim Basin，dominated by beach controlled lithologic reservoirs，which has superior conditions broad exploration prospects. lower Paleozoic strata in the are Carboniferous, Ordovician, Cambrian systems from top to bottom. Silurian, Devonian, Permian missing. Ordovician – main target layers area. There four reservoirs: group, Yingshan Penglai...

The availability of nutrients and the quantity and quality of food at the base of food webs have largely been ignored in discussions of the Phanerozoic record of biodiversity. We examine the role of nutrient availability and phytoplankton stoichiometry (the relative proportions of inorganic nutrients to carbon) in the diversification of the marine biosphere. Nutrient availability and phytoplank...

Shifts in the taxonomic composition of Paleozoic communities are commomly ascribed to selective extinctions. Suppression realized speciation rates owing shrinkage available adaptive space (lowering potential niche number), even though unselective, results differential diversity losses, greatest losses being sustained by clades with highest and extinction (the high-turnover caldes). The resultin...

Since shale gas mainly occurs in pores, research on pore structure characteristics is the key to understanding accumulation mechanism. The of Lower Carboniferous Dawuba Formation Qianxi area, represented by well QSD-1, which obtains a daily flow 10,000 m3 and represents an important breakthrough investigation marine Upper Paleozoic region southern China, characterized high-pressure mercury comp...

The Ancient Pacific Margin NATMAP project (Thompson et al., 2000) is a collaboration between the British Columbia Geological Survey Branch, the Geological Survey of Canada and the Yukon Geoscience Office. It aims to advance understanding of the Cordillera-long belt of complexly deformed pericratonic rocks that made up the Pacific margin of North America in Paleozoic to early Mesozoic time (Figu...

Marine red beds (MRBs), also known as oceanic (ORBs), are reddish colored sediments deposited within the marine realm that have been stained during deposition and/or early diagenesis because of changes in ocean water chemistry response to paleoceanographic and paleoclimatological factors. Although common throughout Phanerozoic, mostly investigated Upper Cretaceous successions CORBs (Cretaceous ...