Buried river valleys from the Neogene–Quaternary time are widespread throughout Middle Volga region of Russian Plain. They have been studied for a long period, since 1940s, with last major generalizations dating back to 1980s. This paper presents new results based on GIS mapping using materials state geological study in 1960–1970, 1984–1996 and 2000–2002. On whole, pattern buried valley network...

The classic Neotethyan Ankara Melange formed within the Triassic-Eocene İzmir-Ankara-Erzincan ocean (‘N Neotethys’), bordered in central Anatolia by Kırşehir and Tauride-Anatolide continental units to south discontinuous Sakarya continent northwest. Farther north, separate Intra-Pontide probably remained partly open until early Cenozoic. developed via phases of intra-oceanic accretion (mainly p...

An approximately 3500 m thick stratigraphic section was detailed surveyed in order to study the tectono-sedimentary evolution of Ñirihuau Formation along Arroyo Las Bayas, northern sector basin, North Patagonian Andes. A total amount 29 lithofacies were recognized and used define facies, grouped into six facies associations (FA) that reflect different paleoenvironments: FA1 (Gray brownish congl...

Large-winged blattoids of the Middle to Late Pennsylvanian reveal a striking appearance, diversification, and decline in fossil record. Among them, families Necymylacridae Durden, 1969, Gyroblattidae as well mylacrid genus Opsiomylacris exhibit, largest pre-Cenozoic with forewing lengths up 7.5 cm. As finds from coal-bearing sedimentary basins Europe, North Africa, America indicate, these giant...

The pyroclastic rocks of "The Crater", South Island, New Zealand belong to the Miocene, alkaline basaltic Dunedin Volcanic Group and represent an individual eruptive center with possible multiple vents. Three pyroclastic units have been separated at the study area based on textural and compositional features as well as their stratigraphic positions. The central part of The Crater comprises basa...

Abstract The tectonic evolution of the South China Sea is closely associated with multiple subduction-collision processes in Southeast Asia. When collision Dangerous Grounds terrane Sabah-Palawan Islands terminated debated due to poor age constraints at southern margin Sea. A deep well drilled on Meiji Atoll penetrates Cenozoic carbonate strata central Grounds. Robust strontium isotope ages and...

Paleogeographic maps represent the ultimate synthesis of complex and extensive geologic data express pictorially hypothetical landscape some region during a given time-slice deep time. Such maps, presented as paired paleogeographic paleotectonic reconstructions, have been developed to portray history greater Arctic over past 400 million years. Collectively they depict four major episodes in dev...

Numerous important Miocene and early Pliocene epithermal Au-Ag deposits are present in the northern Great Basin. Most deposits are spatially and temporally related to two magmatic assemblages: bimodal basaltrhyolite and western andesite. These magmatic assemblages are petrogenetic suites that reflect variations in tectonic environment of magma generation. The bimodal assemblage is a K-rich thol...

Two North American fossil species of large felids, hitherto regarded as Late Cenozoic pumas (mountain lion), are in fact closely related to the living cheetah, Acinonyx, of Africa and Eurasia. A new subgenus (Miracinonyx) is proposed for the American species. Cheetahs and pumas may have had a common ancestor in the Miocene of North America.