نتایج جستجو برای: middle eocene

تعداد نتایج: 158502  

Journal: :Folia primatologica; international journal of primatology 1998
D T Rasmussen K A Nekaris

We integrate information from the fossil record, morphology, behavior and molecular studies to provide a current overview of lorisoid evolution. Several Eocene prosimians of the northern continents, including both omomyids and adapoids, have been suggested as possible lorisoid ancestors, but these cannot be substantiated as true strepsirhines. A small-bodied primate, Anchomomys, of the middle E...

Journal: :Basin Research 2021

The Late Cretaceous to Cenozoic is known for its multiple inversion events, which affected Central Europe's intracontinental sedimentary basins. Based on a 2D seismic profile network imaging the basin fill without gaps from base Zechstein seafloor, we investigate nature and impact of these events salt structures in Baltic sector North German Basin. These insights improve understanding structure...

Journal: :Gondwana Research 2022

The Andaman and Nicobar ophiolites, in the forearc of western Sunda subduction zone, underwent enigmatic, rapid Cenozoic vertical motions: shallow-water sediments with abundant arc debris characterize middle Paleocene–middle Eocene are under- overlain by significantly deeper sediments. Recent paleomagnetic results revealed a near-equatorial paleolatitude West Burma Block associated at similar l...

Journal: Journal of Tethys 2017

The origin and geodynamic setting of the Maden Complex, which is situated in the Bitlis–Zagros Suture Zone in the Southeast Anatolian Orogenic Belt, is still controversial due to lack of systematic geological and geochemical data. Here we present new whole rock major–trace–rare earth element data from the Middle Eocene volcanic rocks exposed in Maden Complex and discuss their origin in the ligh...

Emamjomeh, , Jahangiri, , Moazzen, ,

Sub-volcanic diorite and granodiorite intrusive bodies (Middle Eocene) and dome shaped rhyolite have intruded into Lower to Middle Eocene volcanic rocks in Torud-Chah Shirin magmatic segment. The granodiorite plutons and rhyolitic dome host turquoise and gold mineralization in Damghan mine. Intrusive bodies display characteristics of high potassium CA and meta-aluminous (diorite and some of gra...

Journal: :Journal of Systematic Palaeontology 2021

Maomingosuchus acutirostris sp. nov. is a new tomistomine crocodile from the middle–upper Eocene deposits (late Bartonian–Priabonian age, 39–35 Ma) of Na Duong Basin in northern Vietnam. M. can be differentiated type species petrolicus by having an acute anterior tip premaxilla. Both differ another Krabi (Thailand) differences surangular–dentary suture and maxillary alveoli. According to our ph...

Journal: :Turkish Journal of Earth Sciences 2022

Modal analysis of sandstones for conglomerate rich marine basins is useful investigating the provenance types surrounded by plate tectonics. Different kinds siliciclastic rocks are important indicators defining paleogeography and geotectonic conditions sedimentary basin analysis. This paper, which focuses on petrography turbidite systems, one rarest studies characteristics in scientific literat...

Journal: :Journal of Hymenoptera Research 2021

A new species, Formica ribbeckei Radchenko & Perkovsky, sp. nov. , is described based on four workers from late Eocene Rovno amber (Ukraine). It most resembles F. flori Mayr, 1868 but differs the latter mainly by 5-segmented maxillary palps with preapical segment subequal in length to apical one, and shorter first funicular segment. Fossil luteola Presl, 1822, trigona macrognatha 1822 q...

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