نتایج جستجو برای: oligo miocene

تعداد نتایج: 11250  

Journal: :Geološki anali Balkanskoga poluostrva 2022

The ongoing interest in the complex geology of Dinaric orogen, particular, its immediate, post-orogenic evolution (post-Lutetian), has produced a number tectonic solutions, proposing either extensional stage followed by subsidence, with immense lithospheric thinning resulting regional uplift, or even pure uplift episode(s). unclear Late Oligocene?Miocene forces are often interpreted as intercha...

امینی, صدرالدین, قلمقاش, جلیل, یاجم, ساناز,

Chah Torsh intrusive body in S-W of Nadushan is a small part of extensive magmatism of Oligo-Miocene age in Urumieh-Dokhtar magmatic belt. This is the largest intrusive mass of SW of Nadushan complex which are all outcropped as masses cut through Eocene volcanics. The Chah Torsh intrusion consists of two phases with porphyry and granular textures. Geochemical properties of two phases on the bas...

The Sungun  copper  porphyry deposit is hosted by a Tertiary magmatic complex in  the  Azarbayjan province , northwestern Iran. The  Sungan mine  in its southern and eastern parts is limited  by early Miocene volcanic and by Late Cretaceous limestone rocks in northern and eastern parts respectively . The Sungun  deposit is associated with a suite of porphyritic granitoids and late dikes intrudi...

Journal: :Palaeogeography, Palaeoclimatology, Palaeoecology 2021

The Western Australian margin is a unique coral reef province, with modern development occurring at latitudes as far south 29°S. genesis of this province may go back to the Oligo-Miocene, since geological features ~30 million-year-old and younger interpreted reefs are known from offshore seismic surveys. nature these is, however, uncertain, they only sparsely sampled, time-equivalent outcrops p...

مرادیان شهربابکی, عباس, مرتضوی, سیدمحسن, قدمی, غلامرضا ,

More than 20 tonalitic to granodioritic plutons with Oligo-Miocene age had intruded the Eocene volcanic rocks, in south-east of Urumieh- Dokhtar magmatic belt, north-west of Shahre-Babak. These rocks show granoporphyritic texture and consist of phenocrysts of plagioclases (An21-An44), with normal to reverse zoning, magnesio hornblende and tshermakite and biotites. The matrix consists of fine-gr...

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