نتایج جستجو برای: tectonic setting

تعداد نتایج: 260849  

Journal: :Journal of The Indian Association of Sedimentologists 2021

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Journal: :Atlantic Geology 1989

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ژورنال: بلورشناسی و کانی شناسی ایران 2019
شکاری, سکینه, صادقیان, محمود, قاسمی, حبیب الله , مینگو, جای ,

Late Neoproterozoic metamorphic – igneous rocks of the Shotor Kuh complex is located in the northern edge of the Central Iran structural zone. This complex crosscut by several Middle Jurassic diabasic dikes. Plagioclase, pyroxene and biotite are the essential rock-forming minerals of these dikes. Plagioclases have mostly andesine composition (An31-49). Pyroxenes have following compositions: En3...

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ژورنال: بلورشناسی و کانی شناسی ایران 2014
سبزه‌یی, مسیّب, نوری خانکهدانی, کمال,

Bondono granite-gneiss body is located in the core of Toutak anticline, located 200 km NE of Shiraz. This granitoid mass, which is a part ofToutak metamorphic complex, is exposed on the Sourian sheet. Petrological studies determined that the mentioned rocks are placed in orthogneiss field. Based on current studies, the geochemical, tectonic setting and geochronology characteristics of the Bondo...

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Journal: :Atlantic Geology 2003

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Journal: :GFF 2018

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Journal: :Scientific Reports 2015

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Journal: :Studia Universitatis Babes-Bolyai, Geologia 2000

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Journal: :Lithos 2021

The voluminous Triassic magmatism within the Lhasa Terrane, Tibetan Plateau, has been studied for decades yet petrogenesis of magmas involved and tectonic setting this associated events remain uncertain. This study presents new zircon U–Pb geochronological, Lu–Hf isotopic, whole-rock geochemical data Middle volcanic rocks southern region terrane. Zircon dating three samples from area yield cons...

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1998
Alastair H.F. Robertson Achim Kopf

Mud volcanism was initiated when overpressured muds rose through the Mediterranean Ridge accretionary prism. Early mud volcanism was marked by eruption of coarse clastic sediments forming small cones of debris flow deposits and turbidites, followed by eruption of large volumes of clast-rich matrix-supported debris flows. Eruption was accompanied by progressive subsidence to form moat-like featu...

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