نتایج جستجو برای: metabasite

تعداد نتایج: 40  

Journal: :Minerals 2022

The Fragnè mine, located in the Lanzo valley municipality of Chialamberto (Turin, Piedmont Region), represented most important regional site for Fe–Cu sulfide exploitation over a period more than eighty years (1884–1965). entire mining area is part structural complex Lower Unit Western Alps, characterized by presence amphibolite, metabasite (“prasinite”), and metagabbroic rocks. In particular, ...

Journal: :Minerals 2021

Greenschist facies metabasite (chlorite schist) and metasediments (banded iron formation (BIF)) in the Wutai Complex, North China Craton recorded extensive fluid activities during subduction-related metamorphism. The pervasive dolomitization chlorite schist significant dolomite enrichment at BIF–chlorite interface support existence of highly channelized updip transportation CO2-rich hydrotherma...

Ghasemi, habiballah, Lambrini, Papa, Rezaei, Mojgan, Sadeghian, mahmood,

Do-Chah metamorphic-igneous complex is one of the Iranian crystalline basement complexess which is located in the SE Shahrood in northern edge of Central Iran structural zone. This complex includes a wide compositional range of metamorphic rocks such as metabasite, metapelite, metacarbonate and metapsammite, and meanwhile is host of leucogranite and biotite granite intrusions. Protolith of meta...

نوربهشت, ایرج, خلیلی, محمود , داودیان دهکردی, علیرضا , محجل, محمد ,

The metabasite rocks from north of Shahrekord, which is a part of structural zone of Sanandaj-Sirjan, are undergone medium temperature – high pressure metamorphism (eclogite facies). These rocks then were subjected to a retrograde metamorphism (amphibolite facies). A distinct compositional zoning is preserved in fresh garnets which are formed during eclogite facies. The compositional or growth ...

Journal: :Geosciences 2023

The Portofino Conglomerate (PC) cropping out in the Eastern Liguria is an approximately 500 m thick, very gently folded succession mainly composed of poorly bedded and mostly matrix-supported conglomerates. It stratigraphically rests on Helminthoid Flysch (UA3) thrusted onto Antola Unit. We vertically distinguished three ruditic litho/petrofacies: (i) Paraggi (fP) with carbonate clasts from suc...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان - دانشکده علوم 1388

چکیده ندارد.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده علوم پایه 1391

abstract the balvard metamorphic assemblage (bma) crops out at the northeastern margin of the southeastern part of the sanandaj-sirjan zone (ssz) in contacting to the dehshir-baft ophiolitic mélange. this location prepared a special situation to resolve some of the complicated tectonic problems of this part of iran. petrology, micro-tectonics and satellite image investigation were carried out ...

Journal: :Frontiers in Earth Science 2022

Since the early Cenozoic, closure of Alpine Tethys in Western Mediterranean has been accomplished by protracted subduction, followed collision and orogenic collapse. The internal zones Betic Cordillera (southern Spain) Rif (northern Morocco) experienced subduction metamorphism subsequent exhumation due to westward migration system. detrital provenance these meta-sedimentary units contains cruci...

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