نتایج جستجو برای: orogeny
تعداد نتایج: 771 فیلتر نتایج به سال:
The Aravalli-Delhi Mobile Belt (ADMB) in the northwestern part of Indian Shield represents final stage a complex tectonic evolution witnessed by recognition three distinct orogenies that have resulted northwestward accretion terranes belonging to Archaean Neoproterozoic ages. In this contribution, review deformation structures different is discussed with their implications and global correlatio...
The Zagros orogeny in Iran is associated with two successive geodynamic events during the Tertiary period, a Paleogene NE-directed regional crustal extension followed by a Miocene NW-directed regional crustal extension and a magmatic flare-up. The current study was undertaken to reanalyze previous structural work developed on the extensional Chapedony metamorphic core complex in Central Iran ex...
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...
Dioritic plutons and pinkish alkali-feldspar granitic dikes of Kalateh area (northwest of Khur city) intruded in Neoproterozoic basemental of Jandagh- Arousan complex. Field observations, petrography and geochemical studies indicate that these intrusive rocks have I-type nature and belong to medium-high K calc-alkaline granitiods and also have genetically relationship with each other. Their par...
To investigate the characteristics of Paleozoic magmatism in Central Iran, the volcanic rocks from some area like Abyane, Zefreh, Bagherabad and Dalmeh have been studied and have been compared to another area like Jahagh and Polekhavand. The volcanic horizon occurred as lava flows with massive and pillow structures and intermittent with several sediments layers such as sandstones and carbonate...
The Tommy Creek Domain is a complex, yet little studied, terrane in the Eastern Subprovince of Mount Isa Province, northwest Queensland Australia. In this study, we take advantage modern low-cost and rapid geochronology techniques to undertake an iterative dating approach integrated with detailed fieldwork define ages extents numerous lithologies units Domain. This includes some not previously ...
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