نتایج جستجو برای: sanandaj sirjan
تعداد نتایج: 1071 فیلتر نتایج به سال:
The structural analysis of large intracontinental wrench faults is fundamental for deciphering the long-term evolution continental crust in complex areas terms their geodynamic and large-scale crustal block displacements. In this contribution, we demonstrate a pre-Miocene dextral activity present-day left-lateral Great Kavir - Doruneh Fault System (GKDFS, Central Iran), one major active strike-...
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 ...
for the first time, an unusual assemblage of talc-phengite-chlorite-k-feldspar was found in quartz schists from the sanandaj-sirjan zone in the nahavand area in western iran. the talc-bearing quartz schists occur as small bodies or lenses within pelitic schist layers and contain talc, phengite, chlorite, k-feldspar and quartz as major mineral constituents with subordinate amounts of calcite ...
The Marivan granitoid body of the northern Sanandaj–Sirjan Zone (N-SaSZ) northwest Iran was emplaced into Cretaceous sediments, and is associated with minor amounts iron skarn-type mineralization along contact between intrusion surrounding country rocks. granitoids within include (hornblende-rich) diorite, granodiorite, granite phases, zircon U–Pb dating four samples from this indicate they wer...
The uniaxial compressive strength (UCS) and Youngs’ modulus (E) of rock are important parameters required during design stability analysis mining geotechnical structures. There is correlation between UCS E rock, the proper estimation such for reliable engineering analysis. However, limited quantity data pairs often available most project sites makes it difficult to estimate E. This study addres...
The Malayer-Boroujerd-Shazand district (approximately 70 km long) is located in the Sanandaj-Sirjan zone with NW-SE trending, and consist mainly of hornfels, schist, phyllite, migmatite, granite and granodiorite which contain numerous pegmatite and aplitic dykes. Among these rocks, granodiorite, hornfels and schist are main host rocks for quartz, feldspar, muscovite and tourmaline bearing pegma...
the aim of this study is prospecting of iron and manganese in the balvard 1:100000 sheet which is situated in sanandaj - sirjan structural zone utilizing index overlay and fuzzy logic methods in the gis. in this study, the layers for integration, alterations, geological, geophysical, geochemical and structural data based on stream sediments, airborne magnetometeric and remote sensing studies. b...
The Kangareh gabbro body is located in south of the Kurdistan Povince and southwest of the Qorveh area. The area belongs to the Sanandaj-Sirjan zone. Tectonic evolutions during Mezozoic and magmatism, due to subduction of the Neo-Tethys oceanic lithosphere beneath the Iran microplate, led to formation of various igneous bodies in this area. Chemical analysis of pyroxene minerals and whole rock ...
Garnet amphibolite is a member of the Hamedan regional metamorphic rocks (the Sanandaj-Sirjan zone). The present study is the first report of mineral compositions and P-T condition of the Hamedan region area garnet amphibolites. The garnet amphibolites can be divided into two varieties based on their mineral assemblages including epidote garnet amphibolite and biotite garnet amphibolite. Elect...
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