نتایج جستجو برای: tethys
تعداد نتایج: 784 فیلتر نتایج به سال:
How can the sluggish, long-wavelength mantle convection be expressed by so many time and space scales of morphotectonic activity? To investigate these relationships, we explore Java-Banda subduction zone, where geodynamic records cluster. In far-East Tethys, exceptionally arcuate Banda zone circumscribes deepest oceanic basin on Earth, seismotectonic activity slices upper plate more efficiently...
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 ...
A total 7 species and 13 genera of marine gastropod assemblages are reported for the first time from the Varehh Zard section (Asmari Formation), north of Pole Dokhtar, Lorestan Basin. The section under study, the Asmari Formation, lies between the Shahbazam Formation at the base and Gachsaran Formation at the top. According to the distribution of index foraminifera, the Asmari Formation is Earl...
Introduction: The North Qilian orogenic belt, as the Northern branch of original Tethys tectonic domain, is important for reconstructing evolution ancient Tethys. However, history belt remains controversial. This study addresses this issue from a geochemical perspective. Methods: In study, comprehensive analysis geochronology, whole-rock geochemistry, clinopyroxene mineral zircon Ti crystalliza...
there are three different basic dykes in the northeast of golpayegan area, central part of sanandaj-sirjan zone (ssz) including: mylonitic gabbros (group 1), alkali dioritic-basanitic dykes (group 2) and alkali monzogabbroic to monzodioritic dykes (group 3). group 2 and 3 cut post-collisional rocks and are related to after subduction processes of neo-tethys. geochemistry characteristic of studi...
a total 7 species and 13 genera of marine gastropod assemblages are reported for the first time from the varehh zard section (asmari formation), north of pole dokhtar, lorestan basin. the section under study, the asmari formation, lies between the shahbazam formation at the base and gachsaran formation at the top. according to the distribution of index foraminifera, the asmari formation is earl...
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