نتایج جستجو برای: ophiolitic
تعداد نتایج: 353 فیلتر نتایج به سال:
The ultramafic portions of the Proterozoic ophiolite, Eastern Desert, Egypt, contain significant chromitite concentrations that are mainly located in the central and southern parts of the Eastern Desert as small and irregular bodies within a fully serpentinized dunite and harzburgite. Chromitite spinel exhibits a wide range of composition from high Cr to high Al varieties. The Cr# of chromian s...
The discovery of ultrahigh pressure (UHP) minerals in orogenic belts has revolutionized our understanding subduction and the return flow previously deeply subducted material to Earth's surface as part cycling interaction crustal mantle systems. One class UHP is found inclusions peridotite-hosted podiform-chromite systems, within Phanerozoic ophiolites ophiolitic mélanges. Such have opened a win...
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 ...
the neogene intrusion masses in the noudeh-enghelab area located to the north of sabzevar ophiolite have cut the late cretaceous ophiolitic rocks, sedimentary- volcanic and eocene volcanic rocks and have been covered by pliocene and quaternary deposits. the margin is of lava with basalt, phyric andesite-basalt and andesite and the central parts (dome shaped) composed of phyric andesite-trachyan...
Hurricane Matthew affected the eastern region of Cuba from October 4th to 5th causing large damages and numerous landslides. This research presents an inventory landslides triggered by hurricane. Visual interpretation satellite images moderate resolution Sentinel 2A instrument localized higher provided PlanetScope, as well field were main sources information. The resulting landslide was compare...
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