نتایج جستجو برای: sabzevar ophiolite

تعداد نتایج: 1506  

Journal: :International Geology Review 2022

As relics of oceanic lithosphere, ophiolites exposed in the East Kunlun region are crucial for deciphering evolution from Proto-Tethys to Paleo-Tethys. Two ophiolite belts have been recognized Orogenic Belt: northern Heishan-Dagele-Qingshuiquan Ophiolite Belt and southern Muzitag-A’nyemaqen Belt. Most basaltic rocks belt show apparent geochemical features enriched mid-ocean ridge basalts, with ...

Journal: :iranian journal of earth science 0
jamal tarrah islamic azad university, bandar abbas branch, geology department, bandar abbas, iran

specific elements (cr, al, ca, and si) and loss on ignition (loi) were used for semi-quantitative determination of the normative mineralogical composition of naturally occurring chromium ores in ophiolite complexes. by far the occurring ore minerals are complex both from the mineralogical and chemical viewpoints. the secondary minerals serpentine and cr-containing chlorite (kaemmererite) form n...

Journal: :journal of tethys 0

the lithologies of regions, which located near the collision zone, are very different from other geology setting. mapping in these areas needs extensive and exact studies and tools because of the variety of rocks, intensive tectonic uplift and complicated units. hyperspectral sensor is one of the most advanced tools with hundreds of bands that each measures a very narrow range of wavelengths an...

2015
Bibi Leila Hoseini Zahra Miri Kalateh Sadati Mohammad Hassan Rakhshani

INTRODUCTION The neonatal mortality rate (NMR) is an essential index in the assessment of community health. With the rapid advancement of neonatal care, the causes of death in this group and the overall mortality rate have changed. For these reasons, the aim of this study was to determine the current NMR and its causes in Sabzevar City's Neonatal Intensive Care Unit (NICU). METHODS This cross...

Journal: :Journal Of Geophysical Research: Solid Earth 2021

The northern Oman margin is a key area for understanding the emplacement of Semail Ophiolite and obduction processes in general. This study uses grid 2D-multichannel seismic lines tied to well data characterize offshore domain reappraises post-obduction history margin. West Muscat, Sohar basin, late Cretaceous Paleogene tectonic mega-sequence records syn- late-obduction stages deposition erosio...

2002
A. Hassan Ahmed Shoji Arai

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...

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