نتایج جستجو برای: thermobarometry
تعداد نتایج: 187 فیلتر نتایج به سال:
Xenoliths reveal a hot Moho and thin lithosphere at the Cordillera-craton boundary of western Canada
Abstract Properties of the lithosphere control transitions in elevation and plate deformation from hot, mobile orogenic belts to cooler, stronger cratons. The sharp, abrupt boundary North American Cordillera with craton western Canada has been suggested be a result recent (<50 Ma) heating delamination lithosphere. To test this, we queried fine structure thermal history mantle approaching...
Fathabad area is located in northwest of the city of Zarand (Kerman province) in the Posht-e-Badam block of the central Iran structural zone. The Ordovician–Silurian gabbroic stocks have intruded into volcanic-sedimentary rocks of the Rizu series. The gabbros are mainly composed of clinopyroxene, kaersutite, plagioclase and biotite. Electron microprobe analyses demonstrate that the clinopyroxen...
Late Neoproterozoic metamorphic – igneous rocks of the Shotor Kuh complex is located in the northern edge of the Central Iran structural zone. This complex crosscut by several Middle Jurassic diabasic dikes. Plagioclase, pyroxene and biotite are the essential rock-forming minerals of these dikes. Plagioclases have mostly andesine composition (An31-49). Pyroxenes have following compositions: En3...
Current models for elastic geobarometry have been developed with the assumption that host and/or inclusion minerals are elastically isotropic. This has limited applications of thermobarometry to mineral inclusions contained in cubic quasi-isotropic (e.g., garnet). Here, we report a new model takes into account anisotropic properties and relative crystallographic orientation (RCO) host-inclusion...
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