نتایج جستجو برای: granitic layer

تعداد نتایج: 284442  

2006
Diane R. Smith Calvin Barnes William Shannon Robert Roback Eric James

I Circa 1.1 Ga granitic magmatism in Texas was manifested as two compositional groups: (1) the 1.12 Ga Red Bluff granitic suite in west Texas; and (2) 1.12-1.07 Ga granites of the Llano uplift of central Texas. Both suites share some characteristics typical of 'anorogenic' granites (e.g. potassiumand iron-rich bulk compositions, Fe-rich hydrous silicates, emplacement conditions involving low ox...

Journal: :journal of sciences, islamic republic of iran 2012
h. ahmadipour

the sargaz granitic intrusion has been emplaced in sargaz ophiolitic suite, south-east of sanandaj-sirjan metamorphic zone, south of kerman province. the central part of the intrusive body contains pinkish coarse-grained granite, but the fractured northern part, neighboring chah-mazraeh fault, has been subjected to pervasive na-metasomatism and related subsolidus reactions. in the northern alte...

Journal: :iranian journal of science and technology (sciences) 2006
m. boomeri

the late eocene-early oligocene sarnowsar granitic rocks and many dacitic to rhyolitic dykesintruded in metamorphosed and metasomatized shale, sandstone, calcite and dolomite marbles andvolcaniclastic and pyroclastic rocks. as a result several million tons of iron ores formed within carbonaterocks in the sangan area. the sarnowsar granitic rocks are mainly granite to granodiorite, metaluminous,...

2002
S. Chakraborty D. B. Dingwell M. Chaussidon

A~~~-~erni~ Asiatic of B in synthetic melts of hapl~~tic composition have been measured by the diffusion couple technique at 1 atm between 1200-1600°C. The compositional profiles were measured by ion microprobe and modelled using the Boltzmann-Matano formalism to retrieve compositionally dependent interdiffision coefficients. At the experimental conditions, &OS is found to exchange primarily wi...

Journal: :Tunnelling and Underground Space Technology 2021

When carrying out compressive tests on rock specimens, a stress plateau is typically attained following peak strength within strain range few times larger than the at strength. This level commonly known as residual A large database of these granitic specimens has been compiled and analyzed in detail with aim improving understanding this type rock. It observed that physical scale does not signif...

Journal: :Brazilian Journal of Radiation Sciences 2019

Journal: :The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists 1970

Journal: :Journal of Geography (Chigaku Zasshi) 1997

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