نتایج جستجو برای: andesite

تعداد نتایج: 762  

Journal: :Journal of Applied Geology 2021

ABSTRACT. This study is performed to investigate the characteristics of intrusive andesite rock consisting Kalirejo Road Side Slope located in Kulon Progo Mountains. The rocks slope are identified by visual observation hand specimens field, petrographic and X-ray Diffraction (XRD) analyses samples laboratory, upon which genetic classification determined. altered types determined presence specif...

حق نظر, شهروز , ملکوتیان, سارا ,

The Paleogene volcanic rocks of Damash have a considerable outcrops in Alborz structural zone in Guilan Province. These volcanic rocks show a compositional range from olivine basalt, basaltic andesite, pyroxene andesite to andesite. The petrographical and geochemical studies indicate that the fractional crystallization of clinopyroxene and olivine play an important role in lithological varietie...

Journal: :Journal of the Mining and Metallurgical Institute of Japan 1984

Journal: :The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists 1959

Journal: :The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists 1959

Journal: :Journal of Mineralogical and Petrological Sciences 2006

Journal: :journal of mining and environment 2013
maysam abedi gholam-hossain norouzi nader fathianpour ali gholami

this paper describes the application of approximate methods to invert airborne magnetic data as well as helicopter-borne frequency domain electromagnetic data in order to retrieve a joint model of magnetic susceptibility and electrical resistivity. the study area located in semnan province of iran consists of an arc-shaped porphyry andesite covered by sedimentary units which may have potential ...

Journal: :Journal of the Mining and Metallurgical Institute of Japan 1983

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