نتایج جستجو برای: andesite
تعداد نتایج: 762 فیلتر نتایج به سال:
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...
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...
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 ...
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