نتایج جستجو برای: abad granite
تعداد نتایج: 6304 فیلتر نتایج به سال:
In this paper, the hydraulic and heat-transfer properties of two sets of artificially fractured granite samples are investigated. First, the morphological information is determined using 3D modelling technology. The area ratio is used to describe the roughness of the fracture surface. Second, the hydraulic properties of fractured granite are tested by exposing samples to different confining pre...
–Carbon bound in gibbsite, collected from a residual weathering profile developed on a Paleozoic granite in the Georgia Piedmont, was examined for its C content and found to be geologically young. The study site, located at the Panola Mountain Research Watershed, has developed a granite–saprolite–soil regolith in which C-gibbsite model ages deep within the profile (C-horizon) average about 8000...
Rondônia intrusive suites represent the youngest A-type magmatism that occurred in SW of Amazon craton, with mineralizations Sn, Nb, Ta, W, and topaz. Petrological isotopic studies (U-Pb Lu-Hf by LA-ICP-MS) allowed Massangana granite to be subdivided into São Domingos facies (medium fine biotite-granite), Bom Jardim (fine granite), (pyterlites coarse granites) Taboca granites). The crystallizat...
The granitic intrusives in southwest Saqqez are located in the northern Sanandaj Sirjan zone. These granites can be divided into mesocratic and leucocratic granites. The external morphology and internal structures of zircon from these granites have been investigated employing the classic Pupin method supplemented by electron microscope analysis. The zircon crystallization is a function of tempe...
High pressure waterjets are now entering use on an increasing scale for primary rock excavation in quarries. In order to assess the parameters required for any such rock cutting operation a series of experiments need to be carried out in which the critical operational parameters are identified. This paper seeks to identify such a standard procedure with an explanation with the reasons for choic...
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