نتایج جستجو برای: geochemical mineralization prospectivity index
تعداد نتایج: 420179 فیلتر نتایج به سال:
Shelgerd area is located south of Mashhad, N.E of Iran, within Binalud Structural Zone. This region is affected by regional metamorphism, slate and phylite are the main metamorphic rocks of the area. Teriassic slate, phyllite, sandstone and Jurassic conglomerates crop out parallel to Sang bast- Shandize fault. Mineralization occurred as vein type, with trend of N65E to N50W with 75 degrees to t...
Selecting internal hyperparameters, which can be set by the automatic search algorithm, is important to improve generalization performance of machine learning models. In this study, geological, remote sensing and geochemical data Lalingzaohuo area in Qinghai province were researched. A multi-source metallogenic information spatial was constructed calculating Youden index for selecting potential...
The study area is located about 45 km of southwest Neyshabour and east of Arghash village. Both intrusive and volcanic rocks are exposed in the study area and they are intensively altered due to hydrothermal fluid. The alteration zoning in the study area consists of potassic, sericitic, carbonatization, silicification and propylitic. More than 10 intrusive rocks with composition in the range of...
In this paper we classify the range of feldspathic igneous rocks using five geochemical variables: the FeO/(FeOþMgO) ratio or Fe-index, the modified alkali^lime index, the aluminum-saturation index, the alkalinity index, and the feldspathoid silica-saturation index.The Fe-index distinguishes between melts that have undergone extensive iron enrichment during differentiation from those that have ...
The relationship of sedimentary organic matter, oil-gas and sandstone-type uranium (U) deposits is the key problem U-mineralization. Whether migrate hydrocarbons participate in U-mineralization still a controversy. Typical U Erlian Basin northeast China have been investigated through detailed petrography, mineralogical, micro spectroscopic, geochemical C-isotope studies. Petrographic observatio...
Abstract. A two-stage fuzzy inference system (FIS) is applied to prospectivity modelling and exploration-target delineation for rare earth element (REE) deposits associated with carbonatite–alkaline complexes in the western part of state Rajasthan India. The design FIS selection input predictor map are guided by a generalised conceptual model carbonatite–alkaline-complex-related REE mineral sys...
Bot-e-Gaz prospect area is located 34 km north of Torbate-e-Jam, Khorasan Razavi Province. Geology of the area includes diorite, granodiorite, and syenogranite intrusinos that intruded in metamorphic rocks. Magnetic susceptibility of intrusive rocks is <5× 10-5 SI and belong to ilmenite series (reduced type). These intrusive rocks are metaluminous to peraluminous and vary from medium potassium ...
The study area is located in northwest of Isfahan, 25 km northwest of Daran. Buin-Miandasht intrusive rocks consist of granite and granodiorite. Based on geochemical diagrams, these granitoids are I -type calc-alkaline and evolved in volcanic arc environments. The Buin-Miandasht intruded into the metamorphic basement (Paleozoic?) and a small skarn and hornfels occurred along its contact. Based ...
Kuh-E-Faryadoon and Kouli Kosh iron deposits are hosted by regional metamorphic rocks of Sanandaj-Sirjan zone around Deh-Bid area. Plugs and domes of acid rocks protrude these metamorphic rocks. A mylonitization event is super imposed on acid rock and metamorphic complexes. Field, petrological and geochemical studies have shown that (1) Iron mineralization have occurred during mylonitization in...
The Qara Sabalan manganese deposit belongs to the Qara Dagh-Sabalan metallogenic zone and is located in the eastern part of this zone (north of Meshginshahr). Geology of the area include volcanic (pyroclastic) rocks and the small outcrop of sub volcanic bodies (quartz-monzodiorite) with Eocene to Oligocene age. Mn deposit is hosted within the trachyandesite and tuff. Mn mineralization occurs as...
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