نتایج جستجو برای: sedimentary copper mineralization
تعداد نتایج: 105857 فیلتر نتایج به سال:
This paper describes occurrences of low grade, disseminated gold in sedimentary rocks and alkalic intrusions in the vicinity of the Howell Creek Structure (HCS; Price,1964) of southeastern British Columbia. The study is part of the B.C. Geological Surveys ongoing Sediment-hosted Gold Project, which is examining occurrences throughout the province which may have similarities to gold deposits in...
Knowledge-and data-driven approaches are two major methods used to integrate various evidential maps for mineral prospectivity mapping (MPM). Geological maps, geochemical samples and data from known gold deposits were collected in the western Junggar area, Xinjiang Province. The geological and a spatial database for geological and mineral occurrences were constructed for the studied region. A w...
Highly cracked and isomerized archaeal lipids and bacterial lipids, structurally changed by thermal stress, are present in solvent extracts of 2,707- to 2,685-million-year-old (Ma) metasedimentary rocks from Timmins, ON, Canada. These lipids appear in conventional gas chromatograms as unresolved complex mixtures and include cyclic and acyclic biphytanes, C36-C39 derivatives of the biphytanes, a...
The main objective of the remotely sensed data fusion is to create an integrated composite image of improved information and enhanced interpretability. This data have geospatial details about earth’s surface for substantial assessment of land resources and mineral exploration. Fusion of Visible-Infrared (VIR) and Synthetic Aperture Radar (SAR) images provides complementary data to increase the ...
Abstract The detrital zircons in tills overlying the Guichon Creek batholith, British Columbia, Canada, have trace element concentrations and ages similar to those of from bedrock samples which they are interpreted been sourced. Rocks core batholith that host porphyry copper mineralization distinct zircon compositions relative distal, barren margin. We analyzed 296 separated 12 subglacial till ...
The Grouh area is located about 19 km north-east of Sarduyeh city in Kerman Province. The major lithological units in this area include Eocene andesite and andesitic basalt. Oligo-Miocene intrusive units include diorite, quartz diorite and granodiorite; while pyroclastic units include tuff and breccia. The alteration in the Grouh area is remarkable due to the penetration of the intrusive masses...
کانسار مسگرماب در50 کیلومتری شمالشرق شهرستان قائن، در قالب برگه زمین شناسی 1:100.000 آبیز و زون شرقایران واقع شده است. سنگهای آتشفشانیکانسار مسگرماب به سن پالئوسن بالایی- ائوسن، شامل تناوبی ازگدازهها (آندزیت، تراکیآندریت، آندزیت-بازالت و بازالت) و موادآذرآواری (انواع توف وآگلومرا) هستند. این سنگها، بر اساس دادههای ژئوشیمیایی عناصر اصلی وکمیاب، شباهت زیادی بهگدازههای کالکآلکال...
The Ma’danjoo prospect area is one of the eastern anomalies of Khaf’s Sangan iron mine in southeast of Mashhad. Geological units in the area include Jurassic sedimentary rocks, skarn, and Tertiary subvolcanic intrusion with monzonitic composition. Skarns have been seprated in to 7 zones on the basis of abundance and type of the calc-silicate including: garnet, pyroxene-garnet, pyroxene, phlogo...
Alternating fine grained dark and coarse grained light layers in rocks are often termed zebra patterns and are found worldwide. The crystals in the different bands have an almost identical chemical composition, however second-phase particles (e.g., fluid filled pores or a second mineral phase) are concentrated in the dark layers. Even though this pattern is very common and has been studied wide...
The sediment-hosted stratiform copper–silver mineralization in the San Marcos area of Coahuila, northeastern Mexico occurs predominantly at an Early Cretaceous redox boundary between footwall siliciclastic red beds Formation and hanging-wall carbonate strata Cupido Sabinas basin. hypogene is mainly present as chalcocite-group minerals, with additional bornite chalcopyrite, everywhere both disse...
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