نتایج جستجو برای: sedimentary copper mineralization

تعداد نتایج: 105857  

1999
Derek A. Brown Robert Cameron

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 Survey’s ongoing Sediment-hosted Gold Project, which is examining occurrences throughout the province which may have similarities to gold deposits in...

Journal: :Journal of Intelligent and Fuzzy Systems 2015
Nannan Zhang Kefa Zhou

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...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2007
Gregory T Ventura Fabien Kenig Christopher M Reddy Juergen Schieber Glenn S Frysinger Robert K Nelson Etienne Dinel Richard B Gaines Philippe Schaeffer

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...

2008
A. H. Nasr T. M. Ramadan Joseph Broz

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 ...

Journal: :Economic geology and the bulletin of the Society of Economic Geologists 2021

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 ...

Jalali Khalil Abadi, Mohammad, Mohebi, Ayda, Sadati, Seyedeh Narges, Yazdi, Mohammad,

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...

ژورنال: :پژوهش های دانش زمین 0
منصور عادپور دانشگاه شهیدچمران اهواز ایرج رسا دانشگاه شهیدبهشتی فریبرز مسعودی دانشگاه شهیدبهشتی مسعود حسینی کارشناس ارشد زمینشناسیاقتصادی، شرکت مهندسین مشاور زرناب اکتشاف، تهران

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...

قادری, مجید, مظهری, نازی , ملک‌زاده شفارودی, آزاده ,

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...

2015
Ulrich Kelka Daniel Koehn Nicolas Beaudoin

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...

Journal: :Boletín de la Sociedad Geológica Mexicana 2021

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...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید