نتایج جستجو برای: geochemical anomalies

تعداد نتایج: 57431  

Journal: :Computers & Geosciences 2009
Qiuming Cheng Frederik P. Agterberg

Hydrothermal processes in the Earth’s crust can result in ore deposits characterized by high concentrations of metals with fractal or multifractal properties. This paper shows that stream sediments in the neighborhoods of ore deposits also can have singular properties for ore-mineral and associated toxic trace elements. We propose a new local singularity mapping method for assembling element co...

The Urumieh-Dokhtar Magmatic Arc (UDMA) is recognized as an important porphyry, disseminated, vein-type and polymetallic mineralization arc. The aim of this study is to identify and subsequently determine geochemical anomalies for exploration of Pb, Zn and Cu mineralization in Mial district situated in UDMA. Factor analysis, Concentration-Number (C-N) fractal model and Local Linear Model Tree (...

Journal: :Minerals 2021

Seismic hazard reduction policies usually utilize earthquake catalogues and probability evaluations of occurrence. Further geophysical geochemical parameters could contribute to as is currently the case in some countries, such Iceland, Taiwan, China Russian Federation. In past four decades, intense research activity carried out by many different institutions Italy has allowed us recognize most ...

Journal: :زمین شناسی اقتصادی 0
مریم جاویدی مقدم محمد رضا حیدریان شهری محمد حسن کریم پور

iron mineralization of kalate shahin is located 107 km on the ghoochan-neyshaboor road (in khorasan razavi province). subvolcanic intrusive bodies of quartz monzonite to monzonite porphyry intruded the cretacous limestone. sedimentary units of the area in decreasing age include cretaceous limestone and eocene and paleocene-quaternary microconglomerate to sandstone. mineralization in the region ...

Hidarian Shahri, mohammadreza, Kazempour, mohammadreza, Malekzadeh Shafaroudi, Azadeh,

Freezi Lead- Zinc- Copper prospect area is located in north east Mashhad in Khorassan Razavi Province. Mineralization was formed in the area as vein type in the host rocks of slate with interlayer of phyllite and meta sandstone of Upper Triassic to Early Jurassic age (equivalent to Shemshak Formation). The only alteration in the host rock is silicification. Primary minerals are quartz, galena, ...

2007
M. H. MENDENHALL W. K. Kellogg

During the second haft of 1979, anomalously high emanation of radon was recorded at two stations of the automated radon-thoron monitoring network operated by the W. K. Kellogg Radiation Laboratory of the California Institute of Technology. The two stations exhibiting major anomalies, Kresge and Dalton Canyon, are located approximately 30 km apart on the frontal fault system of the Transverse Ra...

2007

Exploration geochemistry continues to be a major contributor to mineral exploration programs at all scales. The decade has spanned a complete economic cycle in the minerals industry, during which there has been a change in exploration emphasis from the dominance of Au and diamonds to the addition of a range of base metals and the recent revival of U exploration. Increasing metal prices and the ...

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