introduction the shahrestanak mn deposit is located in southern qom province, 12 km southwest of the city of kahak. based on geological-structural divisions of iran, the deposit belongs to central volcanic belt or urumieh-dokhtar zone. the venarch deposit is one the most important known manganese deposits in iran. the sharestanak and venarch deposits are spatially and temporally related to each...

[1] The composition and bioavailability of particulate P influence marine biological community production on both modern and geologic time-scales, and continental margins play a critical role in the supply, modification, and storage of particulate P. This study examined particulate P cycling in the Santa Barbara Basin (SBB) off the coast of southern California using a 520 m deep-moored sediment...

El sector Loma Roja-Loma Hierro se localiza en la parte septentrional del distrito metalogénico Dora-Francisco, noroccidente de Cuba. Este estudio ha estado dirigido a delimitar las anomalías pedogeoquímicas complejas asociadas depósitos minerales tipo Sedex, mediante aplicación combinada análisis factores y modelación multifractal. Fueron utilizados los resultados analíticos 1801 muestras suel...

La determinación de contenidos metales preciosos (Au y Ag) en las zonas oxidación, alteración hidrotermal cizallamiento presentes la zona metalogénica Bahía Honda, al noroeste Artemisa, fue el objetivo primordial investigación. mayoría estas se localizan sobre los alrededores yacimientos y/o prospectos cupro – sulfurosos que extienden desde macizo Cajálbana, hacia oeste, hasta Buena Vista, este...

Recognition of ore deposit genesis is still a controversial challenge for economic geologists. Here, this task was addressed by the virtue of Bayesian data fusion (BDF) implementing available proofs: semi-schematic examples with two (Cu and Pb + Zn) and three (Cu, Pb + Zn and Ag) evidences. The data, in current paper are just concentrations of indicated elements, were collected from Angouran’s ...

A collection of 235 samples were taken from 115 sites (representing a density of 1 sampling site ca. 130 km) on rural soils derived from the major rock types in the southern Iberian Massif. The geochemical baselines of selected trace elements (As, Co, Cr, Cu, Ni, Pb and Zn) were determined on the b2 mm soil fraction. The sampling sites were not directly influenced by external pollution. Soil ge...

Reactive phosphorus undergoes diagenetic transformation once transferred into marine sediments. The degree of regeneration and redistribution of phosphorus depends on early diagenetic and environmental conditions, which may be linked to larger scale phenomena, such as bottom water circulation, water column ventilation, and organic carbon flux. Phosphorus phases of the 50m-sized fraction of deep...