Petrogenetic interpretation of Cu hosted Eocene volcanic rocks in southwest of Ardestan, East of Isfahan
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2015, Vol 6, Issue 2
Abstract
In the present study, study areas the part of Urumieh- Dokhtar volcanic belt. The main of rocks in this area are Eocene volcanic rocks consist of lava and pyroclastic rocks, with andesite and andesite basalt composition. These rocks are the most important cu-hosting ones in thisareaand have aporphyritic texture, cavity, flow, cellular foam, glomeroporphyritic, poikilitic and spherulitic textures, and in handy specimens are generally fine grained to fine to medium grained. From mineralogical perspective, these rocks include pyroxene, plagioclase, biotite, quartz and amphibole as well as secondary minerals such as epidote, chlorite, calcite and metal ores. These rocks are not immune from alteration and in some parts of very high intensity of alteration due to hydrothermal conditions being seen. Important of alteration kinds in this area are 2 groups consist of chlorite- epidote- calcite and silicate- sericite alteration that focused at andesitic lava and generation by hydrothermal solutions. On the base of minor and trace element geochemical data on diagrams, observations of minerals, rocks and geochemistry indicate that primary magma of volcanic rocks in the area was sub-alkaline, calc-alkaline series. Also the diagrams of the tectonic characteristics show that these rocks were generated in an active continental margin volcanic arc and it is thought that are affected by the subduction. Diagrams of trace elements in volcanic rocks normalized with chondrite and primitive mantle show that enriched of the light rare earths related to heavy rare earth element probably indicates a derivation from the metasomatic mantle.
Authors and Affiliations
Sayyed Hossein Roshan, Ali Khan Nasr Isfahani
Maxent modeling of the habitat distribution of the critically endangered Pterocarpus indicus Willd. forma indicus Inmindanao, Philippines
A current and projected suitable habitat distribution models for Pterocarpus indicus Willd. forma indicus were generated using Maximum Entropy Modeling algorithm (MaxEnt). The Receiver Operating Characteristic (ROC) – Ar...
Comparative analysis of physicochemical properties of honey from ecological zones and branded honey of Pakistan
The investigations were carried out in the Honey Analysis Laboratory of Honeybee Research Institute, National Agricultural Research Centre Islamabad, Pakistan, to determine the quality and Physico-chemical characteristic...
Phytoplankton diversity as a bioindicator environmental changes in coal mine area
The aim of this research was to determined phytoplankton variety and quality of Binuang Dam chemical-physics waters. Methodology this research is descriptive and observation is arranged to direct observation at the site...
Petrography, Mineralogy and Geochemistry of Solh Abad igneous masses (S.W. Bajestan – Razavi Khorasan)
The investigated area in south west of Razavi Khorasan province located in 1: 250000 topography & geological map of Ferdwos which is considered as part of structural zone of central Iran and as apart of the northern ma...
Molecular fingerprinting of pathogenic Enterococcus isolates using Random Amplified Polymorphic DNA Analysis
Enterococcus sp. is considered to be one of the most prevalent species in the oral cavity, particularly in endodontic infections. The aim of the present study was to investigate the molecular fingerprinting of Enterococc...