پترولوژی و ژئوشیمی سنگ های ماگمایی در غرب روستای داوران، جنوب غرباردستان (اصفهان)

Study area is located in west Davaran village and west south of Ardestan, this area is the part of UrumiehDokhtar volcanic belt. The main of rocks in this area are Eocene volcanic rocks consist of lava and pyroclastic rocks such as tuff, with andesite, andesite,andesite-bazalt, dacite and rhyodacitic composition. The main mineral in these rocks are quartz and feldspar. 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, the aluminum saturation (ASI) and met aluminous. 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 was volcanic arc that effect of subduction Neotethyan oceanic plate under central Iran continental plate in Mesozoic to Cenozoic.

کلیدواژه ها:

Davaran village ، Eocene volcanic rocks ، Calk-alkaline ، Met aluminous ، continental active margin ، West South of Ardestan