Investigation of kalateh _ reshm magmatic
| Category | Petrology |
|---|---|
| Group | GSI.IR |
| Location | The 25 Symposium of Geosciences |
| Author | Reza Zarei _ sahameih ,Hamed malek mohamadi & hamidreza mohebali |
| Holding Date | 02 July 2007 |
Abstract :
The area under the study (kalateh _ reshm) which is part of the trod . from geological point of view , this area is a portion of centeral iran zone.
One the basis of analysis samples and microscopic studies, the rocks in the area under the study consist of basaltic andesite, andesite, trachy andesite, dacite and rhyolite which have outcropped in the region as volcanic (breccia and lava) .
The microscopic observation of contamination magmata in the lava rocks such as the absorption phenomena poikiloblastic texture alternative classification in the plagioclase corrosion of pyroxenes and plagioclase and existence of altered and non altered plagioclase together . The geochemical observations such as dispersion and abnormal elements ratio of sub traction sufficient and studding of spider diagrams show the pollution and contamination primary magmata to up surface .
On the basis of existing diagrams , nature of magma tic rocks in calc – alkaline and sometimes alkaline .