Petrology and Sedimentary Environment of the Kahar Formation in Firouzabad and Shahindezh Areas (west and central Alborz)

Gharib, F.; Lasemi, Y.; Emami, M. H.

doi:10.22071/gsj.2010.55348

Petrology and Sedimentary Environment of the Kahar Formation in Firouzabad and Shahindezh Areas (west and central Alborz)

Document Type : Original Research Paper

Authors

F. Gharib ¹

Y. Lasemi ²

M. H. Emami ³

¹ Islamic Azad University, Science and Research Campus, Tehran, Iran Applied Geological Research Center of Iran, Karaj, Iran

² Geology Department, Tarbiat Moalem University, Tehran, Iran

³ Geological Survey of Iran, Tehran, Iran

10.22071/gsj.2010.55348

Abstract

The clastic facies of Kahar Formation were identified in the studied sections of coastal, deltaic and fluvial and also carbonate facies in shallow marine environments. The vertical displacements of Kahar Formation in these study sections show an overall major transgressive upward cycle. The petrography of plutonic and semi- plutonic igneous rocks indicate that they consist mainly of monzogabbro- diorite and in some cases, alkaline syenite. According to the results of Kahar Formation's plutonic rocks petrography and studies of related facies, the basin of this formation was a continental rift.

Keywords

Kahar

Qaradash

Bayandor

Alborz

Facies

Cycle

Petrography

Rift