Bentonitization in the volcanic lahar facies, east of Isfahan

Category Petrology
Group GSI.IR
Location 21th symposium on geosciences
Holding Date 21 May 2008

   Abstract:
      The extensive magmatism is occurred in the north of GavkhuniLake, in Neogene, Plio-Pleistocene age. The studied area is situated at 130km east of Isfahan and belongs to Uroomieh -Dokhtar magmatic belt. The volcanic rocks which consist of basaltic-andesite, andesite, dacite and rhyo-dacite have variant facies.
   There are great volumes of volcanic debris flow (lahar facies) around the other volcanic facies. The argillitic alteration and bentonitization occurred in lahar.
   The geological and mineralogical evidences show that alteration has produced in alkaline condition and marine environment simultaneous with lahar precipitation. Alteration has constructed the useful economic potential, special bentonite in this region.

General:
     The extensive magmatism is occurred in the north of GavkhuniLake, in Neogene, Plio-Pleistocene age. The studied area is situated at 130km east of Isfahan and belongs to Uroomieh- Dokhtar magmatic belt. The volcanic rocks which consist of basaltic-andesite, andesite, dacite and rhyo-dacite have variant facies.
   There are great volumes of volcanic debris flow (lahar facies) around the other volcanic facies. The argillitic alteration and bentonitization occurred in lahar.
   The geological and mineralogical evidences show that alteration has produced in alkaline condition and marine environment simultaneous with lahar precipitation. Alteration has constructed the useful economic potential, special bentonite in this region.

tags: ISFAHAN