Geochemistry and tectonic setting of volcanic rocks in the Mahiroud volcano-plutonic complex, Southeast of Sarbisheh (Eastern Iran)

Document Type : Original Article


1 Department of Geology, Faculty of Science, Lorestan University

2 Department of Geology, Faculty of Basic Sciences, Lorestan University, Khorramabad, Iran

3 Department of Geology, Shahid Chamran University of Ahvaz, Ahvaz, Iran

4 University of applied science and technology, sistan and baluchestan



Volcanic rocks of the Mahiroud volcanic-intrusive complex show a range of andesite, andesite-basalt, and subalkali basalt. The texture of these volcanic rocks is amygdaloid and porphyry type and their constituent minerals include plagioclase, amphibole, pyroxene, alkali feldspars, and quartz. The geochemical characteristics of these volcanic rocks show that the magma forming these rocks is tholeiitic type (low potassium) and was obtained from the melting of spinel peridotite at a depth lower than the stability field of garnet. In terms of tectonic setting, most of the samples of the studied area are in the range of volcanic arc basalts and are consistent with the samples of the Raskoh volcanic arc of Pakistan and have no affinity with volcanic rocks related to Birjand ophiolites which are located next to them.


Main Subjects

Articles in Press, Accepted Manuscript
Available Online from 18 September 2023
  • Receive Date: 11 April 2023
  • Revise Date: 07 August 2023
  • Accept Date: 18 September 2023