Skip to main content
U.S. flag

An official website of the United States government

Qal’eh hasan ali maars, central Iran

January 1, 1976

A group of craters 120 km southeast of Kerman, the largest 1200 m across and 300 m deep, are typical maars, excavated depression with rims of bedded pyroclastic debris. Most of the crater rims are composed entirely of country rock clasts, but the largest crater yields tephrite, composed of phenocrysts of phlogopite, clinopyroxene, and olivine in a groundmass of anorthoclase, analcime, hauyne, clinopyroxene and magnetite, and a cumulate of phlogopite and clinopyroxene with highly potassic glass. The occurrence of hauyne as a ground mass mineral is a rare or unique feature. The maar field lies in the projection to the south of the Nayband fault and, with some flows near that fault, represents a province of Quaternary alkali basalt volcanism.

Publication Year 1976
Title Qal’eh hasan ali maars, central Iran
DOI 10.1007/BF02597000
Authors D. J. Milton
Publication Type Article
Publication Subtype Journal Article
Series Title Bulletin Volcanologique
Index ID 70011156
Record Source USGS Publications Warehouse