Bazman volcano lies east of this field, sometimes it is even included in analyses of the field. Tectonically, the field is located between the Makran mountains in the south, a range formed by Paleocene flysch and older ophiolites, and the Lut block in the north which is a crustal block of Paleozoic-Mesozoic age that is buried beneath more recent sedimentary and volcanic rocks. To the south lies also the Jaz Murian depression. The field is in the Central Iranian volcanic belt, a mountain range with summits exceeding of altitude. In this belt, volcanic activity commenced during the Cretaceous as submarine volcanism. A peak of activity occurred during the Eocene, afterwards andesitic-dacitic stratovolcanoes were formed during the Pliocene-Pleistocene. This volcanism may be associated either with a crustal weakness zone or subduction along the Zagros. Iran has two other volcanic belts, one associated with the Alborz and another at the Lut. Tectonic processes in Iran are ultimately dependent on the northward movement of the Arabic plate with respect to the Eurasian plate.