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The Upper Devonian deposits are relatively thick and developed in eastern Alborz. These deposits are located in Shirband area which is attributed to Geirud Formation. Shirband Upper Devonian deposits are situated by a discontinuity with the same gradient on Mila Formation and also under Mobarak Formation. The thin limestone, shaly limestone, and shale layers of the Geirud Formation are gradually followed...
The latest Carboniferous–Early Permian Dorud Group in the Chaman‐Saver area of eastern Alborz, Iran is more than 222 m thick and includes thick sequences of oncolitic limestone, sandy limestone, sandstones and shales. The Emarat and Ghosnavi formations of this Group are dated here as latest Gzhelian to early Sakmarian Stages. During the Asselian Stage, the sea level fell abruptly and epeirogenic episodes...
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