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Lithostratigraphy of Jurassic sedimentary rocks in Qayen area, eastern Iran

Babazadeh S.

Volumina Jurassica

2006

Vol. 4, no. 1

78-78

The Jurassic sedimentary rocks dominate the surface exposure of western Qayen. They are extensively located at Doust-abad region. The focus of this study is on the lithofacies analysis of the sediments. The Jurassic rocks consist of the shale-limestone unit with intercalation of sandstone followed by massive limestone and is topped by limestone-argillaceous limestone with thin parallel lamination of shale. Three patterns of facies dominate the formation. Gray to black shale-mudstone facies in the lower part, biointrasparite/biopelsparite in the middle part and gray micritic limestone/argillaceous limestone. The main marine fauna include Lenticulina aff. quenstedti, Nodosaria cf. striatojuensis, Lingulina nodosaria, Haurania aff. amiji, miliolids, corals, crinoids, ammonites and echinoids.