Document Type : Research Paper

Authors

1 University of Baghdad - College of Science - Department of Geology

2 Anbar University - Center for Desert Studies

Abstract

Gulneri formation in it's type locality (Dokan Dam), had been studied
geochemically & palaeontologically. The trace elements (Mn, Ni, Cr, Sr, Rb) in
addition to K2O(IR.)& (L.O.I) were documented. The genus & species of
planktonic foraminifera has been identified, where the index species used to
determine the age of the formation (Lower Touronian). The study deduced form the
behavior & distribution of geochemical elements in addition to the metamorphic
processes acting on glauconite mineral which leads to formation of Byrite mineral
and the presence of bio-assemblages in the Black shale, that Gulneri formation were
deposited in deep marine ecology away from the shoreline which influenced by
oxygen deficiency (Euxenic environment

Main Subjects

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