The Use of Chemostratigraphy in Determining The Boundary Between Al-Fat`ha Fn. (Middle Miocene) and Injana Fn.

Abstract

Chemostratigraphy is used to determine the boundary between the sandstones of Al Fat`ha Formation (Middle Miocene) and Injana Formation (Upper Miocene) at Ba`cheqah Mountain, the north east of Mosul. Samples were taken vertically along strike line. After performing chemical analysis, it has been shown that there is a difference in the concentrations of some chemical elements, especially traces ones, in the rocks mentioned above. The statistical results using T-test showed that there is variations in the concentrations of chemical elements with high degree of significance which made it possible to determine the contact between the two formations in the studied area.