Abstract
This study is concerned with geochemical analysis of major oxides; these are SiO2, CaO, MgO, Fe2O3, Al2O3, Na2O, K2O, TiO2, in addition to MnO. Atomic Absorption Spectrophotometer and Ultra Violet Spectrophotometer tools were used to examine ten samples represented the detritus LOI sediments of Injana Formation in Iraq in two sites which are (S1) site at Dohuk Governorate and (S2) at Al-Najaf Governorate; where five samples for each sites were collected.
Highlights
Geochemical data has significant importance for the clastic sediments as an indicator of source rocks, and many characters of these sediments
The Injana Formation extends to Iran as the Agha Jari Formation (Buday, 1973), it correlates with Siirt Series in Turkey (Brinkmann, 1976; Buday, 1980), and in Syria, the Upper Fars name is used for the formation (Ejel and Abdul Rahim, 1974)
The enrichment of quartz is an indication of sandstone maturity, due to its resistance to weathering and destruction for long transportation (Obiefuna and Orazulike, 2011)
Summary
Geochemical data has significant importance for the clastic sediments as an indicator of source rocks, and many characters of these sediments. The Injana Formation (Late Miocene-Pliocene) has a spacious spread as exposed formation in Iraq. It was described for the first time by Bellen et al (1959). It was formerly known as the Upper Fars Formation. The Injana Formation represents a fluviatile environment of detrital sediments as cyclotherm fining upward deposits (Basi,1973). These sediments consist of sandstone well beds which are grey to reddish brown in color, very fine to very coarse in grain
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