Geochemical and Tectonic Setting of Trachyte rock withinAvromanCarbonite Formation, Zagros Suture Zone,Kurdistan Region/ Northeastern Iraq.

Ismail, Sabah A.; Abdul-Qadir, Shleer B.

doi:10.32894/kujss.2018.13.3.19

Geochemical and Tectonic Setting of Trachyte rock withinAvromanCarbonite Formation, Zagros Suture Zone,Kurdistan Region/ Northeastern Iraq.

Document Type : Research Paper

Authors

Sabah A. Ismail ¹

Shleer B. Abdul-Qadir ²

¹ Collage of Education for Pure Science, University of Kirkuk, Kirkuk, Iraq.

² Department of Applied Geology, Collage of Science, University of Kirkuk, Kirkuk, Iraq.

10.32894/kujss.2018.13.3.19

Abstract

Trachyte extrusion rocks exposed as dyke cutting Avroman carbonate formation that is part of northwestern Zagros suture zone.Petrographical study combined with EMPA study reveals that these trachyte rock composed of essentially Plagioclase and Clinopyroxene minerals with occurrence of some accessory minerals such as Ileminete and Magnetite. Secondary minerals of Zeolite facies (Analcime) and Serpentine minerals are present as result of alteration and serpentinization process. The whole rock geochemical indicates that these rocks are poor in silica and rich in calcium content. Upper continental crust indicate that these elements are depleted in Large ion lithophil element(LILE) and enrich in high field strength element(HFSE). Chondrite normalized rare earth elements are characterized by enrichment in light rare earth element(LREE) relative to heavyrare earth element(HREE). Geochemical data indicate that these rocks were generated from on enriched (OIB) mantle source formedWithin Plate (WIP). (WIP).

Keywords

Trachyte

Avroman

Gondwana

Kurdistan Iraq

Subjects