Abstract. A nonconformity refers to a hiatal surface located between metamorphic or igneous rocks and overlying sedimentary volcanic rocks. These surfaces are key features with respect understanding the relations among climate, lithosphere tectonic movements during ancient times. In this study, petrological, mineralogical geochemical characteristics of Variscan basement rock as well its Permian...

nezam-abad area is located in southwest of shazand (arak) which is a part of sanandaj-sirjan zone. major intrusive rocks of nezam-abad are quartz diorite and minor amount of granodiorite. leucogranitic, pegmatite dykes and quartz-tourmaline veins were intruded the quartz diorite. quartz diorites are mainly composed of plagioclase, hornblende, biotite, quartz and pyroxene as major minerals. majo...

the etive igneous complex has intruded into dalradian and moine meta-sedimentary rocks in devonian. main rock types of the complex are granodiorite, monzodiorite, monzogranite, granite and diorite. geochemical studies show that the magmas were of high k calc-alkaline, i-type and metaluminous nature. application of discriminant diagrams to the etive rocks indicates a possible within-plate tecton...

Geotourism potential of Eruku and its environs with emphasis on Ilado hill was appraised.The methods adopted in this work includes geological field mapping interview. From the exercise, rocks include migmatite, gneisses, amphibolite granites, diorite pegmatite. The tourist attractions remnant ancient city wall (Odi Ilu), joining Abumo) hill. also discovered to be an abandoned gate made gold ful...