The Neoproterozoic rocks of the Nakora Ring Complex (NRC) consist three phases (Extrusive, Intrusive and Dyke) that are based on detailed geological mapping (contact relationship, mode occurrence, position xenolith, flows, dykes veins) their stratigraphic position. NRC consists mainly acid volcanic besides minor amount basic with intermediate calc-alkaline to tholeiitic affinities occurs in for...

Abstract We present a thermal history of the Kedougou Kenieba Inlier (eastern Senegal), western-central outcropping part West African Craton, based on 40Ar/39Ar analyses performed hornblende, biotite, and K-feldspar minerals from Paleoproterozoic plutonic rocks. age spectra obtained for hornblendes biotites range between 2055 ± 26 2028 ± 28 Ma, in very good consistency. They suggest that magmat...

Post-collisional mafic dykes crosscut the Paleozoic metamorphic basement and late-Variscan plutons in Les Guilleries massif (Catalan Coastal Ranges, NE Iberia). The predominance of phenocrysts, porphyritic texture, abundant amphibole, high MgO volatile content, together with crustal-like trace-element patterns indicate that correspond to calc-alkaline lamprophyres, mainly spessartites. Their en...

Over summer 2017, I continued my research on dikes emplaced during the waning stages of the Neoproterozoic-Ordovician Ross Orogen, a continental arc along the present day location of the Transantarctic Mountains in Antarctica. The dikes intrude calc-alkaline plutons constituting the main intrusive phase as well as metasedimentary rocks formed during early stages of orogenesis. These dikes compr...

El Sela shear zone occurs in the younger granite rock of Gabal El Sela area, south Eastern Desert, Egypt near the Sudan Frontier. It comprises lines-arranged intrusions trending ENE-WSW and extend for about 1.5 km in length and reach up to 40 meters in width. These lines-arranged intrusions include multi-phase quartz veins, altered microgranite and altered basic dykes. These dykes hosting or ac...