Meaning of Rocks Basic Enclaves in the Eburnean Granitoids of Mako Area (Kédougou-Kéniéba Inlier, Senegal): Petrogenetic Implications

作     者：Ibrahima Gassama Moussa Dabo Mamadou Ndiaye Emmanuel Tama Samoura Fatou Bop Ndong Ibrahima Gassama;Moussa Dabo;Mamadou Ndiaye;Emmanuel Tama Samoura;Fatou Bop Ndong

作者机构：Université Cheikh Anta Diop de Dakar Département de Géologie Dakar Sénégal 

出 版 物：《International Journal of Geosciences》 (地球科学国际期刊（英文）)

年 卷 期：2021年第12卷第1期

页      面：39-56页

学科分类：070902[理学-地球化学] 0709[理学-地质学] 07[理学] 

主　　题：Paleoproterozoic Kédougou-Kéniéba Mako Granitoids Basic Enclave Birimian 

摘      要：The Mako area, located in eastern Sénégal, constitutes a segment of Paleoproterozoic (Birimian) formations of the Kédougou-Kéniéba Inliers (KKI) in the western part of the West African craton.The basic volcanism of the Birimian formations of the KKI has long been considered to be related to a single magmatic event associated with a Mid Oceanic Ridge Basalts (MORB) setting.The aim of this paper is to demonstrate on the basis of the architectural characteristics of the granitoids dark enclaves, the occurrence of at least two distinct phases of basic Magamtism in the Birimian of the KKI.The methodology consists of a cartography, a petrographic and architectural characterization of the dark enclaves within the Mako granitoids, in order to constrain their spatial and temporal relationships with the granitic magma. The results obtained are compared with those of the bibliography. We have pinpointed two types of enclaves depending o