Article citationsMore>>

J. P. Vicat, A. Pouclet and E. Nsifa, “Les Dolérites du Groupe du Ntem (Sud Cameroun) et des Régions Voisines (Centrafrique, Gabon, Congo, Bas Zaire): Caractéristiques Géochimiques et Place dans L’évolution du Craton du Congo au Protérozoique,” In: J. P. Vicat and P. Bilong, Eds., Géologie et Environnements au Cameroun, Collection GEOCAM, 1998, pp. 305-324.

has been cited by the following article:

• TITLE: Petrochemical Characterization of Two Distinct Types of Dolerites from Bafoussam Area, West Cameroon

  AUTHORS: Gus Djibril Kouankap Nono, Pierre Wotchoko, Sylvestre Ganno, Divine Ngong Njinchuki, Jean Paul Nzenti

  KEYWORDS: Doleritic Dyke; Petrochemical; Alkaline; Tholeiitic; Intraplaque; Bafoussam

  JOURNAL NAME: International Journal of Geosciences, Vol.4 No.8, October 18, 2013

  ABSTRACT: Two petrochemical types of doleritic dykes have been distinguished in Bafoussam area: 1) the olivine-bearing dolerites which are the most representative are dark green, showing characteristics of alkaline basalts and, 2) the calcite-bearing dolerites are grayish green, showing characteristics of tholeiitic basalts. The studied dolerites are less differentiated (1 FeOt/MgO 2); they present the evolution of a subalkaline magma following a calc-alkaline series (alkaline dolerites) and the tholeiitic series (tholeitiic dolerite). The chondrite normalized multielement spider diagrams of all the dolerites show a pronounced depletion in Ba, Th, and enrichment in Rb. Their geotectonic context is inferred to be intraplate and the contrast between the two types is probably due to a diverse source: crustal source for calcite-bearing dolerites and mantle source for olivine-bearing dolerites.