Our Group organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations
700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)
Google Scholar citation report
Citations : 5125

Journal of Earth Science & Climatic Change received 5125 citations as per Google Scholar report

Journal of Earth Science & Climatic Change peer review process verified at publons
Indexed In
  • CAS Source Index (CASSI)
  • Index Copernicus
  • Google Scholar
  • Sherpa Romeo
  • Online Access to Research in the Environment (OARE)
  • Open J Gate
  • Genamics JournalSeek
  • JournalTOCs
  • Ulrich's Periodicals Directory
  • Access to Global Online Research in Agriculture (AGORA)
  • Centre for Agriculture and Biosciences International (CABI)
  • RefSeek
  • Hamdard University
  • EBSCO A-Z
  • OCLC- WorldCat
  • Proquest Summons
  • SWB online catalog
  • Publons
  • Euro Pub
  • ICMJE
Share This Page

Petrology and geochemistry of granitoids of the northern part of Adamawa Massif, N.E Nigeria

3rd International Conference on Earth Science & Climate Change

Ismaila Vela Haruna

ScientificTracks Abstracts: J Earth Sci Clim Change

DOI: 10.4172/2157-7617.S1.013

Abstract
The granitoids of the northern part of Adamawa Massif in northeastern Nigeria have been differentiated based of field and petrochemical data into granodiorite and granites. Although there are slight mineralogical and geochemical differences between the granodiorite and the granites (e.g Rb/Sr ratios lower in granodiorite than the granites), the two rock units have similar geochemical characteristics. The rocks are characterized by a wide range in SiO 2 , Calc-alkaline affinity, syn- to within- plate granite signatures, metaluminous to peraluminouss composition and more K 2 O-rich and hypersthenes-poor comparable to fractionated I-type granitoids. The rocks display slightly fractionated to fractionated LREE, almost flat HREE patterns, with significant negative EU and Ba anomalies, Linear major element trends and progressive rise in SiO 2 , K 2 O, Rb and Rb/Sr ratios with depleting MgO, Fe 2 O 3 , CaO, TiO 2 , Sr and Ba consistent with removal of plagioclase during fractionation of basic melts to yield silicic magma. This linear trend is reflected in the normative mineralogy where orthoclase and quartz increase from granodiorite to the granites whereas other minerals behave in a reverse manner. Based on field and petrochemical features, the granodiorites and the granites of south Adamawa Massif are I-type, generated in a syn- to within-plate collision-related tectonic setting and genetically related to a common source by fractional crystallization dominated by the removal from the melt hornblende, plagioclase, biotite, K-feldspar and accessory phases such as apatie, epidote and zircon.
Biography
Relevant Topics
Top