Table of Contents


Introduction

The Grenadine islands
  • Bequia
  • Mineralogy, Petrology and Phenocryst Chemistry of the Bequia Volcanic Rocks
    Bequia blocks
    Mineral Chemistry of the Plutonic blocks

    Discussion
    Equilibrium, physical conditions and crystallization processes
    Conclusions
    Appendices.




    Earth Sciences

    University of Windsor
    Memorial Hall, Room 203
    401 Sunset Avenue Windsor, Ontario Canada N9B 3P4
    Phone: (519) 253-3000 ext:2492
    FAX:519 973 7081
    Email:tsmith@uwindsor.ca and smttesmith@aol.com

    Terence E Smith
    Professor Emeritus


    THE GRENADINE ISLANDS.

    For descriptions of the geology of the Grenadine Islands, including Bequia, see Westercamp et al., 1985, Etude Monographique, Documents du Bureau de Recherches Geologiques et Minieres, 92, 198 p.

     
     
    Figure 1. The Grenadine Islands and the Lesser Antilles Arc.

    A detailed discussion of the petrogeneses of the Bequia volcanic rock suites has been previously published (Smith et al., Journal of Petrology, 1996, 37,117-143).

    It is one of the best documented examples from the Lesser Antillles Arc showing that some of the lavas formed by closed-system fractional crystallization and others by assimilation-fractional crystallization.

    29 new whole rock analyses of the lavas and dykes, and a summary of more than 350 analyses of the chemistry and zoning of the intratelluric minerals of the volcanic rocks, are described and discussed.

    In addition, a summary of more than 500 chemical analyses, and a limited number of isotopic ratios, of the minerals making up the associated plutonic blocks, and of glass inclusions and selvedges, is presented and discussed.




    Comments about our web pages? Send e-mail to: Web Administrator, University of Windsor. Last modified on 21/11/2003 by CN=Terence E Smith/O=University of Windsor. Copyright 2003, University of Windsor. Although care has been taken in preparing the information in this site the University of Windsor cannot guarantee its accuracy.