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The Geology of the Belingwe Greenstone Belt, Zimbabwe : A study of Archaean continental crust - M.J. Bickle

The Geology of the Belingwe Greenstone Belt, Zimbabwe

A study of Archaean continental crust

Hardcover Published: 1st June 1993
ISBN: 9789054101208
Number Of Pages: 246

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The very well preserved Belingwe Greenstone Belt provides a case study of Archaean crustal evolution, a geological window into the very early evolution of the earth. It contains some of the most interesting Archaean rocks on earth. The Archaean includes about one third of the earth's history, and there is vigorous debate about the early development of life, the evolution of the continents and the oceans, and the formation of mineral deposits. Geological relationships in the belt now form the basis of the Zimbabwe Archaean stratigraphy. Some of the freshest komatiitic volcanic rocks known constrain the chemistry and thermal structure of the early mantle and stromatolitic and well preserved sedimentary rocks provide a record of surface processes.
This volume of nine contributions presents the stratigraphy of the belt, its structure and tectonic setting, the sedimentology of what may be a rift basin, the geochemistry of the freshest Archaean komatiites yet found, and models of the evolution of the region. It is a detailed case study, based on field evidence of what may be the most complete and best preserved greenstone sequences yet found and a key reference work for all interested in the Archaean, whether from an interest in the early Earth or from an economic interest in the Archaean stratigraphic and volcanic controls on mineral deposits. The volume will serve as an ideal case study for undergraduate students interested in the formation and evolution of early crust.

Introduction: The Zimbabwe Craton and controversies over Archaean granite-greenstone terrainsp. 1
Rock units and stratigraphy of the Belingwe Greenstone Belt: The complexity of the tectonic settingp. 13
Structure and metamorphism of the Belingwe Greenstone Belt and adjacent granite-gneiss terrain: The tectonic evolution of an Archaean cratonp. 39
The Mtshingwe Group in the west: Andesites, basalts, komatiites and sediments of the Hokonui, Bend and Koodoovale Formationsp. 69
Sedimentology of the Brooklands Formation, Zimbabwe: Development of an Archaean greenstone belt in a rifted grabenp. 87
The Ngezi Group: Komatiites, basalts and stromatolites on continental crustp. 121
Pb and Nd isotopic correlation in Belingwe komatiites and basaltsp. 167
Geochemistry of the igneous rocks of the Belingwe Greenstone Belt: Alteration, contamination and petrogenesisp. 175
Controls on the formation of the Belingwe Greenstone Belt, Zimbabwep. 215
Referencesp. 225
Bibliography of the Archaean crustal study projectp. 233
Subject indexp. 235
Table of Contents provided by Blackwell. All Rights Reserved.

ISBN: 9789054101208
ISBN-10: 9054101202
Series: Geological Society of Zimbabwe, Special Publications 2
Audience: Professional
Format: Hardcover
Language: English
Number Of Pages: 246
Published: 1st June 1993
Publisher: A A Balkema Publishers
Country of Publication: NL
Dimensions (cm): 28.58 x 20.96  x 2.54
Weight (kg): 1.04
Edition Number: 1