NDLI: Introduction: The Zimbabwe Craton and controversies over Archaean granite-greenstone terrains

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Introduction: The Zimbabwe Craton and controversies over Archaean granite-greenstone terrains

Content Provider	Scilit
Author	Bickle, M. J. Nisbet, E. G. Martin, A. Orpen, J. L.
Copyright Year	2020
Description	The Belingwe Greenstone Belt contains a wide variety of Archaean rocks which provide evidence of major significance in interpreting the strati graphic history of the Zimbabwe Craton, and, more generally, in understanding the nature of the Archaean Earth. The stratigraphic sequences in the belt are well preserved, and the interpretation of the Belingwe rocks provides the underpinning of the present stratigraphic evolution of the Zimbabwe Craton. The sequence includes old basement, consisting of granitoid gneisses ca. 3.5 Ga old, overlain by three older greenstone sequences and a well developed younger (2.7 Ga) greenstone sequence. At the base of the 2.7 Ga sequence is a well exposed unconformity, demonstrating that the lavas and sediments of the younger greenstones were laid down on a mature terrain of eroded granitoid and greenstones. The belt contains a wide variety of unusual rocks, including an extensive and locally very fresh suite of komatiites and komatiitic basalts, as well as carbonates which contain stromatolites. These rocks demonstrate that some greenstone belts formed on continental crust. The variety of sedimentary and volcanic environments probably reflects interaction of a range of tectonic processes as diverse as those operating today. Book Name: The Geology of the Belingwe Greenstone Belt, Zimbabwe
Related Links	https://content.taylorfrancis.com/books/download?dac=C2004-0-11669-0&isbn=9781003077596&doi=10.1201/9781003077596-1&format=pdf
DOI	10.1201/9781003077596-1
Language	English
Publisher	Informa UK Limited
Publisher Date	2020-08-26
Access Restriction	Open
Subject Keyword	Book Name: The Geology of the Belingwe Greenstone Belt, Zimbabwe Geology Greenstone Evolution Contains Younger Komatiites Stratigraphic
Content Type	Text
Resource Type	Chapter

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