Encyclopedia of Astrobiology

Living Edition
| Editors: Muriel Gargaud, William M. Irvine, Ricardo Amils, Henderson James Cleaves, Daniele Pinti, José Cernicharo Quintanilla, Michel Viso

Barberton Supergroup

Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-27833-4_1554-3

Synonyms

Definition

The volcano-sedimentary sequence that forms the Barberton greenstone belt has been grouped stratigraphically as the Barberton Supergroup, renamed from the Swaziland Supergroup of older literature. The Barberton Supergroup formed ca. 3.55–3.22 Ga ago and is subdivided in ascending order into three major stratigraphic units: (1) The Onverwacht Group dominantly consists of submarine ultramafic-mafic volcanic rocks and minor felsic volcanic and silicified sedimentary rocks. (2) The Fig Tree Group is comprised of shale, graywacke, and felsic volcaniclastic rocks with minor conglomerate, chert, baryte, and banded iron formation. (3) The Moodies Group consists of shallow marine to fluvial sandstone and conglomerate with minor felsic and mafic volcanics, shale, and banded iron formation. These groups have been subdivided in to a number of formations which differ in lithology, thickness, and facies across the major fault zones that separate...

Keywords

Fault Zone Volcanic Rock Major Fault Greenstone Belt Stratigraphic Unit 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Department of GeologyUniversity of JohannesburgJohannesburgSouth Africa