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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Dating the oldest greenstone in India: A 3.51-Ga precise U-Pb SHRIMP zircon age for dacitic lava of the southern Iron Ore Group, Singhbhum craton
Journal of Geology, Volume 116, No. 5, Year 2008
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Description
This article reports a precise 3506.8 ± 2.3-Ma U-Pb SHRIMP zircon age for dacitic lava in a well-preserved low-grade metamorphic and low-strained greenstone belt succession of the southern Iron Ore Group, Singhbhum craton, India. This age makes the succession the oldest-known greenstone belt succession in India and one of the oldest low-strain greenstone successions in the world after the 3.51-Ga Coonterunah Group of the Pilbara craton, Western Australia, and the moderately deformed 3.54-Ga Theespruit Formation of the Barberton Greenstone Belt, Kaapvaal craton, South Africa. The geochemical composition of the dacitic lava and related volcanic rocks suggests that they formed in a volcanic arc setting. The succession also contains a major ∼120-m-thick oxide facies banded iron formation that distinguishes it from the slightly older successions of the Pilbara and Kaapvaal cratons. This banded iron formation may well be one of the oldest and most well preserved, and together with associated volcanics, it may have immediate implications for understanding >3.5-Ga surface and tectonic processes on Earth. © 2008 by The University of Chicago. All rights reserved.
Authors & Co-Authors
Mukhopadhyay, Joydip
India, Kolkata
Presidency University, Kolkata
South Africa, Johannesburg
University of Johannesburg
Beukes, Nicholas Johannes
India, Kolkata
Presidency University, Kolkata
South Africa, Johannesburg
University of Johannesburg
Armstrong, Richard A.
India, Kolkata
Presidency University, Kolkata
Australia, Canberra
The Australian National University
Zimmermann, Udo
India, Kolkata
Presidency University, Kolkata
South Africa, Johannesburg
University of Johannesburg
Norway, Stavanger
Universitetet I Stavanger
Ghosh, Gautam
India, Kolkata
Presidency University, Kolkata
Medda, R. A.
India, Kolkata
Presidency University, Kolkata
Statistics
Citations: 202
Authors: 6
Affiliations: 4
Identifiers
Doi:
10.1086/590133
ISSN:
00221376
Study Locations
South Africa