LA-SF-ICP-MS zircon U-Pb geochronology of granitic rocks from the central Bundelkhand greenstone complex, Bundelkhand craton, India

Author(s)

Verma, Sanjeet K. ^[1] ; Verma, Surendra P. ^[2] ; Oliveira, Elson P. ^[1] ; Singh, Vinod K. ^[3] ; Moreno, Juan A. ^[1]

Affiliation

^[1] Univ Campinas UNICAMP, Inst Geosci, Dept Geol & Nat Resources, POB 6152, BR-13083970 Campinas, SP - Brazil

^[2] Univ Nacl Autonoma Mexico, Inst Energias Renovables, Privada Xochicalco S-N, Temixco 62580, Mor - Mexico

^[3] Bundelkhand Univ, Dept Geol, Jhansi, Uttar Pradesh - India

• Document type: Journal article
• Source: JOURNAL OF ASIAN EARTH SCIENCES; v. 118, p. 125-137, MAR 15 2016.
• Web of Science Citations: 18

Abstract

The central Bundelkhand greenstone complex in Bundelkhand craton, northern India is one of the well exposed Archaean supracrustal amphibolite, banded iron formation (BIF) and felsic volcanic rocks (FV) and associated with grey and pink porphyritic granite, tonalite-trondhjemite-granodiorite (TTG). Here we present high precision zircon U-Pb geochronological data for the pinkish porphyritic granites and TTG. The zircons from the grey-pinkish porphyritic granite show three different concordia ages of 2531 +/- 21 Ma, 2516 +/- 38 Ma, and 2514 +/- 13 Ma, which are interpreted as the best estimate of the magmatic crystallization age for the studied granites. We also report the concordia age of 2669 +/- 7.4 Ma for a trondhjemite gneiss sample, which is so far the youngest U-Pb geochronological data for a TTG rock suite in the Bundelkhand craton. This TTG formation at 2669 Ma is also more similar to Precambrian basement TTG gneisses of the Aravalli Craton of north western India and suggests that crust formation in the Bundelkhand Craton occurred in a similar time-frame to that recorded from the Aravalli craton of the North-western India. (C) 2015 Elsevier Ltd. All rights reserved. (AU)

• FAPESP's process: 12/15824-6 - Evolution of archaean terranes of the São Francisco Craton and the Borborema Province, Brazil: global environmental and geodynamic implications
• Grantee: Elson Paiva de Oliveira
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 14/04920-0 - Geological and geochemical investigations on archaen granite-gneiss terranes of São Francisco Craton
• Grantee: Juan Antonio Moreno Moreno
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 12/07243-3 - Application of new multi-dimensional discrimination diagrams and geochemical modeling to Archaean igneous rocks of Brazilian cratons
• Grantee: Sanjeet Kumar Verma
• Support Opportunities: Scholarships in Brazil - Post-Doctoral