A Short Review on Lu-Hf Isotope System in Zircon: Implications for Crustal Evolution

Bhattacharya, Shrema and Janwari, Shazia (2015) A Short Review on Lu-Hf Isotope System in Zircon: Implications for Crustal Evolution. In: JOURNAL OF THE INDIAN INSTITUTE OF SCIENCE, 95 (2). pp. 147-157.

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Abstract

Zircon has been recognized as the unaltered part of the Earth's history which preserves nearly 4 billion year record of earth's evolution. Zircon preserves igneous and metamorphic processes during its formation and remains unaffected by sedimentary processes and crustal recycling. U-Pb and Lu-Hf in zircon work as geochronometer and geochemical tracer respectively. Zircon provide valuable information about the source composition of the rocks and the intrinsic details of an unseen crust-mantle processes. The world wide data of U-Pb and Lu-Hf isotope systems in zircon reveal crustal evolution through geological history. Moreover, the U-Pb age pattern of zircons show distinct peaks attributed to preservation of crustal rocks or mountain building during supercontinent assembly. The histogram of continental crust preservation shows that nearly one-third of continental crust was formed during the Archean, almost 20% was formed during Paleoproterozoic and 14% in last 400 Ma.

Item Type:	Journal Article
Publication:	JOURNAL OF THE INDIAN INSTITUTE OF SCIENCE
Publisher:	INDIAN INST SCIENCE
Additional Information:	Copy right for this article belongs to the INDIAN INST SCIENCE, INDIAN INST SCIENCE, BANGALORE 560012, INDIA
Department/Centre:	Division of Mechanical Sciences > Centre for Earth Sciences
Date Deposited:	24 Sep 2015 06:30
Last Modified:	24 Sep 2015 06:30
URI:	http://eprints.iisc.ac.in/id/eprint/52416

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