Authors / CoAuthors
Kemp, A.I.S. | Sheppard, S. | Tyler, I.M. | Bodorkos, S.
Abstract
The purpose of this study was to constrain the processes of Paleoproterozoic crustmantle evolution by investigating the Lu-Hf, Sm-Nd and oxygen isotope systematics of igneous rocks of the Lamboo Province of the Halls Creek and King Leopold Orogens, in the Kimberley region of Western Australia. The specific objectives were to: 1. Ascertain the nature of the source rocks of the granites, and to test whether granite formation involved the reworking of ancient meta-igneous protoliths in an intra-plate environment or complex crust-mantle interaction processes typical of modern plate tectonic settings; 2. Use data from granite-hosted zircons to quantify the proportion of new crust formed during discrete magmatic events, and to link this with the longer-term record of crustal evolution preserved by detrital zircons, and 3. Constrain the tectonic setting of the Lamboo Province, and thus the geodynamic controls on global crustal growth in this key time period.
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nonGeographicDataset
eCat Id
83212
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Keywords
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- External PublicationAbstract
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- WA
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Isotope Geochemistry
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- Published_Internal
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2015-01-01T00:00:00
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geoscientificInformation
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[-20.0, -14.0, 123.0, 129.0]
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