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Summary of results. NTGS laser ablation ICP-MS in situ zircon and baddeleyite geochronology project: Mount Peake Gabbro, Arunta Region

Citation

Beyer, EE and Donnellan, N and Meffre, S and Thompson, JM, Summary of results. NTGS laser ablation ICP-MS in situ zircon and baddeleyite geochronology project: Mount Peake Gabbro, Arunta Region, Northern Territory Geological Survey, Northern Territory Gevernment, Darwin, NT, 2016-002 (2016) [Government or Industry Research]


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Abstract

This record presents trace-element and chronologic data collected from zircon and baddeleyite at the Australian Research Council Centre of Excellence in Ore Deposits (CODES) at the University of Tasmania in June 2015. The work was carried out in support of the Northern Territory Geological Survey (NTGS) regional geoscientific investigations and value adds to co- funded drill core acquired during Geophysics and Drilling Collaborations program, Round 2. Isotope data and interpretations for zircon and baddeleyite from samples of Mount Peake Gabbro, Arunta Region in the Northern Territory are presented herein. The Mount Peake Gabbro is a magnetite-rich gabbro and is host to the Mount Peake Fe-V-Ti deposit. The age of the country rocks intruded by the gabbro is unknown but is interpreted to be Palaeoproterozoic thus constraining the maximum crystallisation age of the Mount Peake Gabbro. The samples were collected with the aim of constraining the timing of this episode of mafic magmatism in the Arunta Region. Results from U-Pb dating yielded crystallisation ages of 1053 24 Ma for zircon and 1062 21 Ma for baddeleyite, indicating that intrusion of the Mount Peake Gabbro was synchronous with 10901040 Ma Giles Event mafic magmatism.

Item Details

Item Type:Government or Industry Research
Keywords:zircon, baddeleyite
Research Division:Earth Sciences
Research Group:Geology
Research Field:Geochronology
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Earth Sciences
Author:Meffre, S (Dr Sebastien Meffre)
Author:Thompson, JM (Mr Jay Thompson)
ID Code:109847
Year Published:2016
Deposited By:CODES ARC
Deposited On:2016-07-04
Last Modified:2016-07-08
Downloads:0

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