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Title: Summary of results. NTGS laser ablation ICP-MS U-Pb and Lu-Hf geochronology project: Roper Group (McArthur Basin), overlying ungrouped units (Beetaloo Sub-basin), Renner Group (Tomkinson Province), and Tijunna Group (Birrindudu Basin)
Report ID: NTGS Record 2018-007
Year: 2018
Author: Munson, TJ
Thompson, JM
Zhukova, I
Meffre, S
Beyer, EE
Woodhead, JD
Whelan, JA
Geological Province: McArthur Basin
Beetaloo Sub-basin
Tomkinson Province
Birrindudu Basin
Tennant Region
Map250: Urapunga SD5310
Mount Young SD5315
Tanumbirini SE5302
Beetaloo SE5306
Helen Springs SE5310
Victoria River Downs SE5204
Subject: Zircon
Isotope Geochemistry
Stratigraphy: Roper Group
Renner Group
Tijunna Group
Jamison Sandstone
Hayfield Sandstone
Hayfield Mudstone
Abstract: Sixteen samples of quartz sandstone from the uppermost successions of the informally named greater McArthur Basin in the Northern Territory were selected for laser ablation inductively coupled plasma mass spectrometer (LA-ICP-MS) U-Pb zircon dating and complementary multi-collector laser ablation inductively coupled plasma mass spectrometry (MC-LA-ICP-MS) Lu-Hf isotope analyses. The 16 analysed samples comprised eight from the Mesoproterozoic Roper Group (McArthur Basin),three from ungrouped Neoproterozoic sedimentary units overlying the Roper Group in the Beetaloo Sub-basin (McArthur Basin), four from the Mesoproterozoic Renner Group (Tomkinson Province), and one from the Mesoproterozoic Tijunna Group (Birrindudu Basin). All samples yielded multiple zircon detrital age populations; the complementary Lu-Hf isotope analyses indicated that these zircons were all derived from multiple juvenile to reworked evolved crustal sources with varying calculated crustal residence ages.
Publisher: Northern Territory Geological Survey
ISSN: 1443-1149
ISBN: 9780724573393 (PDF)
Document Type: NTGS Record
Access Constraint: Creative Commons Attribution 4.0 International (CC BY 4.0). Please observe and retain any copyright or related notices that accompany this material and give attribution to: Northern Territory of Australia (Northern Territory Geological Survey).
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