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Title: NTGS laser ablation ICP-MS U-Pb geochronology project: Habgood and Balma groups (McArthur Basin), Namerinni Group (Tomkinson Province), and unnamed units from drillholes NDW12-01 and Jamison-1, July 2016-May 2019
Report ID: NTGS Record 2020-009
Year: 2020
Author: Munson, TJ
Thompson, JM
Meffre, S
Orth, K
Drillhole/Well Name: NDW12-01;  Jamison 1
COREDAT ID: 4430;  1937
Geological Province: McArthur Basin
Beetaloo Sub-basin
Tomkinson Province
Georgina Basin
Map250: Arnhem Bay SD5303
Blue Mud Bay SD5307
Helen Springs SE5310
Daly Waters SE5301
Tanumbirini SE5302
Map100: Arnhem 6173
Blue Mud Bay 6070
Muckaty 5660
Daly Waters 5565
Warramban 5664
Subject: Geochronology
Stratigraphy: Habgood Group
Gwakura Formation
Balma Group
Yarrawirrie Formation
Namerinni Group
Jeromah Formation
Willieray Formation
Roper Group
Kalkarindji Suite
Hayfield mudstone
Abstract: Six samples, four sandstones and one metasandstone from the informally named greater McArthur Basin, and another sandstone from an unnamed succession overlying the Beetaloo Sub-basin in the Northern Territory, were selected for laser ablation inductively coupled plasma mass spectrometer (LA-ICP-MS) U-Pb zircon dating. The five greater McArthur Basin samples include one sample each from the Habgood and Balma groups in the northern McArthur Basin; two from the Namerinni Group of the Tomkinson Province; and one from ungrouped sedimentary rocks intersected in drillhole NDW12-01 in the Daly Waters Fault Zone. The sixth sample is from ungrouped sedimentary rocks (unassigned to a basin succession) intersected in drillhole Jamison-1 in the Beetaloo Sub-basin area. All samples yielded multiple zircon detrital age populations that both improve the constraints on the ages and stratigraphic affinities of the sampled formations, and assist in identifying potential provenance source areas.
Publisher: Northern Territory Geological Survey
ISSN: 1443-1149
ISBN: 9780724573738 (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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