Authors / CoAuthors
Mole, D. | Clark, A. | Bodorkos, S. | Lewis, C.
Abstract
Geoscience Australia’s Exploring for the Future program provides precompetitive information to inform decision-making by government, community and industry on the sustainable development of Australia's mineral, energy and groundwater resources. By gathering, analysing and interpreting new and existing precompetitive geoscience data and knowledge, we are building a national picture of Australia’s geology and resource potential. This leads to a strong economy, resilient society and sustainable environment for the benefit of all Australians. This includes supporting Australia’s transition to net zero emissions, strong, sustainable resources and agriculture sectors, and economic opportunities and social benefits for Australia’s regional and remote communities. The Exploring for the Future program, which commenced in 2016, is an eight year, $225m investment by the Australian Government. This Record presents new U-Pb zircon geochronology from the Loch-Lilly Kars and Lake Wintlow (as described by Clark et al. 2024) Belts of the central Delamerian Orogen (Foden et al., 2020; Gilmore et al., 2023; Mole et al., 2023), performed on Geoscience Australia’s (GA) sensitive high-resolution ion microprobe (SHRIMP). The eight samples presented here (three sedimentary and five igneous rocks; Table i) were collected during Geoscience Australia’s drilling campaign across the region, which consisted of 17 drill-holes (Pitt et al., 2023), using two drilling techniques (coiled-tube rotary and conventional diamond). This work was performed as part of the MinEx CRC National Drilling initiative (NDI) and Geoscience Australia’s Darling-Curnamona-Delamerian project of the Exploring for the Future program (EFTF; <a href="https://www.eftf.ga.gov.au/">https://www.eftf.ga.gov.au/</a>). The primary aims of this drilling were to (1) understand and constrain the geology of the southern Loch-Lilly Kars Belt; and (2) assess whether Cambrian magmatic rocks continued to the south-west in the Lake Wintlow Belt, marking a possible continuation of the Stavely Belt volcanic arc rocks observed in western Victoria (Bowman et al., 2019; Lewis et al., 2016; Lewis et al., 2015; Schofield, 2018; Figure i). As both these regions are covered, this new drilling and the geochronology they allow provide the first constraints on the age of these rock units. In addition, due to the lack of surface correlation and detailed geological mapping, these units currently have no officially-defined stratigraphic nomenclature and remain unnamed. For detailed information on all drill-holes completed as part of the survey, we direct readers to the summary report by Pitt et al. (2023): <a href="https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/148639">eCat 148639</a>.
Product Type
document
eCat Id
149417
Contact for the resource
Resource provider
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Point of contact
Digital Object Identifier
Keywords
- ( Project )
-
- Darling-Curnamona-Delamerian
- ( Project )
-
- EFTF – Exploring for the Future
- ( Project )
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- National Drilling Initiative (NDI)
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- zircon
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- U-Pb geochronology
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- SHRIMP (Sensitive High Resolution Ion Microprobe)
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- Delamerian Orogen
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- Loch Lilly-Kars Belt
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- Tasmanides
- theme.ANZRC Fields of Research.rdf
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- Geochronology
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- Published_External
Publication Date
2024-06-18T03:30:53
Creation Date
2024-03-22T05:00:00
Security Constraints
Legal Constraints
Status
completed
Purpose
Geochronology report on recent samples from GA's NDI Delamerian Margins drilling.
Maintenance Information
notPlanned
Topic Category
geoscientificInformation
Series Information
Record GA Record 2024/21
Lineage
<div>Data created March 19th 2024.</div>
Parent Information
Extents
[-45.2393, -25.1799, 133.389, 149.513]
Reference System
Spatial Resolution
Service Information
Associations
Association Type - informed
Architecture, evolution and fertility of the Delamerian Orogen: Insights from zircon
eCat Identifier - 148981,
UUID - 57358269-f001-456f-9be9-bec81a865f6b
Association Type - informed
The Delamerian Orogen: exposing an undercover arc
eCat Identifier - 148679,
UUID - 5fc80ca5-0be4-4dfe-b68d-c48a72886b1b
Source Information