West Musgrave 3D palaeovalley model report and data

As part of the $225 million Exploring for the Future programme, Geoscience Australia have undertaken an investigation into the resource potential of the Officer-Musgrave-Birrindudu region. Part of this project focusses on characterising palaeovalley groundwater resources within the West Musgrave region of Australia. This record presents a three-dimensional palaeovalley model and describes the method used in its generation. Understanding the 3D architecture of palaeovalleys is an important component of conceptualising the shallow groundwater system. In this region groundwater is the only significant water resource, and is critical for supporting local communities, industries and the environment. The data products released alongside this record are a base of gridded Cenozoic surface, a grid of the thickness of the Cenozoic and polygons defining the spatial extent of palaeovalleys.

The study area encompasses the upper reaches of several large palaeovalleys. These valleys incised mostly crystalline rocks of the Musgrave Province and sedimentary rocks of the adjoining basin during the late Cretaceous. Subsequently, valleys were filled by Cenozoic-aged sediments, which now form the aquifers and aquitards of the modern-day groundwater system. Palaeovalley architecture has been shaped by a complex interplay of climatic, tectonic, and geological factors over geological time. In some cases, tectonic deformation has caused tilting or disruption of palaeovalleys with implications for groundwater flow.

We modelled the base of Cenozoic surface across the project area and used this geological surface to identify palaeovalleys. The modelling process used airborne electromagnetic conductivity models, borehole data and geological outcrop as model inputs. Using these data, we interpreted the base of Cenozoic along AEM flightlines, at borehole locations and at the surface where Pre-Cenozoic geology was cropping out. These data were gridded to generate the base of Cenozoic surface. This surface was then used as the basis for interpreting palaeovalley extents.

The resulting model is adequate for its purpose of better understanding the groundwater system. However, the model has considerable uncertainty due to uncertainty in the model inputs and data sparsity. The model performed much better within the centre of the project area within the Musgrave Province compared to the adjoining basins.

Simple

Identification info

Date (Creation)
2023-12-22
Date (Publication)
2024-02-28T00:05:10
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/149152

Citation identifier
Digital Object Identifier/https://dx.doi.org/10.26186/149152

Cited responsible party
Role Organisation / Individual Name Details
Publisher

Commonwealth of Australia (Geoscience Australia)

 Voice
Author

Symington, N.

 Internal Contact
Author

Halas, L.

 Internal Contact
Author

Smith, M.

 External Contact
Author

Thiele, Z.

 Internal Contact
Author

Lester, J.

 Internal Contact
Author

Sundaram, B.

 Internal Contact
Author

LeyCooper, A.Y.

 MEG Internal Contact
Name

Record

Issue identification

RECORD 2024/007

Purpose

The purpose of this product is to release three data products relating to the 3D modelling of palaeovalley architecture in the West Musgrave Province. The three datasets are a base of Cenozoic surface, a Cenozoic thickness grid and palaoevalley extents. The accompanying report describes these products, how they were made and discusses the strengths and limitations of the model.

Status
Completed
Point of contact
Role Organisation / Individual Name Details
Point of contact

Commonwealth of Australia (Geoscience Australia)

 Voice
Point of contact

Lester, J.

 MEG Internal Contact
Resource provider

Minerals, Energy and Groundwater Division

 External Contact
Spatial representation type
Topic category
  • Geoscientific information

Extent

N
S
E
W


Temporal extent

Time period
2023-12-21
Maintenance and update frequency
As needed

Resource format

Title

Product data repository: Various Formats

Website

Data Store directory containing the digital product files

Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes

Project

  • EFTF – Exploring for the Future

Project

  • Officer-Musgrave

Keywords

  • palaeovalley

Keywords

  • groundwater

Keywords

  • airborne electromagnetics interpretation

Keywords

  • 3D modelling

theme.ANZRC Fields of Research.rdf

  • Geology

Keywords

  • Published_External

Resource constraints

Title

Creative Commons Attribution 4.0 International Licence

Alternate title

CC-BY

Edition

4.0

Website

https://creativecommons.org/licenses/by/4.0/

Addressee
Role Organisation / Individual Name Details
User

Any
Use constraints
License
Use constraints
Other restrictions
Other constraints

© Commonwealth of Australia (Geoscience Australia) 2023

Resource constraints

Title

Australian Government Security Classification System

Edition date
2018-11-01T00:00:00
Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification
Unclassified
Classification system

Australian Government Security Classification System

Associated resource

Association Type
Operated on by
Title

West Musgrave Base of Cenozoic Surface WMS

Citation identifier
149352

Citation identifier
49536c18-1af1-410a-994f-2971ee960cea

Website

http://pid.geoscience.gov.au/service/ga/149352

Link to eCat metadata record landing page

Associated resource

Association Type
Operated on by
Title

West Musgrave Base of Cenozoic Surface WMTS

Citation identifier
149353

Citation identifier
1612f09c-5fe6-43a5-9da8-44d15d4775ae

Website

http://pid.geoscience.gov.au/service/ga/149353

Link to eCat metadata record landing page

Associated resource

Association Type
Operated on by
Title

West Musgrave Base of Cenozoic Surface WCS

Citation identifier
149354

Citation identifier
19f6b090-1ab4-4c26-9d0c-d027b25c5f20

Website

http://pid.geoscience.gov.au/service/ga/149354

Link to eCat metadata record landing page

Language
English
Character encoding
UTF8

Distribution Information

Distributor contact
Role Organisation / Individual Name Details
Distributor

Commonwealth of Australia (Geoscience Australia)

 Voice facsimile
OnLine resource

Download the Record (pdf) [5.7 MB]

Download the Record (pdf) [5.7 MB]

Distribution format

  • pdf

    File decompression technique

    nil

OnLine resource

Download the data (zip) [6.5 MB]

Download the data (zip) [6.5 MB]

Distribution format

  • zip

    File decompression technique

    unzip

OnLine resource

West Musgrave Base of Cenozoic Surface WCS

West Musgrave Base of Cenozoic Surface WCS

Distribution format

  • OGC:WCS

OnLine resource

West Musgrave Base of Cenozoic Surface WMTS

West Musgrave Base of Cenozoic Surface WMTS

Distribution format

  • OGC:WMTS

OnLine resource

West Musgrave Base of Cenozoic Surface WMS

West Musgrave Base of Cenozoic Surface WMS

Distribution format

  • OGC:WMS

Resource lineage

Statement

The base of Cenozoic model released here was generated in the Petrel software by gridding input data. These data include AEM conductivity data released by Geoscience Australia ( https://pid.geoscience.gov.au/dataset/ga/145265 , https://dx.doi.org/10.26186/147688 and https://dx.doi.org/10.26186/146278 ), borehole data compiled from a range of sources and surface geology from the 1:1 million scale dataset ( https://dx.doi.org/10.26186/74619).

Reference System Information

Reference system identifier
EPSG/GDA2020 / geographic 2D (EPSG: 7844)

Metadata constraints

Title

Australian Government Security Classification System

Edition date
2018-11-01T00:00:00
Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification
Unclassified

Metadata

Metadata identifier
urn:uuid/3abfd818-de0f-4e1d-b787-f8b8d169adc8

Title

GeoNetwork UUID

Language
English
Character encoding
UTF8
Contact
Role Organisation / Individual Name Details
Point of contact

Commonwealth of Australia (Geoscience Australia)

 Voice
Point of contact

Lester, J.

 MEG Internal Contact

Type of resource

Resource scope
Document
Name

GA Record

Alternative metadata reference

Title

Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier
eCatId/149152

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/3abfd818-de0f-4e1d-b787-f8b8d169adc8

Date info (Creation)
2024-02-27T22:29:08
Date info (Revision)
2024-02-27T22:29:08

Metadata standard

Title

AU/NZS ISO 19115-1:2014

Metadata standard

Title

ISO 19115-1:2014

Metadata standard

Title

ISO 19115-3

Title

Geoscience Australia Community Metadata Profile of ISO 19115-1:2014

Edition

Version 2.0, September 2018

Citation identifier
http://pid.geoscience.gov.au/dataset/ga/122551

 
 

Spatial extent

N
S
E
W


Keywords

EFTF – Exploring for the Future Officer-Musgrave
theme.ANZRC Fields of Research.rdf
Geology

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