Geological Basin Structural Elements

dataset: GEOL_BASIN_STRUCT_ELE
Executive summary: As part of the Victorian Gas Program (VGP), the Geological Survey of Victoria (GSV) is studying the Otway Basin's petroleum systems components (reservoir, seal and source), to assess its petroleum prospectivity and to estimate the potential for further conventional gas discoveries onshore and offshore within Victoria's jurisdiction. Reference to geological structural elements (e.g. the Penola Trough or Port Campbell Embayment) enable geologists to convey ideas about geological features in specific locations. Throughout the VGP, geological structural elements such as troughs or depocentres, platforms, basement and topographic highs have been referenced. As the studies progressed, it was evident that a standard set of names and boundaries for structural elements in the Victorian Otway Basin needed to be defined. New data and interpretations arising from VGP studies, such as the airborne gravity data (Carter et al., 2019) and the 3D geological framework model (Romine et al., 2020), were used in this study to accurately define the boundaries of structural elements. Existing interpretations and literature were also consulted and combined with the boundary definitions to develop a set of georeferenced polygons or shapefiles, defining the major structural elements of the Victorian Otway Basin: Early Cretaceous depocentres, Late Cretaceous depocentres and platforms, and basement and topographic highs. From previous publications, consistent naming had been established for most structural elements; however, some elements had multiple names. Most previously identified structural elements were ill-defined with only small-scale illustrations available. The names used to define the structural elements in this study were resolved by considering the evolution of the understanding of the Otway Basin, along with historical precedence and common usage in the literature. This review of Victorian Otway Basin structural elements provides a detailed set of output files (Attachment A1). These can be used as a consistent reference for future mapping and modelling studies. The structural elements defined in this study are not considered a definitive list. Further refinements should be possible if new data is acquired over areas where data availability limited the interpretation in this study. Bibliographic reference: Vujovic, A., Goldie Divko, L.M. & Eid, R., 2021. A review of structural elements, Otway Basin, Victoria. VGP Technical Report 64. Geological Survey of Victoria, Department of Jobs, Precincts and Regions, Melbourne, Victoria.
 
Citation proposal Citation proposal
(2022)

Geological Basin Structural Elements

Department of Energy, Environment and Climate Action
 

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Identifiers and Keywords

ANZLIC Id
ANZVI0803009405 
Victorian Spatial Data Library (VSDL) Schema
MINERALS:GEOL_BASIN_STRUCT_ELE 
Jurisdiction
Victoria 
Topic category
  • Geoscientific information
 

Resource Constraints

Use limitation
The data is subject to Creative Commons CC-BY 4.0 licence. Subject to licence conditions 
Classification
Unclassified  
Creative Commons Attribution 4.0 (CC-BY)
 

Other Dataset Details

Date ( Revision )
2022-03-18
Date ( Publication )
2023-11-23T11:42:11
Status
Completed  
Purpose
Geological interpretation of structures within the Otway basin. 
Supplemental Information
Relationship to other Datasets: The polygon edges are constructed from the corresponding geological contacts and faults layer Related Documents: None 
Maintenance and update frequency
Irregular  
Maintenance date ( Publication )
2022-03-12T04:11:20
 

Spatial

Spatial representation type
Vector  
Description
Victoria 
Reference system identifier
4283

N
S
E
W


 

Temporal

Begin date
2022-02-25 
End date
2022-02-25 
 

Resolution

Horizontal Accuracy
2500m  
 

Quality

Conceptual Consistency
Good 
Missing Data
Otway basin, partly offshore Completeness Verification: Metadata Last Reviewed by Custodian: Feb 2022 
Excess Data
nominally 1:250 000 
Attribute Quality
Attributes are mostly qualitative data. Validated for quality in 2022 in order to meet GSV standards. 
Positional Accuracy
The polygons are generally accurate to 1:250,000 
 

Lineage

Statement
Dataset Source: Victorian Gas Program 64 report: http://earthresources.efirst.com.au/product.asp?pID=1247&cID=68 Dataset Originality: Derived 
 

Attributes

Column Name Obligation Unique Data Type Data Length Data Precision Data Scale Reference Table Owner Reference Table Name Reference Table Code Column Name Short Column Name Definition
REFID O N VARCHAR2 6 REFID
SE_ANNO_CAD_DATA O N BLOB 4000 SEANNOCAD
UFI O N NUMBER 22 0 UFI
TYPE O N VARCHAR2 50 TYPE
AGE O N VARCHAR2 100 AGE
NAME O N VARCHAR2 255 NAME
BASIN O N VARCHAR2 50 BASIN
 

About the Metadata Record

Metadata identifier
urn:uuid / 6831a69e-d140-56c9-b3d1-0a26c5a0e96e

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Resource Type
Dataset  
Date info ( Creation )
Date info ( Revision )
2022-03-18
Standard Name
ISO 19115-3:2018 
Profile Name
DELWP Profile 
Profile Version
Version 1 
Profile Date
2019-05-24  
 

Metadata Constraints

Classification
Unclassified  
 
 

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