Product catalogue
The Impact of Recalibrating Palynological Zones to the Chronometric Timescale: Revised Stratigraphic Relationships in Australian Permian and Triassic Hydrocarbon-bearing Basins
High-precision radiometric dating using Chemical Abrasion-Isotope Dilution Thermal Ionisation Mass Spectrometry (CA-IDTIMS) has allowed the recalibration of the numerical ages of Permian and Triassic spore-pollen palynozones in Australia. These changes have been significant, with some zonal boundaries in the Permian shifting by as much as six million years, and some in the Triassic by more than twice that. Most of the samples analysed came from eastern Australian coal basins (Sydney, Gunnedah, Bowen, Galilee) where abundant volcanic ash beds occur within the coal-bearing successions.
The recalibrations of these widely used palynozones have implications for the dating of geological events outside the basins from where samples were obtained. Our revised dates for the Permian palynozones can now be applied to all Permian basins across Australia, including the Perth, Carnarvon, Canning and Bonaparte basins (along the western and northern continental margins), the Cooper and Galilee basins (in central Australia), and the Bowen, Gunnedah and Sydney basins (in eastern Australia). Revised regional stratigraphic frameworks are presented here for some of these basins.
The impact of an improved calibration of biostratigraphic zones to the numerical timescale is broad and far-reaching. For example, the more accurate stratigraphic ages are the more closely burial history modelling will reflect the basin history, thereby providing control on the timing of kerogen maturation, and hydrocarbon expulsion and migration. These improvements can in turn be expected to translate in to improved exploration outcomes.
We have initially focused on the Permian and provide preliminary results for the Triassic, but intend to expand recalibrations to include Jurassic, Cretaceous and Paleozoic successions beyond the Permian. Preliminary data indicates that significant changes to these calibrations are also likely.
Simple
Identification info
- Date (Creation)
- 2017-10-01T00:00:00
- Date (Publication)
- 2017-10-30T00:00:00
- Citation identifier
- Geoscience Australia Persistent Identifier/http://pid.geoscience.gov.au/dataset/114107
- Cited responsible party
-
Role Organisation / Individual Name Details Co-author Smith, T.E.
1
- Purpose
-
Poster presentation at AAPG-ICE, London, 2017
- Status
- Point of contact
-
Role Organisation / Individual Name Details Owner Barrett, A.
Commonwealth of Australia (Geoscience Australia)
Voice Author Smith, T.E.
Commonwealth of Australia (Geoscience Australia)
Voice Resource provider RD
Commonwealth of Australia (Geoscience Australia)
Voice
- Spatial representation type
- Topic category
-
- Geoscientific information
Extent
))
- Maintenance and update frequency
- Not planned
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
- Keywords
-
-
Biostratigraphy
-
- Keywords
-
-
Geochronology
-
- Keywords
-
-
Permian
-
- Keywords
-
-
CA-IDTIMS
-
- Keywords
-
-
Sydney Basin
-
- Keywords
-
-
Gunnedah Basin
-
- Keywords
-
-
Triassic
-
- Keywords
-
-
Galilee Basin
-
- Keywords
-
-
Bowen Basin
-
- Keywords
-
-
Canning Basin
-
- Keywords
-
-
Cooper Basin
-
- Australian and New Zealand Standard Research Classification: Fields of Research
-
-
Earth Sciences
-
- Keywords
-
-
Published_External
-
Resource constraints
- Title
-
Creative Commons Attribution 4.0 International Licence
- Alternate title
-
CC-BY
- Edition
-
4.0
- Access constraints
- License
- Use constraints
- License
Resource constraints
- Title
-
Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
-
Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice
- OnLine resource
-
Download the poster (pdf)
Download the poster (pdf)
- Distribution format
-
-
pdf
-
Resource lineage
- Statement
-
Poster presentation at AAPG-ICE London 2017
- Hierarchy level
- Dataset
Metadata constraints
- Title
-
Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
-
urn:uuid/1438e46c-9a9b-4d0b-b191-2751fa773632
- Title
-
GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
-
Role Organisation / Individual Name Details Point of contact Barrett, A.
Commonwealth of Australia (Geoscience Australia)
Voice
Type of resource
- Resource scope
- Document
- Name
-
GA publication: Poster
Alternative metadata reference
- Title
-
Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/114107
- Date info (Creation)
- 2016-08-25T10:07:26
- Date info (Revision)
- 2018-04-20T05:51:52
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
- https://pid.geoscience.gov.au/dataset/ga/122551