Oldest Cretaceous sequence, Giralia Anticline, Carnarvon Basin, Western Australia: late Ha

Late Hauterivian-Barremian stratigraphic and paleontological data from the oldest Cretaceous sequence in the Giralia Anticline, Carnarvon Basin. The dataset, sourced from the Australian Ocean Data Network, describes outcrop and well data, including the Birdrong Sandstone and Muderong Shale formations. It was last updated on 2026-04-28.

Use Cases

• Modeling transgressive and highstand systems tracts based on described sediment composition and biofacies changes.
• Analyzing paleoclimate signals based on growth-ring analysis of fossil conifer wood.
• Biostratigraphic correlation based on palynomorph and foraminiferal assemblages.
• Studying marine facies retrogradation and aggradation patterns during the Early Cretaceous.

Strengths

• Includes detailed biostratigraphic assessment of a defined late Hauterivian-Barremian sequence.
• Describes specific lithological units with thicknesses (e.g., 10 m Birdrong Sandstone, 56 m Muderong Shale).
• Contains multi-faceted evidence including fossil wood, ichthyosaur bones, ammonites, and palynomorphs.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The age of the upper Muderong Shale and a probable Windalia Sand Member is noted as uncertain.

Provenance

Source

Australian Ocean Data Network

Collection Method

Outcrop description and biostratigraphic assessment of the Giralia Anticline and the Giralia No. 1 well.

Time Range

Late Hauterivian-Barremian (Early Cretaceous)

Freshness

Last updated 2026-04-28 13:19:41.293467; freshness should be verified.

Geography

Giralia Anticline, Carnarvon Basin, Western Australia