Cretaceous Stratigraphy And Paleoclimate Of Giralia Anticline

Outcrop and well data describe the oldest Cretaceous sequence in Western Australia's Giralia Anticline. The dataset includes biostratigraphic assessments of the late Hauterivian-Barremian Birdrong Sandstone and Muderong Shale formations. It was published by the Australian Ocean Data Network.

Use Cases

• Analyze sediment composition and palynomorph assemblages to reconstruct marine facies retrogradation and aggradation.
• Correlate the Muderongia australis Zone biostratigraphy from the Birdrong Sandstone across widely separated Australian basins.
• Use fossil conifer wood growth-ring analysis to model seasonal humid mesothermal paleoclimate conditions.
• Study ichthyosauran bones, plesiosauran remains, and ammonites for paleobiodiversity assessments at the Hauterivian-Barremian boundary.

Strengths

• Detailed stratigraphic column with specific unit thicknesses: 10 m Birdrong Sandstone overlain by 56 m Muderong Shale.
• Biostratigraphic zonation provided for key intervals using the Muderongia australis Zone.
• Integrates outcrop data from the Giralia Anticline with well log data from Giralia No. 1.

Limitations

• Age uncertainty for the upper Muderong Shale and a 10 m thick sandstone unit.
• Sample data and raw measurements are not provided in a structured, machine-readable format.
• Spatial coverage is limited to a single anticline structure in the Carnarvon Basin.

Provenance

Source

Australian Ocean Data Network.

Collection Method

Field description and biostratigraphic assessment of outcrop and well data.

Time Range

Late Hauterivian-Barremian (Early Cretaceous).

Freshness

null

Geography

Giralia Anticline, Carnarvon Basin, Western Australia.