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Publication Name: PESA Webinar Series
Authors: Fiona Burns (Task Fronterra)
Date Published: November 2025
Abstract:
Historically, sedimentological interpretations of the Kingia Sandstone in the northern Perth Basin have relied heavily upon conventional sedimentary facies analysis of a limited dataset integrating core with well-log data. This paper however provides invaluable insights into the high-resolution depositional modelling of the Kingia Sandstone using sedimentary facies analysis integrated with detailed ichnological studies. Historic cored wells have also been re-evaluated utilising an ichnological approach, while newly released cored wells have been interpreted, also using this integrated approach. Cores from a variety of wells including but not limited to West Erreguella-4, South Erreguella-1, Mountain Bridge-1, Corybas-1, Waitsia-1, Waitsia-2 and Waitsia-3 have been included in this study.The results allow the subdivision of the Kinga Sandstone into numerous sub-environments reflecting marginal to fully marine sub-environments. The Kinga sandstone is interpreted to represent deposition in a wave-dominated deltaic system, with trace-fossil assemblages key to the evaluation of stress levels (e.g. freshwater dilution) in the system. Local sharp-based shoreface packages, abruptly overlying shelfal deposits, are interpreted to represent forced regressive events during overall highstand progradation of the Kingia shoreface system.