A good crowd again assembled for Perth PESA evening talk on August 14, a double act on fluvial systems by John Holbrook (Texas Christian University) on the “Back-water Effect” on fluvial systems and Steve Hasiotis (University of Kansas) on the Neoichnology of the De Grey ephemeral river delta, Northwest WA
John Holbrook’s talk on the backwater effect provided an interesting discussion on fluvial architecture styles and an emerging tool and a work flow for predicting reservoir architecture, dimensions, volumes and heterogeneity in fluvial systems.
Steve Hasiotis described the diagnostic patterns of plant and animal traces (and diversity), lithofacies, soils, groundwater profiles, and salinities that are controlled by the climatic setting of the alluvial plain, delta plain, and proximal delta front settings of the dryland, ephemeral De Grey River and its wave-dominated delta. The trace fossil-lithofacies-pedofacies associations preserved in core are very useful to interpret reservoir geometry and continuity in core.
An informative and entertaining evening was had by all.
