Dr Andrew La Croix

Postdoctoral Research Fellow - Sedi

UQ Energy Initiative
a.lacroix@uq.edu.au
+61 7 334 64154

Overview

I am a sedimentary geologist who is interested in the process-response dynamics that control the character and distribution of sedimentary facies. I study modern depositional environments to unravel their complexities and produce analogues for understanding the rock record. Most of my work aims to bridge the gap between academic interest and industry application, focusing on the sedimentary strata that comprise oil and gas or hydrogeological reservoirs. My most recent areas of interest are: (1) sequence stratigraphy, sedimentology, and geological modelling for carbon-storage in saline aquifers and depleted natural gas reservoirs in the subsurface. (2) the formation of fluid muds and their associated deposits in the nearshore realm (coastal rivers, deltas, estuaries); (3) the role of bioturbation in controlling porosity and permeability within siliciclastic reservoirs; and, (4) climate and weather controls on depositional cyclicity in the modern and rock record.

I am the sequence stratigrapher working on the UQ Energy Intiative - Deep Basin Aquifer Appraisal Project. My contribution aims to unravel the stratigraphic relationships in the Jurassic succession within the Surat Basin, Queensland, with emphasis on the Precipice Sandstone and Evergreen Formation. Through analysis of depositional environments, and tracing of time-stratigraphic surfaces across the basin, reservoir compartmentalization in the Precipice and the sealing capacity of the Evergreen can be better understood. These units show the greatest potential for carbon storage and sequestration (CCS) within the Surat Basin, but the storage capacity and subsurface flow characteristics are not well studied. In addition to the sequence stratigraphic study, I am building a series of static reservoir models in Petrel that will be utilized for dynamic flow modelling and carbon-injection simulation. These are all part of a bigger project to provide a scientific and social scientific basis to inform the discussion of CCS in the Surat Basin and elsewhere in Queensland.

Research Interests

  • Sequence Stratigraphy
  • Clastic Sedimentology
  • Ichnology
  • Reservoir Modelling
  • Carbon Sequestration
  • Petroleum Geoscience

Qualifications

  • Doctor of Philosophy, Simon Fraser University

Publications

View all Publications

Publications

Book Chapter

  • Dashtgard, Shahin E. and La Croix, Andrew D. (2015). Sedimentological trends across the tidal–fluvial transition, Fraser River, Canada. In Philip Ashworth, James Best and Daniel Parsons (Ed.), Developments in Sedimentology Volume 68: Fluvial-Tidal Sedimentology 1st ed. (pp. 111-126) Amsterdam , The Netherlands: Elsevier. doi:10.1016/b978-0-444-63529-7.00005-5

  • Gingras, Murray K., Baniak, Greg M., Gordon, Mark, Hovikoski, Jussi, Konhauser, Kurt O., La Croix, Andrew D., Lemiski, Ryan T., Mendoza, Carl A., Pemberton, S. George, Polo, Camilo and Zonneveld, J. P. (2012). Porosity and permeability in bioturbated sediments. In Dirk Knaust and Richard G. Bromley (Ed.), Developments in Sedimentology Vol. 64: Trace Fossils as Indicators of Sedimentary Environments 1st ed. (pp. 837-868) Amsterdam , The Netherlands: Elsevier. doi:10.1016/b978-0-444-53813-0.00027-7

Journal Article