Training - field workshop focused on saline systems

Salty systems and their tectonic evolution

Join your trip experts, Dr. John Warren and Dr. Ian Dyson, on this 12 day field workshop and experience first hand the diversity and economic significance of saline systems and sequence analysis in Australia’s evaporite geosystems (modern and ancient). This 12-day combined field and lecture course captures the diversity and geological importance of textures in saline depositional systems across the world famous regions of the Coorong, Marion Lake, Lake Eyre, and the Flinders Ranges, as well as core-based study of facies textures, distribution and architecture. This field workshops is suitable for 10-15 participants.

Flinder Ranges - Diapiric breccia - Blinman diapir
Dolomite Lakes , Salt Creek, Coorong region
Messinian halokinesis in the western Mediterranean

Field Site Objectives

  • Understand the depositional and diagenetic significance of evaporite, limestone and dolomite textures across all scales (from core to reservoir)
  • Learn to interpret mega-evaporite geometries in terms of tectonic and eustatic controls
  • Better appreciate implications of saline stacking and halokinetic patterns in terms of reservoir and non-reservoir distribution, their architecture, the heterogeneity and quality of reservoir in an evaporite sequence framework.
  • Integrate different scales of observation and interpretation from outcrop, to core, to wireline, to seismic scale.
  • Development and production scale modelling of facies distribution, stacking patterns, bed-scale stratigraphy, and the hierarchy of architectural elements within distributive saline depositional, halokinetic and diagenetic systems.

Possible classroom topics

  • Evaporite textures in a depositional and diagenetic framework
  • Brine hydrology and geochemistry as drivers of diagenesis
  • Ancient evaporites - why only partial Quaternary analogs?
  • Halotectonics, welds and poroperm prediction
  • Oil and gas accumulations in evaporite-entraining basins

Field sites and visits

  • Ancient halotectonic geosystems of the Flinders Ranges (outcropping diapir controls and sediment geometries)
  • Salt cores from a variety of Silurian, Cambrian and Neoproterozoic evaporites (depositional and halokinetic salt textures)
  • World-class salt pans and bajadas of Lake Eyre and Lake Torrens (overflight)
  • Modern salina tepees, stromatolites and bedded subaqueous sulphates of Marion Lake region (sub-salt reservoir analog)
  • Modern lacustrine Coorong carbonates (sub-salt reservoir analog)
Lake Eyre sunset