PESA QLD Lunch, 20 June : Mega-intrusions and Volcanic ruins: A tour of magmatism in the Carnarvon Basin, WA

This month PESA Queensland welcomes Dr. Michael Curtis to present a technical luncheon looking at the fascinating volcanic history of the Carnarvon Basin and implications for exploration.

The Technical Lunch will be held at the Brisbane Hilton Hotel, in Room 83 (Level 8).

For detailed directions, see explanation below.

Please note the Early Bird ticket pricing cut-off times described below.

Presentation Abstract:

The Northern Carnarvon Basin formed as a result of Late Jurassic rifting, and Early Cretaceous breakup of Greater India from the Australian continent.  Magma was emplaced into the Exmouth Plateau and Exmouth Sub-Basin over an area of ~50,000 km².  Until recently the spatial distribution of this igneous system, and hence its potential impact on regional petroleum systems, was relatively unknown.  The only references to the magmatic system were 1990s ‘blob’ maps created using 100+ km spaced 2D seismic, magnetic and gravity data, and references of penetrations of igneous rocks in well completion reports from ~8 wells and boreholes.

New interpretive work (the essence of my PhD), utilising SLB & TGS ultra-broadband 3D seismic data covering much of the Exmouth Plateau and Exmouth Subbasin, reveals the igneous system in all its glory!  In this talk we will tour both its intrusive and extrusive components, asking why it is the way it is and what its current configuration might have meant for the development of Carnarvon Basin petroleum systems.  We will attempt to answer why some intrusions are of record-breaking proportions (170+ km long), while others nearby are much much smaller (3 to 5 km diameter).  We’ll also look at the eroded ruins of volcanoes (that until recently hadn’t been known to exist at all) and consider the original size of the volcanic complex, and the implications of volcano erosion on regional reservoir quality.

Time permitting, we’ll round off with an example or two of how not to drill in igneous affected areas.

Tickets for the Technical Luncheon can be purchased below.

Please be advised of the early bird cut-off date.

Early bird pricing will now remain available up until Monday, 17 June 12:00 PM  after which, standard pricing will come into effect.

To avoid disappointment please register before that date and time.

Late ticket sales up to Wednesday, 19 June 12:00PM will be available for $95 for all tickets – subject to availability. Please note dietary requirements can not be guaranteed for late tickets. 

The venue location can be accessed by two means:

1) Entry from Queen Street Mall
Take the lifts to Level 6, and walk to the guest lifts located in the centre of the main atrium and take the lift to Level 8. Delegates will need to turn left out of the guest lifts and walk down the hallway to Room 83.

2) Entry from Elizabeth Street
Enter the foyer located on 190 Elizabeth Street, and take the lifts to Level 6 (Main Foyer). Walk to the guest lifts located in the centre of the main atrium and take the lift to Level 8. Delegates will need to turn left out of the guest lifts and walk down the hallway to Room 83.

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