A new atmospheric monitoring and verification technique to quantify CO2 emissions is currently being trialled in several different settings, at differing scales and for different types of possible CO2 leakage scenarios. This technique is called atmospheric tomography, which uses an array of sampling sites and a Bayesian inversion technique to simultaneously solve for the location and magnitude of a simulated CO2 leak. The first demonstration of the tomogrpahy inversion technique took place at the CO2CRC Ginninderra controlled release facility in Canberra with a CO2 release rate of 60 kg/day, and proved to be successful. This technique has now been trialed on data collected during the CO2CRC Otway Stage 2B well release experiment held during August-September 2011 using less expensive, but also less precise and less accurate CO2 sensors. The spatial scale of the Otway experiment was ten times larger than that of the Ginninderra experiment. Eight independent CO2 sensors (Vaisala CARBOCAP GMP343) were deployed at the Otway site where some 9 t/d of CO2 was released from a single well episodically over a period of about 2 months. The release of CO2 occurred for 7 hour periods, resulting in approximately 2.7 tonnes total of CO2 released per day. These independent sensors were located up to 700m from the release point and were evaluated for their accuracy, precision and suitability for the atmospheric tomography technique. Preliminary results will be presented.

Timing, nature and characteristics of gold deposits in the Broken River Province, NE QLD, Australia. Australian Journal of Earth Sciences.

Resolving the nature and geometry of major fault systems from geophysical and structural analysis; the Palmerville Fault in NE Queensland, Australia. Journal of Structural Geology, 28(11), 2097-2108.

The Palaeozoic tectono-metallogenic evolution of the northern Tasman Fold Belt System, Australia: Interplay of subduction rollback and accretion. Ore Geology Reviews, 30, 277-296.

Gold deposits of the Bardoc tectonic zone; a distinct style of orogenic gold in the Archaean Eastern Goldfields Province, Yilgarn Craton, Western Australia. Australian Journal of Earth Sciences, 54, 783-800.

Advanced methodologies for the analysis of databases of mineral deposits and major faults. Australian Journal of Earth Sciences, 55; 79-99.

Structural and geochemical characteristics of gold-related fluid events within the Menzies- Boorara shear system, Yilgarn Craton, Western Australia. Geological Society of Australia Abstracts 73, pp. 101.

Timing, nature and characteristics of orogenic gold deposits in the Broken River Province, northeast Queensland, Australia. Geological Society of Australia Abstracts 73, pp. 133.

Geochemistry of Early Palaeozoic basalts in the Hodgkinson Province: a key to tectono-magmatic evolution of the Tasman Fold Belt System in northeastern Queensland, Australia. International Journal of Earth Sciences (submitted)

The role of the Palmerville Fault to mineralization in NE QLD, Australia: results from fluid flow modeling. American Geophysical Union 2005 Joint Assembly.