ANSTO User Meeting 2019

Session

Session 11

2 Dec 2019, 15:30

Muse

106. How long was the LGM in East Antarctica? Insights from in-situ 14C dating of bedrock surfaces

Dr Duanne White (University of Canberra)

02/12/2019, 15:30

Earth, interstellar and extreme environments

Oral

The duration of ice advance and retreat in Antarctica provides insight into its overall sensitivity to environmental thresholds, the response time of the ice sheet to climate and sea level perturbations. While measuring the timing of ice retreat has become relatively routine through the advent of Be-10 exposure dating, determining the onset and the duration of glaciation remains difficult due...

40. Multimodal, multiscale chemical and structural imaging of vein-formation processes

Michael Jones (QUT)

02/12/2019, 15:45

Earth, interstellar and extreme environments

Oral

Veins are opening-mode fractures in rocks filled with minerals crystallised from a fluid injected during the cracking process. They occur throughout the entire lithosphere of our planet and constitute important fast fluid pathways in otherwise dense, impermeable rock1. In addition, veins trap precious ores such as gold and are routinely targeted by the resource industry2,3. Moreover,...

62. Two birds with one stone: leaching of alkaline mineral wastes enhances CO2 sequestration and concentrates trace metals

Dr Jessica Hamilton (Australian Synchrotron (ANSTO))

02/12/2019, 16:00

Earth, interstellar and extreme environments

Oral

The mineral wastes produced by ultramafic mines (i.e. Cu–Ni–PGE, podiform chromite, diamondiferous kimberlite and historical chrysotile) are ideal materials for sequestering CO2 via mineral carbonation. This natural process traps atmospheric CO2 in mineral form via weathering of Mg or Ca-rich silicate and hydroxide minerals to form Mg-carbonate. Due to a higher surface area, mineral...