Conveners
Concurrent Session 1: Earth & Environment
- Louise Fisher ()
Susan Cumberland
(Australian Synchrotron)
24/11/2016, 10:30
Earth and Environment
Oral
The relationship between uranium (U) and organic matter (OM) has received increasing attention in the fields of mining and remediation. Sediments and wetlands with high (%) OM content can accumulate U from groundwater, and over geological timescales lead to ore formations. The Mulga Rock deposit (13K tonnes of U) near Kalgoorlie, WA is one example in Australia, with many other examples found...
Dr
Weihua Liu
(CSIRO)
24/11/2016, 11:00
Earth and Environment
Oral
Element substitution that occurs during fluid-rock interaction permits assessment of fluid composition and interaction conditions in ancient geological systems, and provides a way to fix contaminants from aqueous solutions. We conducted a series of hydrothermal mineral replacement experiments to determine whether a relationship can be established between arsenic (As) distribution in apatite...
Mr
David Child
(ANSTO)
24/11/2016, 11:15
Earth and Environment
Oral
The radiological residues at the former weapons testing sites in Australia, at Maralinga, Emu and the Monte Bello Islands, often occur in particulate form (“hot particles”). Large numbers of these particles were emitted from nuclear test detonations and non-nuclear tests. For example, more than 3000 readily identifiable particles can occur in the soil of a single square meter, in a plume that...
Ms
Rebecca Auchettl
(La Trobe University)
24/11/2016, 11:30
Earth and Environment
Oral
Titan is Saturn’s largest moon and is the only planetary body in our solar system with a dense atmosphere that is comparable to Earth. Photochemical processing of the two major atmospheric components (N2 and CH4) produce a suite of hydrocarbon and nitrile species, from small hydrocarbons to large complex organic molecules (COMs) and polymeric nitriles (tholins). Tholins aggregate and coagulate...
Ms
Jing Song
(Sun Yat-sen University; CSIRO Manufacture), Mr
Yuqi Ren
(CSIRO)
24/11/2016, 11:45
Earth and Environment
Oral
The Saturated Fine-Grained (SFG) soil, as one type of important materials of dredger mud, is related closely to bearing capacity of foundation in consolidation progress of reclamation engineering. It is necessary to research the quantitative mechanism between micro and macro mechanics by microstructure evolution of SFG soil consolidation. However, it is difficult to obtain the 3D...
Mr
Mahmut Ruzi
(Latrobe University)
24/11/2016, 12:00
Earth and Environment
Oral
Formic acid (HCOOH) is the most abundant trace gas organic acid in the atmosphere, resulting from oxidation or photochemical processing of alkanes from biogenic and anthropogenic sources.[1] Formic acid dissolves well in water and thus contributes significantly to rain acidity in remote regions. Due to its good solubility it is believed that formic acid contributes to cloud condensation.[2] It...
Dr
Guillermo Narsilio
(Australian Research Conuncil Future Fellow, The University of Melbourne), Dr
Mahdi Disfani
(Senior Lecturer in Geotechnical Engineering)
24/11/2016, 12:15
Earth and Environment
Oral
Synchrotron Radiation-based X-ray Micro-Computed Tomography (SR-µCT) is a leading edge technology allowing unprecedented grain-scale observations helping with a better understanding of geomaterial behavior. The higher energy level used in this technique allows rapid scanning of geomaterials under high stress levels to study the progress of crushing and crack propagation. This paper...
