The Three Sisters at Echo Point, Katoomba - image courtesy Paul Harvey

New South Wales

Click here for the February 2017 Newsletter

Talks & Events

Monthly Division Meetings
Date: Talks are held the 2nd Thursday of the month
Location: The King Street Brewhouse, Sydney

Info: meetings@nsw.gsa.org.au

9 March - New South Wales Division Meeting
Topic: Diagenetic Influences on the Oceanic Budget of Rare Earth Elements
Speaker: Dr April Abbott, Lecturer, Macquarie University
Location: The King Street Brewhouse, Sydney
Time: 5:30pm
Abstract: The neodymium isotope composition (εNd) of seawater is a common tracer of ocean circulation.  For paleoceanographic applications, the εNd recovered from sedimentary authigenic phases is assumed to reflect the overlying bottom water εNd.  However, ambiguities in the processes governing the εNd distribution and in the modern budget hamper interpretations of this tracer.We determined pore fluid rare earth element (REE) concentrations and εNd in near-surface sediments representing shelf-to-slope settings. The sediments are characterized by varying degrees of net iron reduction, with pore fluids from the shelf sites being generally ferruginous, and the slope sediments having less-pronounced iron reduction zones that originate deeper in the sediment package. REE concentrations show maxima in shallow (upper 2–10 cm) subsurface pore fluids, with concentrations two orders of magnitude higher than seawater. These pore fluid enrichments highlight the importance of a sedimentary source of REEs to the ocean’s water column. Furthermore, the paired measurements of the neodymium isotopic composition (εNd) of the water column, sedimentary pore fluids, and sediment leachates suggest that pore fluids ultimately determine the εNd of the authigenic phases. The εNd of these pore fluids is not equivalent to bottom water εNd. Therefore, an improved understanding of the early diagenetic processes determining pore fluid εNd is necessary for interpretations of the authigenic record. Here, I present data supporting a bottom-up budget for neodymium in the modern ocean and coupled with SEM images to better characterize the authigenic phases targeted in paleoceanographic reconstructions.

13 April - New South Wales Division Annaul General Meeting
Location: TBA
Notes: The first items on the agenda for the AGM are the elections for the following positions on the NSW division committee:
- Chair
Secretary
Treasurer
Newsletter
Editor
If you are interested in nominating anyone for a position on the NSW Divisional committee you can nominate at the AGM or return a signed & scanned nomination form to Mira van der Ley (Newsletter Editor, NSW Division; m.vanderley@unsw.edu.au) by 6th April.
Previous Division Meetings
9 February 2017
Talk: Post-Pangea plate tectonics and geodynamics: Insights from numerical Earth models for basic research and industry
Speaker: 
Dr Sabin Zahirovic, Postdoctoral Research Associate, EarthByte Group, Basin GENESIS Hub School of Geosciences, The University of Sydney

13 October 2016

Talk: Tapping into regional New South Wales: a community science program investigating household drinking water contamination
Speaker: Paul Harvey

8 September 2016
Talk: A decade of transition: the future trends in Geoscience
Speaker: Craig O'Neill, Macquarie University

14 July 2016
Talk: Reaching new audiences — the evolving role of geological surveys
Speaker: Simone Meakin, Geological Survey of New South Wales, NSW Department of Industry, Maitland

9 June 2016
Talk: Sydney Metro and Southwest — exposing more geological unknowns
Speaker: David Och, WSP Parsons Brinkerhoff

Annual GSA-NSW Division Honours Night
The NSW division of the Geological Society of Australia holds an annual Honours Night, where the best earth science honours students from around NSW universities present their research to the society.

2015
Wanchese M. Saktura (University of Wollongong)
Jessica M.J Walsh (University of Wollongong)
Uvana Meek (Macquarie University)
James Sippo (Southern Cross University) - best presentation of the night
David Beckett (University of Newcastle)
Luke Hardiman (University of Sydney)
Carmen Braz (University of Sydney)
Ingrid Flemons (University of New South Wales)

2014
Erin Martin (University of Newcastle)
Kieran Jay Lowe (University of Wollongong)
Rhiannon Garrett (University of Sydney)
Erica Barlow (University of New South Wales) - best presentation of the night

2012
Emma Flannery (Macquarie University) - best presentation of the night
Lydia Belford (University of Newcastle)
Ryan Manton (University of Wollongong)
Timothy Chapman (University of Sydney)
Amanda Hanani (University of New South Wales)

2011
Rathini Mahendian (University of Technology, Sydney)
Jessica Cope (University of New South Wales)
Andrew Merdith (University of Sydney)
Paul Connolly (University of Wollongong)
Patrick Carr (Macquarie University)

2010
Emily Bathgate (University of Technology, Sydney)
Brigette Martel and Jak McCarroll (University of New South Wales)
Sabin Zahirovic (University of Sydney)
Chris Firth (Macquarie University)

Committee

Chair: Kelsie Dadd
E: kelsiedadd@gmail.com

Secretary: Carmen Braz
E: carmen.braz@sydney.edu.au

Treasurer: Anthony Lanati
E: anthony.lanati@students.mq.edu.au

Newletter Editor
Mira van der Ley, UNSW
E: m.vanderley@unsw.edu.au

Paul Harvey, Macquarie University
Joanna Parr, CSIRO
Kenny Lo, UNSW Undergraduate
Angela Lay, UNSW postgraduate
Graham Carr, formerly of CSIRO