[Aqualist] FW: UoAdelaide Earth Science Seminars 8th of September - Dr Agathe Lise-Pronovost

[John Tibby]

Dear AQUA colleagues,
Please see below for a no doubt fabulous seminar of interest.  The abstract is pasted at the bottom of the email since the AQUA list does not allow attachments.
Cheers,
John.



Dear colleagues,

It is our pleasure to announce that the University of Adelaide Earth Science Seminar Series<https://set.adelaide.edu.au/events/list/2023/03/earth-sciences-seminars-2023> this week will be presented by Dr Agathe Lise-Pronovost<https://findanexpert.unimelb.edu.au/profile/807221-agathe-lise-pronovost> from the University of Melbourne. Agathe is a DECRA Research Fellow from the University of Melbourne and will be giving a talk on How to use Earth's magnetic field as a dating tool for Australia's natural and cultural history. This seminar will occur on Friday 8th of September at 3PM ACST in the Mawson Lecture Theatre (The University of Adelaide) and on Zoom. Attached in the email are short abstracts on their upcoming talk as well as the schedule of presentations planned for the second half of Semester 2, 2023. Please use the details below to access the talk via Zoom.

Zoom link: https://adelaide.zoom.us/j/87147875323?pwd=TTBGUExUZ00vVXB0UVlqTHdVeWRTQT09
Passcode: 2023

We look forward to seeing you either in person, or online. If you have any queries, please feel free to contact myself or Adam.

Best wishes,
Darwin and Adam

darwinaji.subarkah at adelaide.edu.au<mailto:jessica.walsh at adelaide.edu.au>
adam.abersteiner at adelaide.edu.au<mailto:adam.abersteiner at adelaide.edu.au>


Dr Darwinaji Subarkah
Postdoctoral Researcher | Tectonics and Earth Systems Group | Department of Earth Sciences
Room 111 Mawson Building, The University of Adelaide, Adelaide SA 5005, Australia
T: +61 8 8313 5378
E: darwinaji.subarkah at adelaide.edu.au<mailto:darwinaji.subarkah at adelaide.edu.au>
CRICOS Provider Number 00123M
ORCID: 0000-0002-9028-4232
  [linkedin] <https://www.linkedin.com/in/darwinaji-subarkah-399610b6/> [Google_Scholar_logo] <https://scholar.google.com/citations?user=FMzTnF4AAAAJ&hl=en>
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The University of Adelaide acknowledges that the Kaurna peoples are the original inhabitants of the land where the first campus of the University is built. It values the presence of Aboriginal and Torres Strait Islander peoples from across Australia as part of its University community as indicated in its 2019 Reconciliation Action Plan. https://www.adelaide.edu.au/reconciliation/reconciliation-action-plan



How to use Earth's magnetic field as a dating tool for Australia's natural and cultural history: recent advances using lake sediments, stalagmites and lava flows

Agathe Lise-Pronovost

Abstract

Estimating the age of natural and cultural materials is critical to contextualise discoveries in Paleosciences and Archaeology. However, developing chronologies is challenging in Australia because archaeological materials are often degraded and exposed to weathering and therefore unsuitable for conventional dating methods. Carbon-based material for radiocarbon dating is not always present and minerals exposed to sunlight cannot be dated using optically stimulated luminescence. Regional paleomagnetic dating offers a solution. Materials such as cave stalagmites, lake sediments, and Aboriginal Australian hearths have the capacity to record the strength and direction of Earth's magnetic field at the time they form. We can measure that recorded information in well-dated materials such as stalagmites and lake sediments and for a template of the Earth's magnetic field history, which constitutes a reference for dating other materials, such as fired archaeological materials.
In this seminar, I will present recent advances in Australia paleomagnetism from stalagmites, lake sediments and lava flows, in the framework of my DECRA where I propose to develop "A new dating tool for Australia's cultural and natural history". The case studies include 1) stalagmites from Webbs Cave on the Nullarbor Plains (Southern Australia), a record that reaches decadal scale resolution over the last 4.2 ka and constitutes the first Holocene paleomagnetic record derived from a stalagmite in Australia, 2) sediment cores from Crater lakes Keilambete and Gnotuk (Victoria), which are well-known records first studied in the 1970s that reach centennial-scale resolution over the last 10 ka and remains to this day the only Australian sediment paleomagnetic record sometimes included in global databases and models, and 3) basalt lava flows from Budj Bim Cultural Landscape UNESCO world Heritage site (Victoria). In collaboration with the Gunditj Mirring Traditional Owners Aboriginal Corporation (GMTOC), we used paleomagnetism techniques across the 37-ka lava flow to investigate fire technologies at one of the oldest aquaculture sites in the world. We will unpack the idea that if fire technologies were used to engineer canals, we could then use regional paleomagnetic dating to estimate their age. We will draw on the preliminary results from these three case studies to highlight exciting applications for regional paleomagnetic dating in southeast Australia as well as improving the next generation of data-driven geomagnetic field models.
Bio
Agathe Lise-Pronovost is an expert in Earth's magnetic field research working in the disciplines of Geochronology, Paleoclimate, and Archaeological Sciences. She is currently an Australian Research Council DECRA Fellow in the School of Geography, Earth and Atmospheric Sciences and Chair of the Science Committee for the Australia and New Zealand Consortium for International Ocean Discovery Program. Her research unlocks data from the past in materials such as lake and marine sediments, cave deposits, archaeological artifacts and lava flows to understand geomagnetic field changes and how it impacts society.