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Palaeoenvironments

The Palaeoenvironments Group specialise in environmental reconstruction on times scales that range from thousands to millions of years.

science Research area

About

The Palaeoenvironments Group is a collection of research scientists that specialise in environmental reconstruction on times scales that range from thousands to millions of years for both marine and terrestrial environments. These reconstructions extend the record of climate behaviour and variability beyond those observed in the modern, and provide insights on processes (e.g., the response of ice-sheets) that act on longer timescales.

We investigate cave precipitates, lake sediments, corals and reef sediments, marine sediments and ice cores to construct records of past environmental change. These records are invaluable for providing context for recent environmental change, as well as providing crucial data for ground-truthing climate models.

Currently projects include past changes in sea level, ocean temperature and carbonate chemistry, Antarctic climate, and Australian dust. We use a diverse range of proxies and have we have an array of (in house) cutting edge laboratories in which to make the measurements.

Facilities

State of the art micropaleontological laboratory and microfossil collection from The Australian region.

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The Black Mountain Palaeomagnetic laboratory is equipped with a 2G superconducting rock magnetometer, a Quantum Design MPMS for magnetic mineral identification, a Princeton Measurements Corporation Vibrating Sample Magnetometer, and a suite of other instruments for palaeo- and rock magnetic measurements.

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The Palaeoenvironment Stable Isotope Laboratory at RSES has a number of mass spectrometer facilities dedicated to particular types of analyses for δ13C and δ18O of carbonate samples, and δD, δ18O and δ17Oexcess of waters.

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The ANU Research School of Earth Sciences operates a cutting-edge X-ray Fluorescence (XRF) scanning facility, capable of non-destructive elemental analysis from magnesium to uranium on a variety of samples including sediment cores and rocks.

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Projects

Rates of soil formation in North Queensland are being studied on basalt lava flows which are dated by K/Ar. In the semi-arid Hughenden- Charters Towers region (500-600 mm/year rainfall), soils form at rates of ~0.3 mm/1000 years. On the Atherton Tableland, (rainfall 1200-3500 mm/year) rates are significantly faster...

Status

Current

This project addresses the pressing need to understand the growing disequilibrium between today’s fast climate changes and slow ice-volume adjustments, which is significant because this is a key determinant for potential acceleration of sea-level rise. This is a major concern to society, because climate change and...

Figure 1. The tropical waters around Indonesia are an important source region for Australia’s rainfall.
The warm tropical waters around Indonesia are an important source of rainfall for Australia. When the temperature of the water in this area is warmer than usual Australia receives more rain...

Status

Current

People

Paleogeographic reconstructions indicate that parts of the Australian continent have been exposed above sea level for hundreds of millions of years. Paleomagnetic dating of giant weathering profiles (up to 100 m deep) in open pit mines reveals three major periods of deep oxidation: Late Cenozoic (20 Ma to present...

Status

Current

Project summary
Water resource management is one of the greatest challenges facing sustainable agriculture and urban populations across southern Australia. Key players driving catastrophic droughts in southern Australia are the tropical Indian Ocean Dipole and polar Southern Annual Mode climate systems,...

Status

Completed

People

Members

Researcher

Professor Nerilie Abram

Professor of Climate Science
FAA (Fellow of the Australian Academy of Science)

Emeritus Professor

Honorary Associate Professor

Emeritus Professor

Emeritus Professor

Professor (visiting) of Marine Carbon Cycle

Collaborator

Research Fellow

Research support officer

Palaeomagnetism Laboratory Scientific Officer

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Research Assistant

Research Officer

Student

PhD Candidate

PhD Candidate

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PhD Candidate

PhD Candidate

Visitor and affiliate

Honorary Assoc. Prof. (The Australian National University)
Honorary Professor (University of Queensland)