T31B:
Secular Change in Earth Processes: Shifting Uniformitarianism I Posters

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Session ID#: 12441

Session Description:
An array of evidence continues to mount that many of the geologic processes observed today are very different than the processes that shaped the early Earth. The rock record throughout geologic history preserves petrological, structural, geochemical and isotope evidence for significant changes in Earth processes. From secular cooling in the mantle to the shifts in atmospheric chemistry, these changes extend from deep in the Earth’s interior to the edge of space. Understanding secular change in Earth processes is important as these processes affect the mechanisms of growth and reworking of the continental crust, contribute to global climate change and control the location and timing of the mineral endowments necessary to support human ambition in the future. We invite research contributions that use field-based, experimental, geophysical, petrological, geochemical, and/or modelling techniques to investigate secular change in geodynamic processes from the Hadean to the Holocene.
Primary Convener:  Christopher J Spencer, Curtin University, Dept of Applied Geology, Perth, WA, Australia
Conveners:  Christopher J Spencer, Curtin University, Dept of Applied Geology, Perth, WA, Australia, Kent C Condie, New Mexico Institute of Mining and Technology, Socorro, NM, United States and Craig O'Neill, Queensland University of Technology, Earth and Atmospheric Sciences, Brisbane, QLD, Australia
Chairs:  Christopher J Spencer, Curtin University, Dept of Applied Geology, Perth, WA, Australia and Craig O'Neill, Queensland University of Technology, Earth and Atmospheric Sciences, Brisbane, QLD, Australia
OSPA Liaison:  Christopher J Spencer, Curtin University, Dept of Applied Geology, Perth, WA, Australia
Index Terms:

1645 Solid Earth [GLOBAL CHANGE]
8110 Continental tectonics: general [TECTONOPHYSICS]
8157 Plate motions: past [TECTONOPHYSICS]
8178 Tectonics and magmatism [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Constraining the influence of a LIP on the Neoproterozoic break-up of Baltica and Laurentia (165834)
Hans Jørgen Kjøll1, Torgeir B Andersen1, Fernando Corfu1 and Christian Tegner2, (1)University of Oslo, Oslo, Norway, (2)Aarhus University, Centre of Earth System Petrology, Department of Geoscience, Aarhus, Denmark
A Comparison of Continental Extension Estimates Across the Margins of the Woodlark Basin, Papua New Guinea (118181)
Berg Nazlim and Andrew Mark Goodliffe, University of Alabama, Geological Sciences, Tuscaloosa, AL, United States
Transition in the Mode of Syn-Collisional Continental-Recycling with Secular Cooling of the Earth and its Implications for Crustal Evolution (130445)
Priyadarshi Chowdhury, Monash University, School of Earth, Atmosphere and Environment, Melbourne, VIC, Australia, Taras Gerya, ETH Zurich, Department of Earth and Planetary Sciences, Zurich, Switzerland and Sumit Chakraborty, Ruhr University Bochum, Institute GMG, Bochum, Germany
Viability of Archean Subduction Initiation from Gravitational Spreading (161962)
Andrea Adams, Bayerisches Geoinstitut, Universitaet Bayreuth, Bayreuth, Germany, Marcel Thielmann, ETH Zurich, Zurich, Switzerland and Gregor Golabek, Universität Bayreuth, Bayerisches Geoinstitut, Bayreuth, Germany
A Detailed Magmatic and Tectono-thermal Study of an Orogenic System in a Transitional Earth: The Eburnean Orogeny (171173)
Helen Barbara McFarlane1,2, Laurent Ailleres1, Jérôme Ganne2, Lenka Baratoux2, Peter Graham Betts1 and Mark Jessell3, (1)Monash University, School of Earth, Atmosphere and Environment, Melbourne, VIC, Australia, (2)IRD Institute for Research and Development, UR 234, GET, Université Toulouse III, Toulouse, France, (3)The University of Western Australia, Centre for Exploration Targeting (School of Earth Sciences), Crawley, WA, Australia

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