DI016
The Geodynamics of Cratons

Session ID#: 74916

Session Description:
Being the oldest lithosphere, cratons have experienced the consequences of complex geodynamic processes that have operated since the Archean.  These thick, cold and old lithosphere provide us with a way to study the Archean earth. Moreover, their unique lithospheric properties often influence present-day lithosphere-mantle interactions. The reason behind cratons’ long-term survival is one of the most outstanding questions in Earth Sciences and was first addressed in the mid-70s. However,  a definitive explanation is still elusive. The other issues associated with the cratons, such as their origin, density and viscosity structure, thickness, chemical heterogeneity and destructive mechanisms can be probed using numerical modeling, field data, geochemical studies and seismic imaging. Recently, the discovery of mid-lithospheric discontinuity  has added more complexity to the craton problem. In this session, we welcome contributions that intend to investigate the geophysical and geochemical problems related to cratons, both at the global and regional scales.
Index Terms:

8103 Continental cratons [TECTONOPHYSICS]
8120 Dynamics of lithosphere and mantle: general [TECTONOPHYSICS]
8124 Earth's interior: composition and state [TECTONOPHYSICS]


Primary Convener:  Jyotirmoy Paul, Indian Institute of Science, Centre for Earth Sciences, Bangalore, India
Conveners:  Attreyee Ghosh, Indian Institute of Science, Centre for Earth Sciences, Bangalore, India and Catherine M Cooper, WSU, Pullman, WA, United States
Primary Liaison:  Jyotirmoy Paul, Indian Institute of Science, Centre for Earth Sciences, Bangalore, India
 
Living on the edge: The geodynamic evolution of craton margins (Invited) (490462)
Claire A Currie, University of Alberta, Department of Physics, Edmonton, AB, Canada and Jolante van Wijk, New Mexico Institute of Mining and Technology, Earth and Environmental Science, Socorro, NM, United States
 
Lithosphere differentiation controls Archean tectonics and craton formation (501250)
Fabio A Capitanio1, Oliver Nebel1, Peter A. Cawood1, Roberto Ferrez Weinberg2 and Priyadarshi Chowdhury1, (1)Monash University, School of Earth, Atmosphere and Environment, Melbourne, VIC, Australia, (2)Monash University, Melbourne, VIC, Australia
 
They Don’t Make 'Em Like That Anymore (Invited) (505921)
Jeroen Van Hunen1, Hongliang Wang2, Charitra Jain1, D. Graham Pearson3, Philip Heron4 and Jacob Barrett4, (1)University of Durham, Department of Earth Sciences, Durham, United Kingdom, (2)Institute of Energy Technology, Department of Environmental Analyses, Oslo, Norway, (3)University of Alberta, Earth & Atmospheric Sciences, Edmonton, AB, Canada, (4)University of Durham, Durham, United Kingdom
 
Evolution of cratons in time-dependent mantle convection models (534800)
Jyotirmoy Paul and Attreyee Ghosh, Indian Institute of Science, Centre for Earth Sciences, Bangalore, India
 
Continental lithospheric mantle lateral flow during tectonic quiescence (540234)
Claudio Alejandro Salazar Mora, University of Sao Paulo, Sao Paulo, Brazil and Victor Sacek, University of São Paulo, São Paulo, SP, Brazil
 
The formation, and evolution of Archean cratons (569337)
Prasanna Mahesh Gunawardana, Monash University, Melbourne, VIC, Australia, Gabriele Morra, University of Louisiana at Lafayette, Department of Physics and School of Geosciences, Lafayette, LA, United States and Peter A. Cawood, Monash University, School of Earth, Atmosphere and Environment, Melbourne, VIC, Australia
 
The effects of plume on the generation of the first Archean terrains: insights from 3D numerical modelling. (580899)
Andrea Piccolo1, Boris J P Kaus2, Richard William White3, Richard Mark Palin4 and Georg S Reuber1, (1)Johannes Gutenberg University of Mainz, Mainz, Germany, (2)University Mainz, Mainz, Germany, (3)University of St Andrews, St Andrews, United Kingdom, (4)Zurich, Switzerland