TY - JOUR
T1 - Tectonothermal evolution of solid bodies
T2 - Terrestrial planets, exoplanets and moons
AU - O'Neill, C. J.
PY - 2012/3
Y1 - 2012/3
N2 - A framework for understanding the tectonothermal evolution of solid planetary bodies has historically been lacking owing to sparse observational constraints. Developments in simulating the physical interiors and tectonic behaviour of terrestrial planets have allowed insights into the relevant physics and important factors governing planetary behaviour. This contribution summarises the critical factors in determining a planet's tectonic regime, and the application of this framework to understanding terrestrial planet evolution. Advances in modelling have led to the identification of new, unmapped tectonic regimes, such as episodic convection, which has relevance to our understanding of the evolution of the early Earth, Venus and Saturn's moon Enceladus. Coupling of tectonic and atmospheric models for planetary evolution has contributed to our knowledge of Martian and Venusian degassing histories, and recent debate on the tectonic regime of exosolar planets informs outstanding questions on their habitability. Ultimately, a framework for terrestrial planet evolution will couple available cosmochemical, geochemical and astrophysical constraints into an emerging generation of simulation tools, facilitating the mapping of terrestrial planet behaviour over a wide parameter space.
AB - A framework for understanding the tectonothermal evolution of solid planetary bodies has historically been lacking owing to sparse observational constraints. Developments in simulating the physical interiors and tectonic behaviour of terrestrial planets have allowed insights into the relevant physics and important factors governing planetary behaviour. This contribution summarises the critical factors in determining a planet's tectonic regime, and the application of this framework to understanding terrestrial planet evolution. Advances in modelling have led to the identification of new, unmapped tectonic regimes, such as episodic convection, which has relevance to our understanding of the evolution of the early Earth, Venus and Saturn's moon Enceladus. Coupling of tectonic and atmospheric models for planetary evolution has contributed to our knowledge of Martian and Venusian degassing histories, and recent debate on the tectonic regime of exosolar planets informs outstanding questions on their habitability. Ultimately, a framework for terrestrial planet evolution will couple available cosmochemical, geochemical and astrophysical constraints into an emerging generation of simulation tools, facilitating the mapping of terrestrial planet behaviour over a wide parameter space.
UR - http://www.scopus.com/inward/record.url?scp=84859328826&partnerID=8YFLogxK
U2 - 10.1080/08120099.2012.644403
DO - 10.1080/08120099.2012.644403
M3 - Article
AN - SCOPUS:84859328826
VL - 59
SP - 189
EP - 198
JO - Australian Journal of Earth Sciences
JF - Australian Journal of Earth Sciences
SN - 0812-0099
IS - 2
ER -