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Orogenic cycles: from field observations to global geodynamics

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Last updated:
6 October 2016
Associate Editors: Virginia Toy, Gianretto Manatschal, Gideon Rosenbaum, Meghan Miller, Rodolfo Carosi
Submission Open 10.6.2016

Submission Closed 3.31.2017

Orogens do not evolve in a continuum manner. Instead their evolution is characterized by episodes of intense contractional deformation intermitted by periods of tectonic quiescence. The mechanics, rates, and drivers of such switches in tectonic mode have attracted substantial research at all scales, ranging from microstructural investigation of distinct shear zones to lithospheric-scale geophysical examination. The underpinning processes are still debated, but can potentially be unravelled by co-operative consideration of emerging high-resolution structural, metamorphic, magmatic and geochronological data.

This special volume will address the topic of orogenic cycles based on observations made within the European Alps and Mediterranean, as well as other ancient and active orogenic systems, with an emphasis on (1) the geological evidence associated with orogenic cycles; (2) the geodynamic processes governing orogenic cycles; and (3) the implications of orogenic cycles to global tectonics. Potential contributions could address, for example, relationships between orogenic episodes and pre-existing rifted margins, links between orogenic cycles and plate reorganization events, and episodic behaviour of magmatic arcs.

AGU Commentaries

Last updated:
1 August 2016
This Special Collection brings together commentaries published across all of AGU's journals. These discuss significant research, current research trends, science policy, and other topics of general interest, and are invited by the editors of each journal. Each commentary is freely available.

An appraisal of Global Continental Crust: Structure and Evolution

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Last updated:
20 July 2016
Associate Editors: Yu Jeffrey Gu, Claire Currie, Ved Lekic, Gabi Laske

Submission deadline: January 15, 2017

The availability of broadband geophysical arrays, such as recent deployments of dense networks across North America and Asia, has substantially increased our ability to characterize crustal properties beneath major continents.  The improved data constraints, coupled with numerical simulations, enable an in-depth analysis of the structure, composition, spatial variability and evolution of the continental crust. This special issue combines new observations and synthesis of continental crust with comprehensive reviews of the evidence from a wide range of disciplines including seismology, geodynamics, gravity, magnetics and geochemistry.  In addition to a global component, this special issue offers new perspectives on the major continents such as North America, South America and Asia.