Tectonics, surface processes and sedimentation from mountain belts to sedimentary basins (co-sponsored by GSA-SGT) (co-organized)
|Convener: Alex Whittaker | Co-Conveners: Sebastien Castelltort , Christian Heine , Judith Bott|
Geomorphic and sedimentary records have long been used to deduce rates and styles of deformation at all scales and in diverse tectonic settings. Drainage networks, river profiles, terraces flights, downstream fining trends, growth strata, sediment provenance, sequence stratigraphy and changing depositional environments have all provided first order constraints on the interactions between tectonics, erosion and deformation at the Earthâs surface. However, the increasing sophistication of landscape evolution and stratigraphic models, and the development of new methods to quantify the rates of surface processes, from eroding catchments to depositional basins, has revived interest in the couplings and feedbacks between surface processes, tectonics and climate. These advances now make it possible to renew our understanding of the interactions between surface processes and tectonic deformation within the framework of the whole integrated sedimentary system.
In this session we invite contributions that use geomorphic or sedimentary records to understand deformation, and we welcome studies that address the interactions between basin or upland tectonics and the sedimentary system from erosion to transport and deposition at a range of scales. In particular, we encourage coupled catchment-basin studies that take advantage of new numerical/physical modeling methods, geochemical tools for quantifying rates of surface processes (TCN, A-ZFT, OSL...) and high resolution digital topographic and subsurface data. We also encourage field or subsurface sedimentological and structural studies of landscape evolution, growth relationships, sedimentary patterns and provenance in deformed settings, and contributions which address the role of surface processes in modulating rates of deformation and tectonic style.