|Thermochronology: dating erosion, topographic evolution, and crustal thermal processes
Modern thermochronometry techniques such as apatite fission track analysis and (U-Th)/He analysis have developed in recent years and are now routinely applied to a wide variety of geological and geodynamic problems. In particular these methods are beginning to provide robust quantitative constraints on the chronology, rates and spatial patterns of continental erosion over geological time scales. Although the relationship between erosion and surface uplift is a complex one these methods are also being used widely to help constrain and estimate the chronology and amount of regional scale uplift. This has particular resonance within southern Africa where the debate about the evolution of the topography of the continental margins as well as the interior is controversial and current given the broad interest in the deep mantle low seismic velocity anomaly beneath Africa and its possible role in driving dynamic uplift of the continent. This session invites contributions from all areas of thermochronometry including technique development and novel application to all areas of Earth science, and we particularly invite contributions that will help advance our understanding about the evolution of Africa’s topography.
|Roderick Brown, Rebecca Flowers, Charles Kasanzu and Jaclyn Baughman