The dynamic evolution of landscapes reflects the effects of temporal changes in climate as well as tectonics. Geomorphic features preserved in a landscape are some of the youngest markers that can be used to reconstruct the climate and tectonic history of a region. Today, with the advent of robust techniques for dating Quaternary features, we have tools that allow us to quantify the timing of formation or the modification of geomorphic features. With this geochronologic dataset, we can assess the nature of the processes acting on and modifying these geomorphic features.


The interactions of climate and tectonics, especially regarding the formation and degradation of orogens, is an active area of research and one which has far reaching implications for how we interpret the forces responsible for the dramatic topography of ranges such as the Himalaya, Andes, and Cordillera of Western North America. My work focuses on understanding the paleoclimatic and neotectonic history of Pleistocene landscape development in Peru.  I use cosmogenic 10Be and 26Al concentrations to establish the rates of surface processes, such as erosion rates, as well as the chronology of landscape development.

 

Active Tectonics in the forearc of Peru

Glacial Geochronology in the Central Andes