Research — Geochronology
NMGRL is involved with a variety of research projects addressing volcanic hazards, climate change, plutonism, and uplift and tectonism (among many others). We are also deeply involved with development of technology for 40Ar/39Ar geochronology and noble gas mass spectrometers.
Uplift of the Tibetan Plateau: Insights from cosmogenic exposure ages of young lava flows
The Tibetan plateau is a product of the most dramatic tectonic event of recent geological history: the collision of the Indian sub-continent with Eurasia. In spite of the topographic and tectonic implications of the plateau, the mechanisms for its uplift remain controversial. The controversy is in large part a result of poorly constrained uplift history. Types of evidence that have been adduced for the uplift history include paleoecological date, cooling histories of plutonic and igneous rocks, and geomorphic interpretations. Some lines of evidence indicate relatively gradual uplift since the mid-Tertiary, while others support rapid acceleration of uplift during the latest Cenozoic, with the greatest portion during the Quaternary.