Field Sites

The DAGGER group works in understudied areas around the world to better understand Late Devonian ocean anoxia events.  In particular, we work in northwestern China and western Mongolia in the Central Asian Orogenic Belt (CAOB) to get a better sense of oceanic environments outside of the range of the rising Appalachian mountain chain.

Figure modified from Blakey (

The vast majority of studies of Late Devonian extinction and anoxia events (black dots) are located within the Euramerican continent.  There are more studies of this region than every other region combined.  

Our goal is to work in sites that are not associated with major continental blocks or major collisional mountain belts to avoid any tectonic megabiases and better understand open oceanic conditions during this time.