Late Jurassic through Middle Cretaceous magmatism in the Blue Mountains Province occurred in distinct pulses, which correspond to periods of subduction, arc-arc collision, crustal thickening, and deep crustal anatexis (Schwartz et al., 2011, 2014; Johnson et al., 2015). The Blue Mountains Province comprises island arcs (Wallowa and Olds Ferry terranes) and the intervening accretionary wedge/fore-arc assemblage (Baker terrane) that were amalgamated in the Late Jurassic and then accreted to the Laurentian margin in the Early Cretaceous. My research group is currently involved in several projects, including:
These studies involve the applications of major and trace element geochemistry, mineral chemistry, isotope geochemistry, and geochronology. My research also benefits greatly from recent collaborations with Jiri Zak (Charles University, Prague), Krystof Verner (Czech Geological Survey and Charles University), and Josh Schwartz (Cal State Northridge). Funding for this research has been provided in part by NSF grant EAR-0911735 and UHD's Organized Research and Creative Activities (ORCA) grants.
- the petrology and petrogenesis of the Early Cretaceous Wallowa batholith,
- migmatites and melt formation in the suture zone, and
- the origin and tectonic significance of tonalitic and trondhjemitic magmatism.
These studies involve the applications of major and trace element geochemistry, mineral chemistry, isotope geochemistry, and geochronology. My research also benefits greatly from recent collaborations with Jiri Zak (Charles University, Prague), Krystof Verner (Czech Geological Survey and Charles University), and Josh Schwartz (Cal State Northridge). Funding for this research has been provided in part by NSF grant EAR-0911735 and UHD's Organized Research and Creative Activities (ORCA) grants.