Unit Affiliation: Geochemistry, Lamont-Doherty Earth Observatory (LDEO)
The projects aims to test the proposed strong compositional link between Izu Bonin arc magmas and altered oceanic crust subducted at the Izu Bonin Trench. We obtained samples of the basaltic crust from a ~900 km transect along the Izu Bonin trench by dredging active, vertical fault scarps along the Pacific Plate, and analysed friom major and trace elements and Sr-Nd-Pb-Hf radiogenic isotope ratios.
OUTCOMES: Our results confirmd, however, the compositional disparity between the altered coeanic crust at then trench and Izu Bonin arc volcanic rocks.. We are moving on to additional tests in the northwest Pacific oceanic basin that shall constrain the causes of the compositional disparity that is unique in the global spectrum of arcs.
Collaborative Research: Advanced Models of Magma Migration at Convergent MARGINS
Collaborative Research: Faulting Processes During Early-Stage Rifting: Analysis of an Unusual Earthquake Sequence in Northern Malawi
Collaborative Research: Plutons as Ingredients for Continental Crust: Pilot Study of the Differences between intermediate plutons and lavas in the intra-oceanic Aleutian arc