The peridotite section of supra-subduction zone ophiolites is often crosscut by pyroxenite veins, reflecting the variety of melts that percolate through the mantle wedge, react, and eventually crystallize in the shallow lithospheric mantle. Understanding the nature of parental melts and the timing of formation of these pyroxenites provides unique constraints on melt infiltration processes that […]

The mechanisms of transfer of crustal material from the subducting slab to the overlying mantle wedge are still debated. Mélange rocks, formed by mixing of sediments, oceanic crust, and ultramafics along the slab-mantle interface, are predicted to ascend as diapirs from the slab-top and transfer their compositional signatures to the source region of arc magmas. […]

A great outreach event with geobiologist collaborator Joan Bernhard. This spring, we introduced students at the Perkins School for the Blind to foraminifera, or forams: small, single-celled organisms that abound in ocean waters and seafloor sediments. Joan collected a variety of forams which were scanned using x-ray micro-computed tomography in the Mantle Rocks lab. The computer models were then […]

Alicia ‘Cici’ Cruz-Uribe (WHOI postdoc 2014-2015) has just published her work on melange melting in Geology.

The SCARF 2017 student-led cruise is back on shore! After a few days in the Azores we sailed across the mid-Atlantic ridge aboard the R/V Neil Armstrong and acquired bathymetry, gravity and magnetics data along a flow line. It was an amazing adventure! SCARF 2017: A modern-day transatlantic crossing

Emily just started a Doherty Postodoctoral scholar at WHOI and is working on (U-Th)/He thermochronology and trace element geochemistry to 1) date magnetite that form during fluid alteration, 2) investigate the geochemical fingerprints of serpentinization at different tectonic settings, and 3) constrain the thermal history of mantle peridotites. Emily has extensive experience with anything outdoorsy […]