Ocean drilling: Realizing the foundation of ocean lithosphere and the mantle

Barbara John

University of Wyoming 

Register for the Zoom meeting

Atlantis Massif, Mid-Atlantic Ridge

The upper mantle is critical for understanding terrestrial magmatism, crust formation, and element cycling between Earth’s solid interior, hydrosphere, atmosphere, and biosphere. Yet, the composition and evolution of the mantle are inferred by surface sampling and geophysical methods. International Ocean Discovery Program Expedition 399 to 30°N on the mid-Atlantic Ridge recovered a 1268-meter section of serpentinized mantle peridotite cut by thin gabbroic intrusions. The core provides details of the deepest in situ mantle collected, and hosts extensive hydrothermal fluid-rock interaction consistent with vent fluid composition in the nearby Lost City hydrothermal vent field.

Please join us at:

Worthy Brewing (eastside location)

In the Hop Mahal Room

5:30 pm social hour

7:00 pm presentation

COGS talk are free and open to the public -- all are welcome! Please join us for the social hour before the presentation.

All presentations are also live-streamed through Zoom. There will be a registration link at the top of this page as we get closer to the date of this presentation.