Structure of the Oceanic Lithosphere of the Arctic Ocean

Project Description
The ARCTIC'91 study concentrated on studying the structure of the
oceanic crust of the Arctic Ocean.During the ARCTIC '91 expedition
aboard RV Polarstern (ARK VIII/3) to the Central Arctic Ocean, a box
corer sample on the Gakkel Ridge at 87?N and 60?E yielded a layer of
sand-sized, dark brown volcanic glass shards at the surface of the
sediment core.

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