Deep-sea geology rocks!
Mud collected from the deep seafloor is helping scientists from MBARI and the United States Geological Survey (USGS) understand the geologic history of the Cascadia Subduction Zone off the coast of Oregon. Sediment cores collected by ROV Doc Ricketts reveal layers formed over thousands of years. Here, the Juan de Fuca tectonic plate is thrust beneath North America, leading to a buildup of friction. The massive release of energy when friction gives way results in megathrust earthquakes and tsunamis. The team is also getting a closer look at the biology of this dynamic region. These cores help our scientists look back in time to see when these geologic events have happened in the past and the natural processes that shape the continental margin to help Pacific Coast communities plan for the future.