2017 Expedition

Expedition in 60 Seconds: Pescadero Basin | Nautilus Live

Pescadero Basin

Oct 30, 2017 to Nov 5, 2017

In 2015, the deepest high-temperature hydrothermal vents in the Pacific Ocean were discovered in the Pescadero Basin of the Gulf of California. Initial observations revealed enigmatic aspects of this vent system, including unique mineralogical composition and fluid geochemistry, suggesting that there is much to be learned about deep ocean carbon dynamics in this system.

High-temperature hydrothermal vents at mid-ocean ridges typically produce chimneys dominated by sulfide minerals. In contrast, the Pescadero Basin vents host delicate structures composed of light colored carbonate minerals. The Pescadero Basin vents also host deep-sea biological communities thriving among carbonate chimney structures, including communities dominated by tubeworms. The striking differences between these vents and other regional hydrothermal systems offer a unique opportunity to explore the influence of tectonic setting on the nature of seafloor vent sites, the fundamental geochemical controls on biological colonization in the deep ocean, and the role of fluid venting on global-scale ocean chemistry and climate.

The main objective of this expedition will be to conduct an integrated biogeochemical exploration of the Pescadero Basin Vents. Nautilus will measure and collect vent fluid, rocks, sediment and biological samples to work to answer key questions about geologic processes, biogeochemistry, and biogeography, in the unique geological context of Pescadero Basin.

 

Meet the Team

Photo of Anshika Bagla
Ocean Science Intern
Photo of Stace Beaulieu
Science/Data Team
Photo of Dwight Coleman
Expedition Leader
Photo of Mark DeRoche
Deck Chief
Photo of Gregg Diffendale
Hercules Pilot
Photo of Elizabeth Fahy
Science Communication Fellow
Photo of Summer Farrell
Argus Pilot
Photo of Aubrey Foulk
Science/Data Team
Photo of Alfonso Garcia Arriola
Science Communication Fellow
Photo of Adriana Gaytán-Caballero
Science/Data Team
Photo of Michael Hannaford
Hercules Pilot
Photo of Scott Hara
Navigator
Photo of Renato Kane
Navigator
Photo of Mikayla Kelley
Video Engineering Intern
Photo of Justin Lowe
Data Engineer
Photo of Leigh Marsh
Science/Data Team
Photo of Jill McDermott
Science/Data Team
Photo of Ed McNichol
Video Engineer
Photo of Anna Michel
Science/Data Team
Photo of Susan Mills
Science/Data Team
Photo of Erin Ranney
Video Engineer
Photo of Yushet  Rivera-Aldaco
Science/Data Team
Photo of Josef Rogoschewsky
ROV Engineering Intern
Photo of Jennifer Runyan
Science Communication Fellow
Photo of Miles Saunders
Navigator
Photo of Trevor Shepherd
Hercules Pilot
Photo of Adam Soule
Science/Data Team
Photo of Daan Speth
Science/Data Team
Photo of Scott Wankel
Science/Data Team
Photo of Jonathan Zand
Hercules Pilot
Photo of Robert Zierenberg
Science/Data Team

Highlights

Video: Expedition in 60 Seconds: Pescadero Basin
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Expedition in 60 Seconds: Pescadero Basin
October 28, 2017
Video: Pescadero Basin: Matterhorn Vent Tube Worms
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Pescadero Basin: Matterhorn Vent Tube Worms
November 3, 2017