Ferromanganese nodules on a deep-ocean seamount

Release Date:

USGS Pacific Coastal and Marine Science Center researcher Kira Mizell talks about the discovery of a ferromanganese nodule field on a seamount deep in the North Atlantic Ocean.

During a recent dive on the New England Seamount chain off the North Atlantic coast, researchers aboard the NOAA Ocean Exploration Expedition, North Atlantic Stepping Stones, discovered a marine geological feature known as a ferromanganese (Fe-Mn) nodule field in the saddle between two peaks of Gosnold Seamount. These seamount-hosted nodules were an exciting find, since Fe-Mn crusts are more common in seamount settings.

Marine Fe-Mn minerals are unique among marine rocks in that they grow slowly over millions of years, building layers and accumulating metals as they precipitate from seawater and/or sediment pore waters. The study of Fe-Mn deposits can yield clues about past climatic conditions and geologic history, shedding light on how the world’s oceans have changed over time.

Watch the video!

 

Related Content

Filter Total Items: 1
Date published: July 30, 2021
Status: Active

Global Marine Mineral Resources

Researching mineral resources that occur within the U.S. Exclusive Economic Zone and areas beyond national jurisdictions.

Filter Total Items: 2
July 25, 2021

Ferromanganese Nodules—2021 North Atlantic Stepping Stones Expedition

During a recent dive on the New England Seamount chain off the North Atlantic coast, researchers aboard the NOAA Ocean Exploration Expedition, North Atlantic Stepping Stones, discovered a marine geological feature known as a ferromanganese (Fe-Mn) nodule field in the saddle between two peaks of Gosnold Seamount. These seamount-hosted nodules were an exciting find, since Fe

July 13, 2021

NOAA-USGS Stepping Stones 2021 Expedition

Join USGS researchers Jason Chaytor and Kira Mizell as they virtually participate in a NOAA Ocean Exploration expedition to the depths of the North Atlantic.

The 2021 North Atlantic Stepping Stones: New England and Corner Rise Seamounts expedition runs from June 30 to July 29. At-sea and shore-based science teams will study deep-water habitats in the high seas,