We hold 4,000 dredge and grab samples, including a large collection of manganese nodules, many of which were recovered by submersibles. Our dredge collection spans the globe and we have samples from a variety of tectonic settings. Some of these samples have few or no known equivalents on land.

Below is a map of our entire dredge collection. Circled areas have sample suites of particular regional significance. You can download a list of samples for each region along with their associated metadata, links to their listings in the IMLGS, and other available data for each sample here, List of LDEO Dredges, photographs available upon request.

map of our dredge holdings