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World Data Service for Geophysics

Marine Geology

Sea Floor and Lakebed Geosample Data

Analyses, descriptions and images of sediment and rock samples


About The Data

Marine geophysical surveys gather data about the shape and subsurface geology of the sea floor. Analysis of geological samples (geosamples) collected during these surveys yields additional environmental and paleo-environmental data, and provides "ground truth" for interpretation of geophysical measurements. Geophysical and geosample data combine to provide the information needed to understand Earth's seabed environment and subsurface processes. Learn more...

How to View/Download Data

Most geosample data associated with a specific cruise or sample are discoverable and downloadable using the Index to Marine and Lacustrine Geological Samples (IMLGS), which also provides access to sample material curated by partner institutions. Multi-platform compilations or data reports are accessible using the Marine Geology Inventory.

ArcGIS maps, text searches, and web services are available for the IMLGS, the Marine Geology Inventory, and for some individual digital data sets. Searches offer free, immediate download of digital data, many images, and .PDF reports, and information on how to obtain full-resolution images from the archive, and order CD-ROMs, microfilm, or oversize charts.

How to Cite

Always cite the original source when using these data; use the DOI/citation where provided.

More About the Data

Over eight terabytes of analyses, descriptions, and images of sediment and rock from the sea floor and lakebeds contributed by sources around the world are in the long-term archive. Examples of data available include sediment/rock composition, physical properties, petrology/mineralogy, geochemistry, paleontology, paleomagnetism, x-rays, and photographs of samples and the sea floor.

Data from geosamples collected by the U.S. Extended Continental Shelf (ECS) Project, seabed descriptions from NOAA National Ocean Service hydrographic surveys, data from international scientific ocean drilling (DSDP, ODP, and IODP), and many other past and present projects and programs related to NOAA's mission are available (see links at left).

How to Contribute Data

Paleocean or paleolimnology geosample data may be contributed to NOAA Paleoclimatology. Sediment data from other environmental or habitat research may be contributed to the NOAA National Oceanographic Data Center. If you are an NGDC partner institution wishing to contribute data related to your sample repository holdings, more information is available on the Index to Marine and Lacustrine Geological Samples (IMLGS) page. For more information, or questions about contributing other marine geology data, please contact .

Access Marine Geology Data Archived by NGDC via External Websites

Marine geology data from the NGDC archive are also offered in other forms on other sites. Examples include goSeabed/dbSeabed/usSEABED, the National Science Foundation (NSF)-sponsored GeoMapApp, and the United Nations UNEP Shelf Programme interactive map.

Other NOAA Sources of Data from Sea floor and Lakebed Samples:

Related External Data: