World Data Service for Geophysics
Stewardship and services for geosample data from Earth's ocean floor and lakebeds
About The Data
Over nine terabytes of analyses, descriptions, and images of sediment and rock contributed by sources around the world are in the long-term archive at NCEI. Examples of data types available include physical properties, petrology/mineralogy, geochemistry, paleontology, paleomagnetism, x-rays, and photographs.
Data from cores and dredges collected during U.S. Extended Continental Shelf (ECS) Project cruises,
seabed descriptions from NOAA National Ocean Service hydrographic surveys, data from international scientific ocean drilling (DSDP,
IODP), and from many other past and present projects and programs related to NOAA's mission are available (see links at left).
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.
How to Contribute Data
Please contribute paleocean or paleolimnology geosample data to
NCEI Paleoclimatology. Sediment data from habitat or other environmental research may be contributed via
Send2NCEI (S2N). If you are a Partner Institution or have questions about contributing other types of marine geology data, please contact
More 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.
Access Marine Geology Data stewarded by NCEI via External Websites
Marine geology data from the archive are also offered in other forms on other sites. Examples include
GeoMapApp, and the United Nations
UNEP Shelf Programme interactive map.
Other NOAA Sources of Data from Sea floor and Lakebed Samples:
Related External Data: