The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.
The site is secure.
The http:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.
Geological History of the Ocean's Crust Product Decommission
Please Note: NCEI will transition the Geological History of the World's Oceanic Crust page to EarthByte on May 12, 2025. The underlying data will remain available. Send comments and questions to ncei.info@noaa.gov.