*ICS Subcommission for Stratigraphic Information*University of South Carolina Sequence Stratigraphy Web*Front Range stratigraphy*International Commission on Stratigraphy*University of Georgia (USA) Stratigraphy Lab*Stratigraphy.net A stratigraphic data provider.
ISBN 978-0-13-600598-8==External links==*ICS Subcommission for Stratigraphic Information*University of South Carolina Sequence Stratigraphy Web*Front Range stratigraphy*International Commission on Stratigraphy*University of Georgia (USA) Stratigraphy Lab*Stratigraphy.net A stratigraphic data provider.