EarthRef Digital Archive (ERDA)

[Adapted from EarthRef home page, "http://earthref.org/databases/ERDA/main.htm"] The EarthRef Digital Archive (ERDA) contains any type of digital data object associated with the Earth Sciences. Data objects may be part of non-published Earth Sciences projects ranging from data tables to diagrams to reports to geological maps to videos. Users may make contributions to the database, which may then be viewed and downloaded by using any of the following search options: - Search by free-text keywords; - Search by location; - Search based on geological time scale name and age range in Ma; and - Advanced search which combines all above searches while adding options for project name and expert level. The EarthRef Digital Archive is available at the following URL: "http://earthref.org/databases/ERDA/main.htm"