Index to Marine & Lacustrine Geological Samples (IMLGS)
Access to rock and sediment cores, dredges, and grabs
from the sea floor and lakebeds
What is the IMLGS?
The Index to Marine and Lacustrine Geological Samples is a tool to help scientists locate and obtain geologic material from sea floor and lakebed cores, grabs, and dredges archived by participating institutions around the world.
Sample material is available directly from each repository. Before proposing research on any sample, please contact the curator for sample condition and availability.
Data are prepared by the sample repositories whose collections are searchable through the IMLGS.
The Curators' Consortium guides the database, maintained on behalf of the group by NGDC, since 1977.
Some U.S. repositories receive funding from NSF to prepare data for the Index, and NGDC is the NSF-designated "appropriate National Data Center" for data and information about geologic samples collected with NSF funds. For more information, see the NSF Division of Ocean Sciences Data and Sample Policy.
How to Cite:
Curators of Marine and Lacustrine Geological Samples Consortium (2013). The Index to Marine and Lacustrine Geological Samples (IMLGS). National Geophysical Data Center, NOAA. doi:10.7289/V5H41PB8 [date of access].
More about the IMLGS
Data include basic collection and storage information. Lithology, texture, age, principal investigator, province, weathering, metamorphism, glass remarks, and descriptive data are included for some samples, at the discretion of the curator.
The Index provides links to view and download related data and images at participating institutions and NGDC and includes reciprocal links to the National Science Foundation (NSF) sponsored Rolling Deck to Repository (R2R). R2R also maintains a Linked Data version of the IMLGS in cooperation with NGDC.
Several thousand samples in the Index also link to the NSF supported System for Solid Earth SAmple Registration (SESAR) by IGSN, the Marine Geoscience Data System (MGDS) and PetDB.
The Index is endorsed by the Intergovernmental Oceanographic Commission, Committee on International Oceanographic Data and Information Exchange (IODE-XIV.2).
Look for data from the Index to Marine and Lacustrine Geological Samples, and for data digitized under the NOAA Climate Data Modernization Program (CDMP), in the NSF-funded GeoMapApp,
and in the United Nations UNEP Shelf Programme.