gov.noaa.ngdc.mgg.geology:G04150 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact 2020-04-21 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) point European Petroleum Survey Group (EPSG) Geodetic Parameter Registry 2008-11-12 publication European Petroleum Survey Group http://www.epsg-registry.org/ European Petroleum Survey Group Geodetic Parameter Dataset Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured dataset of Coordinate Reference Systems and Coordinate Transformations. search urn:ogc:def:crs:EPSG:4326 6.18.3 Age, spreading rates, and spreading asymmetry of the world's ocean crust 2008-12-31 publication 2008-12-31 revision 1 International DOI Foundation (IDF) doi:10.1029/2007GC001743 NOAA National Centers for Environmental Information NCEI Metadata ID: gov.noaa.ngdc.mgg.geology:G04150 Muller, R.D. School of Geosciences, University of Sydney, Australia author Sdrolias, M. EarthByte Group, School of Geosciences, University of Sydney, Australia author Gaina, C. Center for Geodynamics, Geological Survey of Norway, Trondheim, Norway author Roest, W.R. Departement Geosciences Marines, Plouzane, France author EarthByte Group, School of Geosciences, University of Sydney, Australia collaborator NOAA National Centers for Environmental Information publisher tableDigital Geochemistry, Geophysics, Geosystems Volume 9, Issue 4, April 2008 DOI:10.1029/2007GC001743 The authors present four companion digital models of the age, age uncertainty, spreading rates and spreading asymmetries of the world's ocean basins as geographic and Mercator grids with 2 minute resolution. The grids include data from all the major ocean basins as well as detailed reconstructions of back-arc basins. The age, spreading rate and asymmetry at each grid node is determined by linear interpolation between adjacent seafloor isochrons in the direction of spreading. Ages for ocean floor between the oldest identified magnetic anomalies and continental crust are interpolated by geological estimates of the ages of passive continental margin segments. The age uncertainties for grid cells coinciding with marine magnetic anomaly identifications, observed or rotated to their conjugate ridge flanks, are based on the difference between gridded age and observed age. The uncertainties are also a function of the distance of a given grid cell to the nearest age observation, and the proximity to fracture zones or other age discontinuities. Asymmetries in crustal accretion appear to be frequently related to asthenospheric flow from mantle plumes to spreading ridges, resulting in ridge jumps towards hotspots. The authors also use the new age grid to compute global residual basement depth grids from the difference between observed oceanic basement depth and predicted depth using two alternative age-depth relationships. The new set of grids helps to investigate prominent negative depth anomalies, which may be alternatively related to subducted slab material descending in the mantle or to asthenospheric flow. A combination of these digital grids and the associated relative and absolute plate motion model with seismic tomography and mantle convection model outputs represent a valuable set of tools to investigate geodynamic problems. Scientific Research Cite as: Muller, R. D., M. Sdrolias, C. Gaina, and W. R. Roest (2008), Age, spreading rates, and spreading asymmetry of the world's ocean crust, Geochem. Geophys. Geosyst., 9, Q04006, doi:10.1029/2007GC001743. ongoing historicalArchive NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA National Centers for Environmental Information Marine Geology Data Manager 325 Broadway, Mail Code E/NE42 Boulder CO 80305-3328 USA geology.info@noaa.gov pointOfContact unknown New versions may be archived in the future. https://www.ngdc.noaa.gov/mgg/ocean_age/data/2008/image/age_oceanic_lith.jpg crustal ages JPEG Scientific archives Electronic records Oceanography Ocean bottom Geology Submarine geology theme Library of Congress Subject Headings US Library of Congress http://id.loc.gov/authorities/subjects http web browser Library of Congress Subject Headings (LCSH) The Library of Congress Subject Headings (LCSH) are part of a Linked Data Service, actively maintained since 1898 to catalog materials held at the Library of Congress. information resourceProvider Marine geology theme SeaDataNet Common Vocabularies SeaDataNet http://www.seadatanet.org/Standards-Software/Common-Vocabularies http web browser SeaDataNet Common Vocabularies The SeaDataNet Vocabulary Server is populated with lists describing a wide range of entities relevant to marine metadata and data such as parameters, sea area names, platform classes, instrument types, and so on. information resourceProvider Earth Science > OCEANS > Marine Geophysics > Marine Magnetics Earth Science > SOLID EARTH > Rocks/Minerals/Crystals > Age Determinations Earth Science > SOLID EARTH > Geomagnetism > Paleomagnetism theme Global Change Master Directory (GCMD) Science Keywords 2024 revision 19 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian In Situ Ocean-based Platforms > Ships platform Global Change Master Directory (GCMD) Platform Keywords 2020-01-09 publication 9.1 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Unknown instrument Global Change Master Directory (GCMD) Instrument Keywords 2020-01-09 publication 9.1 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce dataCenter Global Change Master Directory (GCMD) Data Center Keywords 2020-01-09 publication 9.1 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian SOLID EARTH > CRUST Geographic Region > Global Ocean Vertical Location >Sea Floor place Global Change Master Directory (GCMD) Location Keywords 2024 revision 19 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian otherRestrictions Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose. otherRestrictions Access to this dataset is unrestricted. otherRestrictions Cite as: Muller, R.D.; Sdrolias, M.; Gaina, C.; Roest, W.R.; 2008: Age, spreading rates, and spreading asymmetry of the world's ocean crust. NOAA National Centers for Environmental Information. https://doi.org/10.1029/2007GC001743. Accessed [date]. Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United States. otherRestrictions While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. unclassified NOAA/NCEI Marine Geology WAF 2015-10-05 NOAA National Centers for Environmental Information author https://data.noaa.gov/waf/NOAA/NESDIS/NGDC/MGG/Geology/iso/ WWW:LINK-1.0-http--link Web Browser Marine geology metadata records. search crossReference collection grid eng; USA UTF8 geoscientificInformation oceans Native Dataset Environment: ASCII text Global sea floor -180.0 180.0 -90.0 90.0 Publication Date 2008-12-31 2008-12-31 -10000 0 Data from this report are available online from NCEI, and also online from EarthByte Group, University of Sydney. Version 3 (posted 9/25/2008) contains the following changes: 1) Spreading asymmetry for crust without a present day conjugate is included in this version of the grid due to several requests received by the authors.2) Adjustment to the location of chron M25 in the westernmost Pacific (Pacific-Izanagi) and to the age assigned to the Pacific triangle.3) Minor COB modifications around back-arc basins to minimise over-interpolation artifacts from the adjacent subducting ocean floor.4) A gridding artifact in the Bay of Bengal, eastern India and in the southern Indian Ocean, east of the Enderby Basin was fixed.5) Inclusion of the Komandorsky Basin and Bering Sea, North Pacific. digital model of age, age uncertainty, spreading rate, and spreading asymmetries grid gridded age Ages for ocean floor between the oldest identified magnetic anomalies and continental crust are interpolated by geological estimates of the ages of passive continental margin segments. gridded age uncertainty The age uncertainties for grid cells coinciding with marine magnetic anomaly identifications, observed or rotated to their conjugate ridge flanks, are based on the difference between gridded age and observed age. The uncertainties are also a function of the distance of a given grid cell to the nearest age observation, and the proximity to fracture zones or other age discontinuities. gridded spreading rate Rate of accretion of ocean crust. gridded spreading asymmetries Asymmetries in crustal accretion appear to be frequently related to asthenospheric flow from mantle plumes to spreading ridges, resulting in ridge jumps towards hotspots. false true Documentation 2008-12-31 creation Entities and attributes are completely described in a text file accompanying the dataset on download. NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information distributor In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. ASCII UTF-8 American Standard Code for Information Interchange (ASCII) text format. https://www.ngdc.noaa.gov/mgg/ocean_age/ocean_age_2008.html WWW:LINK-1.0-http--link Web Browser https://www.ngdc.noaa.gov/mgg/ocean_age/ocean_age_2008.html NGDC Web page of information about the data set with links to download data and documentation from NCEI. information http://www.earthbyte.org/Resources/agegrid2008.html WWW:LINK-1.0-http--link Web Browser http://www.earthbyte.org/Resources/agegrid2008.html Alternate download from the originator. download dataset gov.noaa.ngdc.mgg.geology:G04150 Horizontal Positional Accuracy The horizontal accuracy of data values is unknown. Reliability no quality control measures were performed by NCEI. Quality control was performed by the originator. lineage prior to transfer to NCEI is unknown. Received data from originator 2008-12-31T00:00:00 Dietmar Muller repository NOAA National Centers for Environmental Information NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015. 2015-04-22T00:00:00 asNeeded Modified for compliance to NCEI Template v1.2. In Situ/Laboratory Instruments instrument Instrument Type: Sea floor and lakebed geologic sampling (coring, drilling, dredging, trawling, and/or grab sampling devices) and/or in situ measurements (cameras, visual observations, and/or recorders/loggers) In Situ Ocean-based Platforms > SHIPS Various ocean-based and lake-based ships, boats, remotely operated vehicles, submersibles, and other unspecified types of platforms