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    • PETROS - Worldwide Databank of Major Element Chemical Analyses of Igneous Rocks

    Metadata Updated: October 18, 2024

    PETROS is a worldwide data bank of major element chemical analyses of igneous rocks compiled for research and teaching purposes by Dr. Felix Mutschler and Staff at Eastern Washington University. PETROS version 6.1 includes 37,300 major element chemical analyses divided into 307 major groups representing geographic areas or petrologic provinces. The data are for 4,512 cores, grabs and dredges. Also included are 468 average igneous rock compositions calculated by various authors, a bibliography of information sources, and complete format/operating instructions for PETROS. In compiling PETROS, as few analyses as possible were rejected, allowing data bank users to exercise their own judgment on data values. Sources include published works, theses, and in a few cases, unpublished analytical data, all of which are referenced in the bibliography. Generally, only those analyses which included determinations of at least eight major oxides were accepted. Some quality control was exercised, and duplicate analyses, where possible were eliminated. Latitude/longitude information for samples is to the nearest one degree. An accompanying program listing in FORTRAN for searching PETROS is included with the data file, along with complete format documentation.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Date April 21, 2020
    Metadata Created Date October 18, 2024
    Metadata Updated Date October 18, 2024
    Reference Date(s) January 1, 1977 (publication), May 15, 1981 (revision)
    Frequency Of Update notPlanned

    Metadata Source

    Harvested from NGDC MGG Geology

    Other Data Resources

    Graphic Preview

    sample locations in study area

    Additional Metadata

    Resource Type Dataset
    Metadata Date April 21, 2020
    Metadata Created Date October 18, 2024
    Metadata Updated Date October 18, 2024
    Reference Date(s) January 1, 1977 (publication), May 15, 1981 (revision)
    Responsible Party NOAA National Centers for Environmental Information (Point of Contact)
    Contact Email
    Guid gov.noaa.ngdc.mgg.geology:G00030
    Access Constraints 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., 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., Cite as: Mutschler, F.E.; Rougon, D.J.; Lavin, O.P. and R.D. Hughes. 1977: PETROS - Worldwide Databank of Major Element Chemical Analyses of Igneous Rocks. version 6.1. NOAA National Centers for Environmental Information. https://doi.org/10.7289/V5QN64NM. Accessed [date]., Access to this dataset is unrestricted., Use of this dataset is unrestricted., 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.
    Bbox East Long 180
    Bbox North Lat 76
    Bbox South Lat -69
    Bbox West Long -180
    Coupled Resource
    Frequency Of Update notPlanned
    Graphic Preview Description sample locations in study area
    Graphic Preview File https://www.ngdc.noaa.gov/mgg/image/geolin/preview42995006.gif
    Graphic Preview Type GIF
    Harvest Object Id c8e981fc-041c-46bc-a0bb-ef19842ae55c
    Harvest Source Id 2738981c-0c63-4286-9da7-20abe8cd4700
    Harvest Source Title NGDC MGG Geology
    Licence Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United States.
    Lineage Multiple versions of PETROS were archived, version 6.1 was the final, authoritative version from the author. Receive on nine track magnetic tape in EBCDIC as one file, 80 character records blocked to 4000 characers, A total of 127,700 records, 37,300 analyses (4,512 ocean samples) replacing PETROS version 4.1.
    Metadata Language
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-180.0, -69.0], [180.0, -69.0], [180.0, 76.0], [-180.0, 76.0], [-180.0, -69.0]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System urn:ogc:def:crs:EPSG:4326
    Spatial Harvester True
    Temporal Extent Begin 1977-01-01
    Temporal Extent End 1981-04-30

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