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

Metadata Updated: November 12, 2020

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 Sources include published works, theses, and in a few cases, unpublished analytical data, all of which are referenced in the bibliography.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 November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) January 1, 1977 (publication), May 15, 1981 (revision)
Frequency Of Update notPlanned

Metadata Source

Harvested from NGDC MGG Geology

Graphic Preview

sample locations in study area

Additional Metadata

Resource Type Dataset
Metadata Date April 21, 2020
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
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 df35e9f8-b22d-46a7-b493-530c6f5f1ea6
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.
Metadata Language
Metadata Type geospatial
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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