Skip to main content
Dataset Overview | National Centers for Environmental Information (NCEI)

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

browse graphicsample locations in study area
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 Sources include published works, theses, and in a few cases, unpublished analytical data, all of which are referenced in the bibliography.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.
  • 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].
gov.noaa.ngdc.mgg.geology:G00030
Download Data
Distribution Formats
  • ASCII (Version: UTF-8)
    • File Specification: American Standard Code for Information Interchange (ASCII) text format.
  • tar.gz (Version: unknown)
    • File Specification: compressed Tape ARchive file
Ordering Instructions Contact NCEI for other distribution options and instructions.
Distributor NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Dataset Point of Contact Marine Geology Data Manager
NOAA National Centers for Environmental Information
geology.info@noaa.gov
Coverage Description The dataset is nearly global in extent, excluding only the area south of 70 degrees south latitude. Vertically, it includes data both above and below sea level measured in meters. Active compilation of the dataset ceased prior to 1980.
Time Period 1977-01-01 to 1981-04-30
Spatial Reference System urn:ogc:def:crs:EPSG:4326
Spatial Bounding Box Coordinates
West: -180
East: 180
South: -69
North: 76
Spatial Coverage Map
General Documentation
  • Metadata Landing Page
    How to cite this data set (doi:10.7289/V5QN64NM), all access options, and complete documentation.
Associated Resources
  • PETROS version 6.1 Worldwide Databank of Major Element Chemical Analyses of Igneous Rocks
  • PETROS, igneous rocks for research and teaching.
  • KEYBAM--a system of interactive computer programs for use with the PETROS data bank of major element analyses of igneous rocks.
  • NCEI Marine Geology Data Archive
    • Parent Archive
      Information about the Marine Geology Data Archive at NCEI.
  • NOAA/NCEI Marine Geology WAF
Publication Dates
  • publication: 1977-01-01
  • revision: 1981-05-15
Edition version 6.1
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility
Data Update Frequency Not planned - No additional versions or updates are planned by the authors.
Supplemental Information
A FORTRAN program "KEYBAM" accompanies the data
Purpose Research and Instruction
Use Limitations
  • Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United States.
Dataset Citation
  • 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].
Cited Authors
  • Mutschler, F.E.
    Eastern Washington University
  • Rougon, D.J.
    Eastern Washington University
  • Lavin, O.P
    Eastern Washington University
  • R.D. Hughes
    Eastern Washington University
Publishers
  • NOAA National Centers for Environmental Information
Acknowledgments
  • Cite as: Mutschler, F.E., Rougon, D.J., Lavin, O.P., and R.D. Hughes (1981): PETROS version 6.1 Worldwide Databank of Major Element Chemical Analyses of Igneous Rocks. NOAA National Centers for Environmental Information. doi:10.7289/V5QN64NM
Theme keywords Library of Congress Subject Headings
  • Scientific archives
  • Electronic records
  • Geology
  • Submarine geology
SeaDataNet Common Vocabularies
  • Marine geology
Global Change Master Directory (GCMD) Science Keywords
  • Earth Science > Solid Earth > Geochemistry
  • Earth Science > Solid Earth > Geochemistry > Major Elements
  • Earth Science > Solid Earth > Rocks/Minerals/Crystals > Igneous Rocks
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
  • 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
Platform keywords NASA/GCMD Platform Keywords
  • In Situ Ocean-based Platforms > Ships
  • In Situ Ground-based Platforms > Field Surveys
Instrument keywords NASA/GCMD Instrument Keywords
  • In Situ/Laboratory Instruments > Samplers > Dredging Devices
  • In Situ/Laboratory Instruments > Samplers > Grabbers/Traps/Collectors > Grab Samplers
  • In Situ/Laboratory Instruments > Corers > ROCK CORERS
Place keywords NASA/GCMD Location Keywords
  • GEOGRAPHIC REGION > GLOBAL
Project keywords Uncontrolled vocabulary
  • PETROS
Global Change Master Directory (GCMD) Project Keywords
  • ICSU-WDS > International Council for Science - World Data System
Use Constraints
  • 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.
  • Use of this dataset is unrestricted.
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.
  • Access to 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.
Other Constraints 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].
Fees
  • 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.
Lineage information for: dataset
Lineage Statement 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.
Processing Environment Native Dataset Environment: ASCII text
Source Datasets
Lineage information for: repository
Processing Steps
  • 2015-04-22T00:00:00 - 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.
Acquisition Information (collection)
Instrument
  • In Situ/Laboratory Instruments
Platform
  • In Situ Ocean-based Platforms > SHIPS
Last Modified: 2020-04-21
For questions about the information on this page, please email: ncei.info@noaa.gov