PETROS - Worldwide Databank of Major Element Chemical Analyses of Igneous Rocks
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 Sources include published works, theses, and in a few cases, unpublished analytical data, all of which are referenced in the bibliography.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.
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].
Dataset Identifiers
- doi:10.7289/V5QN64NM
- NCEI Metadata ID: gov.noaa.ngdc.mgg.geology:G00030
ISO 19115-2 Metadata
gov.noaa.ngdc.mgg.geology:G00030
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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
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Spatial Coverage Map |
General Documentation |
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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 |
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Global Change Master Directory (GCMD) Data Center Keywords
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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]. |
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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 |
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Last Modified: 2020-04-21
For questions about the information on this page, please email: ncei.info@noaa.gov
For questions about the information on this page, please email: ncei.info@noaa.gov