PetDB, the Petrological Database

 Click on the link below to access the PetDB data collection:

 Search PetDB


PetDB sample locations viewed in the GeoMapApp application.


PetDB is a global synthesis of chemical, isotopic, and mineralogical data for rocks, minerals, and melt inclusions. PetDB's current content focuses on data for

  • igneous and metamorphic rocks from the ocean floor, specifically mid-ocean ridge basalts and abyssal peridotites;
  • xenolith samples from the Earth's mantle and lower crust. (NEW!)


PetDB is maintained and continuously updated as part of the EarthChem data collections. The current version is PetDB v.2.8.6, released on June 11, 2015.


GeoMapApp, used to create the above image, is an integrated mapping application developed as part of the Marine Geoscience Data System.


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Questions? Contact us at: