EarthChem Data Services

earthchem.org

earth science community के open geochemistry, geochronology और petrology datasets। rock और sediment chemistry सवालों के लिए अच्छा आधार।

This is a specialist archive of geochemistry, geochronology and petrology data, put together by earth scientists rather than a general repository, so the units and methods are documented the way a geochemist would expect. It's the right pick for a notebook asking specific questions about rock or sediment composition and dating methods. Its narrowness is also its limitation: outside earth science it has nothing to offer.