Use of index fossils (ammonites, conodonts, foraminifera) to correlate rock units across continents and calibrate the geological time scale (GSSP golden-spike system). Complements radiometric dating where appropriate material is available.
Use of index fossils (ammonites, conodonts, foraminifera) to correlate rock units across continents and calibrate the geological time scale (GSSP golden-spike system). Complements radiometric dating where appropriate material is available.