The field of geochronology involves more than just age determination. It also includes the chronostratigraphy of the Earth, in a wider sense, the eosmochronology of the universe. On the basis of the development of the biological world found in them, chronostratigraphic sequences reflect the history of the Earth in a qualitative way. Their significance lies in the possibility widely scattered natural records, often no longer in their original formation, and assign them to a previously reconstructed time sequence. In chronostratigraphic studies, attributes that can be assigned to a specific period of time, e.g., a certain isotopic composition (Chap. 6), are required. In biostratigraphic studies, key fossils that permit global correlations are of importance for correlating geological sequences whose biofacies and lithofacies differ completely from place to place.
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- Phanerozoic Time-Scale
Prof. Dr. Mebus A. Geyh
Prof. Dr. Helmut Schleicher
- Springer Berlin Heidelberg