An international team of over forty stratigraphic experts have helped to build the most up to date international stratigraphic framework for the Precambrian and Phanerozoic. This successor to A Geologic Time Scale 1989 by W. Brian Harland et al. (CUP 0521 387655) begins with an introduction to the theory and methodology behind the construction of the new time scale. The main part of the book is devoted to the scale itself, systematically presenting the standard subdivisions at all levels using a variety of correlation markers. Extensive use is made of isotope geochronology, geomathematics and orbital tuning to produce a standard geologic scale of unprecedented detail and accuracy with a full error analysis. A wallchart summarising the whole time scale, with paleogeographic reconstructions throughout the Phanerozoic, is included in the back of the book. The time scale will be an invaluable reference source for academic and professional researchers and students INDICE: Introduction: Introduction. Chronostratigraphy - linking time and rock; Part II. Concepts and Methods. Biostratigraphy. Earth's orbital parameters and cycle stratigraphy. The geomagnetic polarity time scale. Radiogenic isotope geochronology. Stable isotopes. geomathematics. Geologic Periods. The Precambrian: the Archaen and Proterozoic eons. The Cambrian period. The Ordovician period. The Silurian period. The Devonian period. The Carboniferous period V. The Permian period. The Triassic period. The Jurassic period. The Cretaceous Period. The Paleogene period. The Neogene period. The Pleistocene and Holocene epochs. Summary. Construction and summary of the geologic time scale. Appendices. References.
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