Jim Ogg is a Professor in the Department Earth and Atmospheric Sciences at Purdue University and has served as Secretary-General of the International Commission on Stratigraphy since 2000. As part of this role he developed the TimeScale Creator databases and visualization system (freely available at www.stratigraphy.org). His research specialties include Mesozoic marine stratigraphy, paleomagnetism, and climate cycles.
Inhaltsangabe
Introduction Planetary time scale Precambrian period Cambrian period Ordovician period Silurian period Devonian period Carboniferous period Permian period Triassic period Jurassic period Cretaceous period Paleogene period Neogene period Quaternary period Appendix. Standard colors of the international divisions of geologic time References Index.
Introduction Planetary time scale Precambrian period Cambrian period Ordovician period Silurian period Devonian period Carboniferous period Permian period Triassic period Jurassic period Cretaceous period Paleogene period Neogene period Quaternary period Appendix. Standard colors of the international divisions of geologic time References Index.
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