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Selected Geology
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Selected Geology /
Geologic Time Scale
American Geological Institute (AGI), Alexandria, VA: Earth Science World. Images from the Earth Science World Image Bank, geoscience books, information on careers in the geosciences, and more. Go to: Interactive Geological Time Scale.
BBC News: Geological time gets a new period. The Ediacaran Period covers some 50 million years of ancient time on our planet from 600 million years ago to about 542 million years ago.
Museum of Paleontology (UCMP), University of California at Berkeley: Web Lift for Geological Time. See also: The Geologic Time Scale in Historical Perspective.
Simon Biggs: Fossil Collections of the World. Check the rubric Geology Time Scale. Not updated for a long time.
Goran Bogicevic, Department of Regional Geology and Palaeontology, Faculty of Mininig and Geology at Belgrade, Yugoslavia: Boggy´s Geolinks. Scroll down to: "Stratigraphy", e.g. Triassic.
The British Geological Survey (BGS): BGS Education, The BGS Geological Timechart. As the basis of the BGS Geological Timechart they have chosen the timescale of Gradstein and Ogg (1996) for the Phanerozoic and that of Cowie and Bassett (1989) for the Proterozoic (Precambrian). Subdivision of the Archaean follows an unpublished decision by the Precambrian Subcommission of the IUGS.
Donald Brownlee and Peter Ward (page hosted by University of Washington, Seattle): Earth´s clock of life.
Laurie Cantwell, (Montana State University), The Science Education Resource Center (SERC), Carleton College: Teaching Geoscience with Visualizations: Using Images, Animations, and Models Effectively, Geologic Time. This website highlights animations, images, interactive graphics and videos used to teach the concept of geologic time in an introductory geology course. Visualizations cover the specific topics of earth history, relative age dating and life through geologic time.
CHRONOS (Department of Geological and Atmospheric Sciences, Iowa State University, Ames, Iowa). The CHRONOS System provides a platform for modern, innovative Earth history research, hosts and develops educational resources, and gives access to the general public to new knowledge of Earth science facts and issues.
! CHRONOS (page hosted at Department of Geological and Atmospheric Sciences, Iowa State University, Ames, Iowa). CHRONOS's main objective is to develop a network of databases and visualization and analytical methodologies that broadly deal with chronostratigraphy. Go to: Time Converter. The CHRONOS project has created a web site for converting between Berggren et al. 1995 and Gradstein et al. 2004.
ES Designs: Geologic Time Scale. This geologic time scale provides a directory of links to web pages for each time interval.
Bibliothek des Wissenschaftsparks Albert Einstein, GeoForschungsZentrum Potsdam, Germany: Stratigraphic Table of Germany 2002. Order conditions. See also here (in German).
! Geological Society of America: Geoscience Initiatives, Geologic Time Scale.
Geology.com: Geologic Time Scale. A printable time line for the geological sciences.
S.R. Gradstein et al.(2012): The Geologic Time Scale 2012. Google books, see also here (Table of contents, Elsevier).
! F.M. Gradstein and J.G. Ogg (2009): The geological time scale. PDF file, In: S.B. Hedges and S. Kumar (eds.): The Timetree of Life (see here).
S.B. Hedges and S. Kumar (2009): Discovering the Timetree of Life. PDF file, In: S.B. Hedges and S. Kumar (eds.): The Timetree of Life (see here).
! International Commission on Stratigraphy (ICS). ICS (within the International Union of Geological Sciences) is the only organisation concerned with stratigraphy on a global scale. One of its major objectives are the establishment of a standard, globally applicable stratigraphic scale.
Christof Kuhn, BOKU (Universität für Bodenkultur)- University of Natural Resources and Applied Life Sciences, Vienna: Etymology of geological time units.
Susan E. Lewis, Kristen A. Lampe and Andrew J. Lloyd (an ActionBioscience.org original article): Once in a Million Years: Teaching Geologic Time. Helping students understand the magnitude of geologic time.
LithStrat (supported by the Österreichische Akademie der Wissenschaften). A lithostratigraphical database. Go to: Richtlinien zur stratigraphischen Nomenklatur. A guide about stratigraphical nomenclature (in German). From Steininger & Piller (1999), Courier Forschungsinstitut Senckenberg, 209.
A. Lugowski (Computer Science Dept., Univ. Calif. Santa Barbara) and J. Ogg (Dept. Earth and Atmos. Sci., Purdue University): TimeScale Creator This is a free JAVA package to explore and create charts of any portion of the geologic time scale from an extensive suite of global and regional events in Earth History.
Andrew MacRae: Radiometric Dating and the Geological Time Scale. Circular Reasoning or Reliable Tools? This TalkOrigins site (a Usenet newsgroup devoted to the discussion and debate of biological and physical origins) discusses the way radiometric dating and stratigraphic principles are used to establish the conventional geological time scale.
! NORGES, Network of Offshore Records of Geology and Stratigraphy. Go to: The 2004 Time Scale. F.M. Gradstein, J.G. Ogg, A.G. Smith et al.: Geologic Time Scale 2004. Cambridge University Press. See also: Time scales through history. PDF file.
Jeff Poling, Dinosauria On-Line: Geologic Ages of Earth History.
Sue Rigby, Geology, Geophysics, Environmental Geoscience, Grant Institute, University of Edinburgh: COURSE MATERIALS. Go to: GEP COURSE MATERIALS, The Geological Time Scale. PDF file.
! Robert A. Rohde, International Commission on Stratigraphy (ICS): GeoWhen Database. GeoWhen Database is an attempt to sort out the mess that man has made of the geologic timescale. This project aims to reconcile the international stratigraphic standards with many of the regional and archaic naming schemes that appear in the literature.
Steven M. Stanley (W. H. Freeman & Company): Earth System History. An online companion for the student and the instructor (interactive exercises, key terms, review questions, web links).
! U.S. Geological Survey, Reston, VA: Geolex. Geolex is a search tool for lithologic and geochronologic unit names.
U.S. Geological Survey (USGS), Reston, VA: The Learning Web. A site dedicated to K-12 education and life-long learning. Go to: Mud Fossils, Major Divisions of Geological Time.
US Geological Survey and the National Park Service: USGS Geology in the Parks, What is Geologic Time?
USGS/Cascades Volcano Observatory, Vancouver, Washington: The Geologic Time Scale.
! Wikipedia, the free encyclopedia: Geologic time scale, and Global Boundary Stratotype Section and Point.
YAHOO:
Earth Sciences > Geology and Geophysics >
Geologic Time. A link directory.
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