The Earth Through Time, 10th Edition by Harold L. Levin CHAPTER 3—TIME AND GEOLOGY Web Links The International Stratigraphic Chart http://stratigraphy.org/column.php?id=Chart/Time%20Scale The International Stratigraphic Chart is the most up-to-date version of the geologic time chart, produced by the International Commission on Stratigraphy. Overview of Global Boundary Stratotype Sections and Points http://stratigraphy.org/column.php?id=GSSPs Detailed information to support the new International Stratigraphic Chart. The "Overview of Global Boundary Stratotype Sections and Points (GSSP's)" details the principal events during each subdivision of the geologic time chart. Click on the links to see where the chronostratigraphic boundaries have been defined. Detailed maps, stratigraphic sections and fossil data are listed for stage and system boundaries. This is the most up-to-date and definitive information about the geologic time chart. Understanding Geologic Time http://www.ucmp.berkeley.edu/education/explorations/tours/geotime/geoti me.html Animated educational module by the University of California Museum of Paleontology. Sponsored by the National Science Foundation. Berkeley’s Geological Time Machine http://www.ucmp.berkeley.edu/help/timeform.php Explore the geologic time scale with the University of California Museum of Paleontology. Waikato Radiocarbon Dating Laboratory http://www.c14dating.com/ Radiocarbon WEB-info from New Zealand. Method, measurement, applications, sample prep labs, K-12 information, etc. Radiometric Dating: A Christian Perspective http://www.asa3.org/ASA/resources/Wiens.html Simple descriptions of how a number of the dating techniques work, accuracy of the half-lives of radioactive elements and dates, and how dates are checked © 2013 JOHN WILEY & SONS, INC. ALL RIGHTS RESERVED. Page 1 against one another. The paper clarifies a number of misconceptions about dating. Virtual Age Dating http://www.sciencecourseware.org/VirtualDating/ An interactive exercise to teach you how geologists and archeologists determine the ages of rocks and ancient artifacts in two activities: Isochron Dating and Radiocarbon Dating. Principles of Stratigraphy – the article http://www.nhm.ac.uk/hosted_sites/paleonet/MacLeod/pdfs/strat_principles .pdf A learned discussion of stratigraphic principles from Steno to date. © 2013 JOHN WILEY & SONS, INC. ALL RIGHTS RESERVED. Page 2