Credits
Tutorial Menu:
1. Two photos of people from around the world and two photos of apes reproduced with permission from Corel Corporation, Ottawa, Canada Interpreting the Fossil Record:
1. Photo of a piece of amber with a spider trapped within reproduced under a Creative Commons Attribution 2.0 Generic license
(source = http://commons.wikimedia.org/wiki/File:Spider_in_amber_(1).jpg)2. Photo of the head of Tollund Man public domain photo (source: http://en.wikipedia.org/wiki/File:Tollundmannen.jpg) 3. Photo of a fossil of an extinct marine mollusk reproduced with permission from Corel Corporation, Ottawa, Canada 4. Photo of a live nautilus reproduced with permission from Corel Corporation, Ottawa, Canada 5. Drawing illustrating the mineralization of bone underground produced by Dennis O'Neil 6. Photo of Marcellin Boule from Marcellin Boule, Fossil Men: Elements of Human Paleontology, 2nd ed. (1923) 7. Drawing of an early 20th century mistaken depiction of a Neandertal reproduced from Illustrated London News (1909) Overview of Dating:
1. Drawing of relative dating by relating geological strata produced by Dennis O'Neil Relative Techniques:
1. Drawing of geological unconformities produced by Dennis O'Neil 2. Drawing of changes in the amounts of Fluorine and Nitrogen over time in a buried bone produced by Dennis O'Neil 3. Piltdown Man Hoax--podcast (copyright 2006 WGBH Educational Foundation, Boston) linked with permission from WGBH Educational Foundation, Boston Chronometric Techniques: Part I:
1. Photo of ancient Maya glyphs reproduced with permission from Corel Corporation, Ottawa, Canada 2. Photo of tree-rings produced by Dennis O'Neil 3. Drawing of the correlation between tree growth-rings and rainfall amounts produced by Dennis O'Neil 4. Drawing of the process of creating a master tree-ring sequence produced by Dennis O'Neil 5. Drawing showing the process of determining the date of a log sample by comparison with a master tree-ring sequence produced by Dennis O'Neil 6. Drawing of thermoremnant magnetism produced by Dennis O'Neil 7. Map showing the wandering magnetic north pole in recent centuries produced by Dennis O'Neil (derived from Kenneth F. Weaver, "Magnetic Clues Help Date the Past", National Geographic, May 1967, pp. 696-701; National Resources Canada, Tracking the North Magnetic Pole, 1998, http://www.geolab.nrcan.gc.ca/geomag/e_nmpole.html); and North Magnetic Pole Could Be Leaving Canada, March 20, 2002, http://www.cnn.com/2002/TECH/space/03/20/north.pole/index.html) Chronometric Techniques: Part II:
1. Graph showing the geometric rate of atomic decay produced by Dennis O'Neil 2. Drawing showing the natural production of carbon-14 and its entrance into the food chain produced by Dennis O'Neil (goat image reproduced with permission from Corel Corporation, Ottawa, Canada) 3. Photo of a man working with a radiocarbon dating sample that has been converted to acetylene gas for analysis with a mass spectrometer reproduced with permission from the U.S. Geological Survey 4. Graph of radiocarbon and tree-ring date comparisons produced by Dennis O'Neil (derived from H. E. Suess "Secular Variations of the Cosmic Ray Produced Carbon-14 in the Atmosphere," Journal of Geophysical Research, 70:5950, 1963) 5. Drawing of dating volcanic ash strata above and below a bone sample to determine a minimum and a maximum age produced by Dennis O'Neil 6. Drawing of fission tracks in obsidian seen through an optical microscope produced by Dennis O'Neil 7. Drawing of thermoluminescence release resulting from rapidly heating a clay sample produced by Dennis O'Neil 8. Graph of time ranges of chronometric dating techniques produced by Dennis O'Neil Glossary: (illustrations already referenced above are not listed)
1. Drawings of Old World Paleolithic projectile point types used as artifact time markers produced by Dennis O'Neil 2. Graph of seriation showing the frequency of three pottery styles changing through time produced by Dennis O'Neil
Copyright © 2000-2012 by Dennis O'Neil. All rights reserved.
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