Glencoe Earth Science

Chapter 13: Clues to Earth's Past

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Topic: Relative Dating
Visit these sites to learn more about relative dating of rocks. Use the information to complete the activity in your book.

Relative Dating

( http://www.kabrna.com/cpgs/stratigraphy/superposition.htm )
Rocks and Layers

( http://pubs.usgs.gov/gip/fossils/rocks-layers.html )
Relative Age Dating of Rocks

( http://walrus.wr.usgs.gov/infobank/programs/html/school/moviepage/09.01.15.html )

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Topic: Correlating with Index Fossils
Visit these sites to learn about using index fossils to match up layers of rock.

Correlation and Strata

( http://www.ucmp.berkeley.edu/fosrec/MunGun3.html )
Using Fossils

( http://igs.indiana.edu/geology/fossils/usingfossils/index.cfm )
Index Fossils

( http://en.wikipedia.org/wiki/Index_fossils )

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Topic: Isotopes in Ice Cores
Visit these sites to learn more about how isotopes in ice cores are used to learn about Earth’s past. Use the information to complete the activity in your book.

NOVA Online – Ice Core Timeline

( http://www.pbs.org/wgbh/nova/warnings/stories/nojs.html )
Ice and Isotopes

( http://www.pnas.org/cgi/content/full/97/4/1331 )
Ice Cores

( http://en.wikipedia.org/wiki/Ice_core )

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Coelacanth

( http://www.dinofish.com/ )
American Museum of Natural History

( http://www.amnh.org/exhibitions/expeditions/treasure_fossil/Treasures/Coelacanth/coelacan.html?aa )
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