Difference between revisions of "Jurassic"
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− | + | The '''Jurassic''' [[period (geology)|period]] is part of the [[geologic system]] of classifying geologic formations. | |
− | [[ | + | The Jurassic period is part of the [[Mesozoic]] era, and is divided into Lower, Middle, and Upper epochs. The Jurassic is preceded by Permian era and followed by the Cretaceous era. |
− | + | The Jurassic was named from the [[France|French]] word (Jurassique) for the Jura mountains of [[Switzerland]].<ref>[http://www.etymonline.com/index.php?search=jurassic&searchmode=none Online Etymology Dictionary]</ref><ref>[http://www.geol.ucsb.edu/Outreach/TimeScale/jurassic.html Jurassic Period] (Department of Earth Science, University of California, Santa Barbara).</ref> | |
− | [[ | + | |
+ | Under the uniformitarian dates assigned by secular geologists, it represents approximately the period of Earth's history from 200 million years ago to 145 million years ago.<ref>Gradstein, F.M., and Ogg, J.G.,[http://www.stratigraphy.org/scale04.pdf Geologic Time Scale 2004 – Why, How, and Where Next!]</ref> Young Earth creationists reject these dates (see [[geologic system]]). | ||
==References== | ==References== |
Revision as of 13:11, April 28, 2007
The Jurassic period is part of the geologic system of classifying geologic formations.
The Jurassic period is part of the Mesozoic era, and is divided into Lower, Middle, and Upper epochs. The Jurassic is preceded by Permian era and followed by the Cretaceous era.
The Jurassic was named from the French word (Jurassique) for the Jura mountains of Switzerland.[1][2]
Under the uniformitarian dates assigned by secular geologists, it represents approximately the period of Earth's history from 200 million years ago to 145 million years ago.[3] Young Earth creationists reject these dates (see geologic system).
References
- ↑ Online Etymology Dictionary
- ↑ Jurassic Period (Department of Earth Science, University of California, Santa Barbara).
- ↑ Gradstein, F.M., and Ogg, J.G.,Geologic Time Scale 2004 – Why, How, and Where Next!