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Devonian |
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Devonian Geology of, denoting, or formed in the fourth period of the Palaeozoic era, between the Silurian and Carboniferous periods, lasting 60–70 million years during which amphibians first appeared Devonian [di′vō·nē·ən] (geology) The fourth period of the Paleozoic Era, covering the geological time span between about 412 and 354 × 106years before present. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| If Hartz and his colleagues are right, however, that will raise questions about the Devonian age of other early tetrapods, say paleontologists. Primary oil targets will include the Mission Canyon & McGowan formations at 5000 - 8000 feet; the Devonian Age Baaken & Nisku formations at 7000 - 9000 feet. FME's 11 exploration permits, totaling 4,874 km2, cover Upper Devonian to Lower Carboniferous sediments/volcanics and their unconformable contact with underlying Palaeoproterozoic metasediments, and granitoids of Proterozoic and Silurian to Early Devonian ages. |
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