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![]() Date: 2007-05-02 15:04:34Prehistory Hettangian Rhaetian Sinemurian Norian Pliensbachian Toarcian Aquitaine Basin Palynology Jurassic Historical geology Geology | Add to Reading List |
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![]() | Profiles of Geoscientists Brent Constanz President and CEO Norian Corporation Cupertino, CA Education:DocID: 1pCKQ - View Document |
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![]() | Carnian/Norian boundary based on conodonts corresponds to basal Newark magnetozone E7 at about 228 Ma (adopting Newark astrochronology), implying a long Norian with a duration of l20m.y. and a Rhaetian of about 6 m.y. duDocID: 1eVTk - View Document |