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PERMIAN COLONIAL RUGOSE CORALS FROM THE WRANGELLIAN TERRANE IN ALASKA
- Article from:
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Journal of Paleontology
- Article date:
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September 1, 2008
- Author:
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Copyright informationCopyright Paleontological Society Sep 2008. Provided by ProQuest LLC. (Hide copyright information)
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INTRODUCTION
WRANGELLIA WAS one of the first described and probably the most widely known of the North American Cordilleran terranes. On the basis of Triassic stratigraphy (Jones et al., 1977) and paleomagnetism (Mulhouse, 1977), the name Wrangellia was proposed for large areas of outcrop in Alaska, British Columbia, and Oregon (Fig. 1).
The most recent paleomagnetic data from the amalgamated Alexander-Wrangellian terrane suggest the Early Permian location of this now dispersed terrane was at 26° ± 5.3°N (Butler et al., 1997). Faunal diversity trends among brachiopods, rugose corals, and fusulinids, however, suggest placement at the latitude of the Yukon, up to 1,000 km farther north as ...
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