Barnes, Calvin G.; Frost, Carol D.; Yoshinobu, Aaron S.; McArthur, Kelsey; Barnes, Melanie; Allen, Charlotte M; Nordgulen, Oystein; Prestvik, Tore
The Helgeland Nappe Complex consists of a sequence of imbricated east-dipping nappes that record a history of Neoproterozoic- Ordovician, sedimentary, metamorphic, and magmatic events. A combination of U-Pb dating of zircon and titanite by laser-ablation- inductively coupled plasma-mass spectrometry plus chemostratigraphic data on marbles places tight constraints on the sedimentary, tectonic, and thermal events of the complex. Strontium and carbon isotope data have identifi ed Neoproterozoic...[Show more]
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