Browsing Geological Sciences electronic theses and dissertations (MU) by Title "Neodymium and oxygen isotopic constraints on upper Ordovician paleoceanographic evolution across the Dubuque/Maquoketa contact in NE Iowa and SE Minnesota"
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Neodymium and oxygen isotopic constraints on upper Ordovician paleoceanographic evolution across the Dubuque/Maquoketa contact in NE Iowa and SE Minnesota
(University of Missouri--Columbia, 2011)Measurements of conodonts, phosphatic brachiopods, and authigenic phosphate show no consistent trends in [superscript TM]18O[subscript phos] values but do show a gradual 2-3 unit [epsilon][subscript Nd] increase across the ...