High latitude meteoric d18O compositions: Paleosol siderite in the Middle Cretaceous Nanushuk Formation, North Slope, Alaska

Abstract

Siderite-bearing pedogenic horizons of the Nanushuk Formation of the North Slope, Alaska, provide a critical high paleolatitude oxygen isotopic proxy record of paleoprecipitation, supplying important empirical data needed for paleoclimatic reconstructions and models of ‘‘greenhouseworld’’ precipitation rates. Siderite d18O values were determined from four… (More)

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Cite this paper

@inproceedings{Ufnar2004HighLM, title={High latitude meteoric d18O compositions: Paleosol siderite in the Middle Cretaceous Nanushuk Formation, North Slope, Alaska}, author={David F. Ufnar and Greg A. Ludvigson and Luis Antonio Gonz{\'a}lez and Robert L. Brenner and Brian J. Witzke}, year={2004} }