TY - RPRT TI - High latitude meteoric δ 18 O compositions: Paleosol siderite in the Middle Cretaceous Nanushuk Formation, North Slope, Alaska AU - David F. Ufnar AU - Greg A. Ludvigson AU - Luis A. Gonzalez AU - Richard L. Brenner AU - Brian J. Witzke PY - 2004 DO - 10.1130/b25289.1 UR - https://pubs.usgs.gov/publication/70027490 ID - 70027490 ER -