TY - RPRT TI - North polar region of Mars: Advances in stratigraphy, structure, and erosional modification AU - Kenneth L. Tanaka AU - J. Alexis P. Rodriguez AU - James A. Skinner AU - Mary C. Bourke AU - Corey M. Fortezzo AU - Kenneth E. Herkenhoff AU - Eric J. Kolb AU - Chris Okubo PY - 2008 DO - 10.1016/j.icarus.2008.01.021 UR - https://pubs.usgs.gov/publication/70000313 ID - 70000313 ER -