TY - RPRT TI - Carbon isotopes from fossil packrat pellets and elevational movements of Utah agave plants reveal the Younger Dryas cold period in Grand Canyon, Arizona AU - K.L. Cole AU - S.T. Arundel PY - 2005 DO - 10.1130/g21769.1 UR - https://pubs.usgs.gov/publication/70028033 ID - 70028033 ER -