title: Reply to Simon and Reed: Independent and converging results rule out historic disturbance and confirm age constraints for Barrier Canyon rock art.
authors.affiliation: Department of Geology and joel.pederson@usu.edu.
authors.forename: Joel L
authors.initials: JL
authors.lastname: Pederson
authors.affiliation: Department of Geology and Geography and Earth Sciences, Aberystwyth University, Aberystwyth SY23 3DB, United Kingdom;
authors.forename: Melissa S
authors.initials: MS
authors.lastname: Chapot
authors.affiliation: Department of Sociology, Social Work, and Anthropology, Utah State University, Logan, UT 84322;
authors.forename: Steven R
authors.initials: SR
authors.lastname: Simms
authors.affiliation: Nordic Laboratory for Luminescence Dating, Department of Geoscience, Aarhus University, DK-4000 Roskilde, Denmark; Center for Nuclear Technologies, Technical University of Denmark, DK-4000 Roskilde, Denmark; and.
authors.forename: Reza
authors.initials: R
authors.lastname: Sohbati
authors.affiliation: Department of Geology and.
authors.forename: Tammy M
authors.initials: TM
authors.lastname: Rittenour
authors.affiliation: Nordic Laboratory for Luminescence Dating, Department of Geoscience, Aarhus University, DK-4000 Roskilde, Denmark;
authors.forename: Andrew S
authors.initials: AS
authors.lastname: Murray
authors.affiliation: Canyonlands National Park, Moab, UT 84532.
authors.forename: Gary
authors.initials: G
authors.lastname: Cox
mesh_terms: D019015:Geologic Sediments; D049449:Luminescence; D055110:Radiometric Dating / Q000379:methods*