Version of 1976 Marble Canyon report prepared for publication. Rejected by "Plateau."

Pollen study of 6 surface and 11 archaeological-context samples from 2 sites of the Navajo Irrigation District salvage archaeology project. Correlation with the Colorado Plateau Pollen Chronology is consistent with ceramic dating of the sites and features sampled. Includes discussion of this and other occurrences of "Juglans."

Letter report of pollen study suggests the Colorado Plateau Pollen Chronology

Squash and possible maize pollen in sediment samples from checkdams suggests the features are prehistoric and were used for crop production. No evidence that local environment was different when the features were used.