The volume documents the field work of Robert J. Horodyski in Chuar, Arizona, May 8 - 23, 1982, while working at Tulane University. First page contains travel details. Entries are dated, narrative in structure and contain details relating to travel, route traveled in the field, work methods, daily work, temperature and weather, samples taken, descriptions of samples with identifiers (nonconsecutive), and photographs taken. Locations include "Walcott member" and Nankoweap Butte.
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