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Wildhorse Canyon Obsidian Quarry / Milford Obsidian Quarry
The Wildhorse Canyon Obsidian Quarry is significant for several reasons. First, it is the only obsidian flow in Utah, presently known, which has been extensively used prehistorically as a source of raw materials. Recent studies (Condie and Blaxland 1970) of trace element distributions in obsidian artifacts from Hogup and Danger Caves and from the Wildhorse Canyon Obsidian flows do indicate that the prehistoric groups who inhabited these caves for 8000 to 10,000 years were not utilizing Wildhorse Canyon obsidian; instead, they evidently utilized two other sources. At this time, however, the location of these other quarries is completely unknown. There are also obsidian flows in western Utah that apparently were never used aboriginally as quarries, or at least there is no evidence thus far for such use. Thus, the Wildhorse Canyon. Obsidian Quarry offers the only opportunity within this region for the study of one particularly important aspect of prehistoric cultural systems: the procurement of raw materials for the manufacture of tools necessary in all aspects of daily life. The extremely large quantity of lithic material (in the form of blanks, preforms, debitage, cores, etc.) at the quarry itself, as well as at the numerous camp and manufacturing sites which surround the quarry, is still present, in situ, for such analysis.
The Wildhorse Canyon Obsidian Quarry is also the only quarry site in western Utah whose material has been definitely traced to specific archeological sites some distance away from the quarry location itself. The most important of these sites, and the ones which have been subjected to the most intensive archeological investigation, are four large agricultural Fremont villages located in the Parowan Valley, These sites (Parowan, Paragonah, Median Village, and Evans Mound) are dated A.D. 900(?) to 1300, and thus furnish evidence for the intensive use of the Wildhorse Canyon Obsidian Quarry by one particular culture for this particular time period. Analysis of the obsidian material recovered from these sites has furnished important information on the logistics and method of procurement of obsidian from the quarry.
“No large obsidian cores have been reported from excavations at Parowan or Paragonah and none were recovered from Median Village or the Evans Mound. This suggests that most of the knapping process was conducted near the obsidian source to minimize the bulk of the transported materials. The numerous chipping stations within a mile or two of Wildhorse Canyon (Rudy, 1953) lend support to this interpretation.” (Berry 1972:156-157).
As noted in the previous section, there is reason to believe that the quarry was the source of raw materials for a considerably larger area and longer time span that that represented by the agricultural Fremont groups of the Parowan Valley. The number of recent studies on source areas (e.g. Jack 1971) and on the usefulness of dating obsidian directly through hydration rates (Findlow, Bennett, Ericson and De Atley 1975) can only be an indication of the enormous quantity of information that can be extracted from the scientific study of what is apparently the major obsidian quarry in western Utah–the Wildhorse Obsidian Quarry.
The text above is from the nomination form from when this site was added to the National Historic Register (May 13, 1976). (#76001810)










