Sagebrush bark sandal from Catlow Cave, radiocarbon dated to 9,300 years old
In 1938 archaeologist Luther Cressman (from the University of Oregon) excavated at Fort Rock
Cave, located in a small volcanic butte approximately half a mile west of the Fort Rock volcanic crater in
central Oregon. The Fort Rock Basin is the most northwesterly sub-basin of the
Great Basin, Western North America's vast intermontane desert.
Cressman found dozens of sandals below a layer of volcanic ash, subsequently determined to come from the eruption of the Mt. Mazama volcano 7500 years ago. Named for the site where they were first found, Fort Rock-style sandals have since been reported from ancient deposits in several Northern Great Basin caves.
Sagebrush bark sandals from Fort Rock Cave, similar to specimens radiocarbon dated from 10,500-9,300 years old.
Fort Rock sandals are stylistically distinct. They are twined (pairs of weft
fibers twisted around warps), and have a flat, close-twined sole, usually with
five rope warps. Twining proceeded from the heel to the toe, where the warps
were subdivided into finer warps and turned back toward the heel. These fine
warps were then open-twined (with spaces between the weft rows) to make a toe
flap. Cressman surmised that a tie rope attached to one edge of the sole
wrapped around the ankle and fastened to the opposite edge.
Most dated Fort Rock-style sandals are from Fort Rock Cave, but directly
dated sandals of this type are also known from Cougar Mountain and Catlow
Caves. Directly dated Fort Rock style sandals range in age from at least 10,500
BP to 9200 BP (based on dendrocalibrated radiocarbon ages). For more
information, refer to Connolly and Cannon 1999.
Table 1. Directly dated Fort Rock-style sandals, northern Great Basin.
14C Age
Lab No.
Age Range (cal BP, 1 sigma)
Dated Material
Site
Reference(s)
9188ア480*
C-428a
10,920-9650 BP
sagebrush bark
Fort Rock Cave
Arnold and Libby 1951
8916ア540*
C-428b
10,440-9380 BP
sagebrush bark
Fort Rock Cave
Cressman 1951; Bedwell and Cressman 1971
8308ア43
AA-30056
9380-9240 BP
sagebrush bark
Catlow Cave
Connolly and Cannon 1999
8510ア250
UCLA-112
9840-9240 BP
tule
Cougar Mtn. Cave
Ferguson and Libby 1962; Connolly 1994
8500ア140
I-1917
9530-9380 BP
sagebrush bark
Fort Rock Cave
Bedwell and Cressman 1971
9215ア140
AA-9249
10,360-10,020 BP
sagebrush bark
Fort Rock Cave?
Connolly and Cannon 1999
8715ア105
AA-9250
9870-9520 BP
sagebrush bark
Fort Rock Cave?
Connolly and Cannon 1999
Note: *The commonly cited
9053ア350 age for the "Fort Rock sandal" is actually an average of
these two dates, run on "several pairs of woven rope sandals" (Arnold
and Libby 1951:117). The weighted average of these two ages produces an age range
of 10,390-9650 cal BP.
Russian page translation by Alisa Bagrii alisa.bagrii@everycloudtech.com
References
キ
Arnold, J. R. and W. F.
Libby
1951 Radiocarbon Dates. Science 113(2927):111-120.
キ
Bedwell, Stephen F. and
Luther S. Cressman
1971 Fort Rock Report: Prehistory and Environment of the Pluvial Fort Rock Lake
Area of South-Central Oregon. In Great Basin Anthropological Conference
1970: Selected Papers, edited by C. Melvin Aikens, pp. 1-25. University of
Oregon Anthropological Papers 1. Eugene
キ
Connolly, Thomas J. and
William J. Cannon
1999 Comments on "America's Oldest Basketry." Radiocarbon 41(3):309-313.
キ
Cressman, Luther S.
1951 Western Prehistory in the Light of Carbon 14 Dating. Southwestern
Journal of Anthropology 7(3):289-313.
キ
Cressman, Luther S.
1942 Archaeological Researches in the Northern Great Basin. Carnegie
Institution of Washingon Publication 538. Washington, D. C.
キ
Ferguson, G. J. and W.
F. Libby
1962 UCLA Radiocarbon Dates. Radiocarbon 4:109-114.
Page design/contact:? Tom Connolly