Thorne Cave, Northeastern Utah: Geology
Autor: | Harold E. Malde, Asher P. Schick |
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Rok vydání: | 1964 |
Předmět: |
010506 paleontology
Archeology History geography geography.geographical_feature_category 060102 archaeology Terrace (agriculture) Desert varnish Museology 06 humanities and the arts 01 natural sciences Archaeology Debris law.invention Cave painting Arts and Humanities (miscellaneous) Cave law Cliff 0601 history and archaeology Alluvium Radiocarbon dating Geology 0105 earth and related environmental sciences |
Zdroj: | American Antiquity. 30:60-73 |
ISSN: | 2325-5064 0002-7316 |
DOI: | 10.2307/277631 |
Popis: | Geologic interest in Thorne Cave stems from its link with valley alluvium along Cliff Creek, which accumulated to a height of 48 ft., continued to build up another 13 ft. while men lived here, and then reached 30 ft. higher — sealing in the signs of man. Mineralogic study shows that ground water then circulated through the cave deposits for a considerable time. The alluvium is correlated with the lower part of the Tsegi Formation of the Navajo country. Cutting of a terrace at mid-depth in the valley alluvium reopened Thorne Cave, probably before the Christian era, and desert varnish then began to form on the cave brow. Radiocarbon dates from presumably correlative deposits suggest that the cave debris is about 4000 years old — a conclusion consistent with dates of 4230 and 4170 years from Thorne Cave. |
Databáze: | OpenAIRE |
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