The 14th century Caddo Leaning Rock site was initially discovered in the Fall of 2004. It was located during reconnaissance to search out a location for the survey portion of the Texas Archeologica! Society's Academy IO I held in... more
The 14th century Caddo Leaning Rock site was initially discovered in the Fall of 2004. It was located during reconnaissance to search out a location for the survey portion of the Texas Archeologica! Society's Academy IO I held in Tyler in February 2005. This was not a formal survey with transect lines. nor one using regularly spaced shovel tests. but was rather more of a "windshield"' type survey, consisting of driving across pasture lands looking at gopher mounds and checking fore, evidence of archeological deposits on likely looking landforms. !n this area. landform and soil type seem to be the major determining factors in locating Caddo sites. The sandy soils in the scattered gopher mounds appeared almost white. especially in droughty conditions that prevailed at the time. causing an area with darker mounds of soil to catch my attention. Pocket gophers (G. breviceps) can play havoc with buried archeological deposits but can also be useful in bringing buried soil...
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info:eu-repo/semantics/nonPublishe
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The 45th Avenue project site (Avenue 45th) is located on the southwest corner of Lincoln Avenue and Avenue 45 in Los Angeles, California. Four soil samples, collected from a boring and a trench in lacustrine deposits, were submitted for... more
The 45th Avenue project site (Avenue 45th) is located on the southwest corner of Lincoln Avenue and Avenue 45 in Los Angeles, California. Four soil samples, collected from a boring and a trench in lacustrine deposits, were submitted for macrofloral analysis to recover and identify charred floral remains suitable for AMS radiocarbon age determination. Three samples from B-4 with expected dates between 15,000 and 6,000 years BP (John Helms, personal communication June 15, 2015) and one sample from ST-1 were submitted for radiocarbon analysis.
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The Paisley Caves in Oregon record the oldest directly dated human remains (DNA) in the Western Hemisphere. More than 100 high-precision radiocarbon dates show that deposits containing artifacts and coprolites ranging in age from 12,450... more
The Paisley Caves in Oregon record the oldest directly dated human remains (DNA) in the Western Hemisphere. More than 100 high-precision radiocarbon dates show that deposits containing artifacts and coprolites ranging in age from 12,450 to 2295 (14)C years ago are well stratified. Western Stemmed projectile points were recovered in deposits dated to 11,070 to 11,340 (14)C years ago, a time contemporaneous with or preceding the Clovis technology. There is no evidence of diagnostic Clovis technology at the site. These two distinct technologies were parallel developments, not the product of a unilinear technological evolution. "Blind testing" analysis of coprolites by an independent laboratory confirms the presence of human DNA in specimens of pre-Clovis age. The colonization of the Americas involved multiple technologically divergent, and possibly genetically divergent, founding groups.