Intrasite Spatial Analysis at the Debra L. Friedkin Site, TX

Author(s): David Carlson; Michael Waters; Joshua Keene

Year: 2018


The Debra L. Friedkin site, located in central Texas along Buttermilk Creek, provides evidence of human occupation in Texas during the past 15 thousand years within a deposit approximately 1 meter thick. Excavation Block A consisted of 52 contiguous 1x1 m units excavated between 2006 and 2009. Excavations since the initial publication of the site include 14 units adjacent to the south end of the block and 32 units just northeast. Each 1x1 m unit was excavated in 2.5 cm levels. Currently we are analyzing the horizontal and vertical distribution of diagnostic artifacts and debitage to identify paleosurfaces across the excavation block. Four independent lines of evidence are being used. First, four OSL columns provide one basis for identifying contemporaneous layers across the blocks using Bayesian depositional analyses of each core. The slope of the modern surface and the basal bedrock surface provide a second line of evidence of the slope of the buried components. Third, the distribution of diagnostic artifact types, especially Clovis, Folsom/Midland, Golondrina, Angostura, and Ensor provides a way of identifying surfaces using robust linear regression models. Finally, analysis of debitage densities horizontally and vertically provides yet another approach to identification of paleosurfaces.

Cite this Record

Intrasite Spatial Analysis at the Debra L. Friedkin Site, TX. David Carlson, Michael Waters, Joshua Keene. Presented at The 82nd Annual Meeting of the Society for American Archaeology, Washington, DC. 2018 ( tDAR id: 443651)

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Abstract Id(s): 20452