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Fig. 1 Block A at the Debra L. Friedkin site.

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Presentation on theme: "Fig. 1 Block A at the Debra L. Friedkin site."— Presentation transcript:

1 Fig. 1 Block A at the Debra L. Friedkin site.
Block A at the Debra L. Friedkin site. (A) Map showing the location of the Debra L. Friedkin site along Buttermilk Creek. The geomorphic setting of the site is shown along with the location of the excavated areas. The red-colored area is Block A. The location of the four optically stimulated luminescence (OSL)–dated columns is indicated. Solid squares and rectangles indicate the location of trenches and excavation units. T-1, Terrace 1; T-2, Terrace 2. The inset map shows the location of the Friedkin site in Texas. (B) Map of Block A excavation area and the year each area was excavated. OSL sample locations are shown. Geological sections A-A′, B-B′, and C-C′ are indicated with dashed lines and correlate with Figs. 2 and 3. Modern topographic contours are shown with elevations in meters above datum (m AD). (C) Photograph of the floodplain sediments (north wall of excavation unit N1312 E1362). Late Archaic hearth feature occurs near the top of the section, and the complete lanceolate stemmed point (AM9875-2) dating ~15 ka ago is seen in the excavation unit at the base of the wall profile. Photo Credit: Michael Waters, Texas A&M University. Michael R. Waters et al. Sci Adv 2018;4:eaat4505 Copyright © 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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