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New Directions in the Search for the First Floridians$
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David K. Thulman and Ervan G. Garrison

Print publication date: 2019

Print ISBN-13: 9781683400738

Published to Florida Scholarship Online: January 2020

DOI: 10.5744/florida/9781683400738.001.0001

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PRINTED FROM FLORIDA SCHOLARSHIP ONLINE (www.florida.universitypressscholarship.com). (c) Copyright University Press of Florida, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in FLASO for personal use.date: 23 September 2021

Postdepositional Corrosions in Lithic Items Recovered from Submerged Marine Contexts

Postdepositional Corrosions in Lithic Items Recovered from Submerged Marine Contexts

Chapter:
(p.194) 11 Postdepositional Corrosions in Lithic Items Recovered from Submerged Marine Contexts
Source:
New Directions in the Search for the First Floridians
Author(s):

James S. Dunbar

Publisher:
University Press of Florida
DOI:10.5744/florida/9781683400738.003.0012

Both chemical and mechanical weathering can heavily alter lithic artifacts from prehistoric sites. One interesting finding in the Ray Hole Spring assemblage was the use of a so-called non-traditional tool stone (dolomitized arkosic rock) in place of chert. The Douglas Beach artifact (a lanceolate point) was also a chert object that, like the Ray Hole materials, was heavily corroded. This chapter describes the battery of instrumental techniques—SEM, XRF, XRD and EMPA—that the authors used and discusses the results of these analyses. The authors then propose a protocol for evaluating corroded lithics.

Keywords:   Corrosion, Lithics, Non-traditional tool stone, Dolomitized arkosic rock, Chert, Douglas Beach, Ray Hole Springs, SEM, XRD, XRF, EMPA

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