Obsidian Fracture Resulting from Forest Fire Exposure
Author(s): Anastasia Steffen
Year: 2023
Summary
This is an abstract from the "Fire-Cracked Rock: Research in Cooking and Noncooking Contexts" session, at the 88th annual meeting of the Society for American Archaeology.
Fire fractures in obsidian nodules and artifacts have been observed following several large forest fires at quarries, other archaeological sites, and geological deposits in the Jemez Mountains of north-central New Mexico. This presentation describes the characteristics of thermal fractures observed in this brittle material and discusses the heating contexts in which this fire effect occurs, including consideration of heating experiments conducted as part of the ArcBurn project.
Cite this Record
Obsidian Fracture Resulting from Forest Fire Exposure. Anastasia Steffen. Presented at The 88th Annual Meeting of the Society for American Archaeology. 2023 ( tDAR id: 473193)
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Keywords
Geographic Keywords
North America: Southwest United States
Spatial Coverage
min long: -124.365; min lat: 25.958 ; max long: -93.428; max lat: 41.902 ;
Record Identifiers
Abstract Id(s): 35890.0