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These two obsidian flakes were recovered from the Grassroots site, an Early Ceramic period site in Sherman County. In 2005, they analyzed using x-ray florescence (XRF) testing, an elemental analysis that matches the composition of the artifact to the composition of known sources. One piece was determined to be Valles Rhyolite from the Cerro del Medio member and the other to be Cerro Toledo Rhyolite from the Obsidian Ridge member, both places found in the Jemez Mountains in New Mexico. Thus XRF studies help archeologists to learn about ancient trade patterns.
Date: 1-1000 CE
Item Number: 312252
Call Number: 14SN307-2; 14SN307-9
KSHS Identifier: DaRT ID: 312252
Collections - Archeology
Objects and Artifacts - Archeological Artifacts
Objects and Artifacts - Archeological Artifacts - Artifact Class - Chipped Stone
Objects and Artifacts - Archeological Artifacts - Artifact Type - Debitage
Objects and Artifacts - Archeological Artifacts - Material/Stone Type - Obsidian
People - American Indians
People - American Indians - Prehistoric Cultures
Places - Counties - Sherman
Thematic Time Period - Early Peoples, 10000 BCE - 1820 CE
Thematic Time Period - Early Peoples, 10000 BCE - 1820 CE - Early Ceramic, 1 - 1000 CE
http://www.kansasmemory.org/item/312252