Narbona Pass chert

Narbona Pass chert comes from the Chuska Mountains of northwestern New Mexico. At Chaco Canyon it was the most common non-local stone during the Chacoan era, about A.D. 900 to 1150, carried in from a source about 75 km away. Catherine Cameron's study of the Chaco Project's chipped stone found something odd: the imported chert was used almost entirely for informal flake tools, while formal tools, mostly projectile points, were few, and many points were probably not made in the canyon. Quantities of Narbona Pass debitage were left in great houses, which supports the idea of communal gatherings. The paper's title calls the stone pink chert. A fuller description of its colour range and geology is missing from the sources opened here.

From the Chuska Mountains of northwestern New Mexico and northeastern Arizona. The opened source gives only its location and distance from Chaco Canyon (about 75 km); it does not describe the formation.