Matches in DBpedia 2014 for { ?s ?p The Burro Mesa Archeological District encompasses a quarry in Big Bend National Park used by native Americans as a source of chert for chipped-stone tools. The quarry was used intermittently beginning in the paleoindian period starting about 12,000 to 13,000 years ago. The chert is found in a variety of colors and rests on top of tuff beds which themselves contain veins of kaolinite that was suitable for making claystone ornaments and beads.. }
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- Burro_Mesa_Archeological_District comment "The Burro Mesa Archeological District encompasses a quarry in Big Bend National Park used by native Americans as a source of chert for chipped-stone tools. The quarry was used intermittently beginning in the paleoindian period starting about 12,000 to 13,000 years ago. The chert is found in a variety of colors and rests on top of tuff beds which themselves contain veins of kaolinite that was suitable for making claystone ornaments and beads.".