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Table 5.16. Classification of material types into material type groups.

Type Frequency
Material Type Group Material Type Codes Included No. %
Nonlocal Materials
Morrison Formation 1020, 1022, 1040, 2201, 2202, 2205 276 1.08
Yellow-brown spotted chert             1072 506 1.98
Narbona Pass chert 1080 401 1.57
Zuni wood 1160 105 0.41
Obsidian 3500 341 1.34
Laguna chert 1430 82 0.32
Subtotal Nonlocal Materials 1,711 6.04
Local Materials
High surface chert 1050, 1051, 1053, 1054 3,233 12.67
Cherty silicified wood 1112, 1113 3,039 11.91
Splintery silicified wood 1109, 1110 1,516 5.94
Chalcedonic silicified wood 1140, 1142 7,138 27.97
Misc. chert/chalcedony 1000, 1010, 1030, 1042, 1060, 1070, 1090, 1200, 1220, 1232, 1300 4,714 18.47
Quartzite 4000, 4001 777 3.05
Sandstone 2102 497 1.95
Shale 8888, 2550 371 1.45
Mineral 5000, 5010, 5041, 5310, 5320 186 0.73
Others All other material types 2,334 9.15
Subtotal Local Materials 23,804 93.92
Total 25,515 100.0