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| | Summary of Citation |
 | | Recognized in cliffs in the valley of the Eagle River and on dip slopes on flank of Sawatch Range, Eagle Co, CO in Eagle basin where it is a unit about 185 ft thick beneath the Peerless formation. |
 | | Sawatch revised in that it is assigned to the newly named Horseshoe Mountain Group as the basal formation at Salida, Gunnison Co, CO in the Piceance basin; Colorado Springs, El Paso Co, CO in the Denver basin; and Fairplay, Park Co, CO in the South Park basin. |
 | | The new formation which occurs with the Sawatch in central CO in western Gunnison Co,, Piceance basin, Park Co, South Park basin, eastern Eagle, eastern Pitkin, southern Summit, Lake Co, and northern Chaffee Co, Eagle basin, was deposited concurrently with the Peerless Formation. |
| ngmdb.usgs.gov /Geolex/Refsmry/sumry_9988.html (1119 words) |
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