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Flattop Butte

Added by yongli on 08/24/2016 - 15:52, last changed on 04/16/2020 - 09:10
Located northwest of Sterling , Flattop Butte is a rock outcrop that was used extensively by prehistoric peoples as a source of stone for tools. The butte has a Chadron Formation capstone that is the only major bedrock source of high-quality stone between central Kansas/Nebraska and the Rocky...

Lyons Sandstone

Added by yongli on 01/15/2020 - 15:23, last changed on 06/11/2020 - 13:24
Named for the Boulder County town whose historic quarries made it famous, the Lyons Sandstone formation is a Permian age rock layer in the foothills of the Front Range from the Wyoming border to south of Colorado Springs . It is the primary formation in the scenic red rock outcrops at Garden of the...

Prehistoric Stone Quarrying in Colorado

Added by yongli on 01/14/2020 - 14:37, last changed on 07/02/2020 - 01:07
From exquisitely flaked Folsom spear points to the spectacular cliff dwellings of Mesa Verde National Park , among the most visible vestiges of Colorado’s Native American history are those crafted from naturally available rock. Archaeologists and others have documented nearly 1,000 places across...

Shield Cave Archaeological Site

Added by yongli on 01/14/2020 - 15:07, last changed on 01/14/2020 - 15:07
Shield Cave is a large limestone cavern in Eagle County that contains painted rock art dating to the Historic period and deposits of the iron mineral pigment material used to make ochre-color paint. This site is one of hundreds of caverns that have developed in the Mississippian Period Leadville...

Trout Creek Archaeological Site

Added by yongli on 01/14/2020 - 15:13, last changed on 01/14/2020 - 15:13
Trout Creek in east Chaffee County is an extensive archaeological site exhibiting natural outcrops of colorful jaspers that were used for thousands of years as raw material for toolmaking by many different groups of Native Americans. It is one of the best-known toolstone sources not only in central...
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