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colorado geology

Barger Gulch Site

Added by yongli on 01/15/2020 - 15:28, last changed on 11/20/2022 - 22:21
There are few places in western North America richer in Paleo-Indian archaeology than Middle Park , the valley that forms the headwaters of the Colorado River in Grand County . Within Middle Park, the Barger Gulch area preserves an impressive amount of evidence from early humans, with sites dating...

Colorado Geology

Added by yongli on 06/24/2016 - 14:26, last changed on 11/02/2022 - 12:43
The Earth beneath the rugged mountains and serene plains of Colorado records an ancient saga. Broad tropical seas teemed with life, while reptiles roamed on shore. Continents converged and collided, building massive mountains, only to be torn apart by the movements of colossal tectonic plates...

Lyons Sandstone

Added by yongli on 01/15/2020 - 15:23, last changed on 11/02/2022 - 06:40
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 11/02/2022 - 12:43
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...

Rocky Mountains

Added by yongli on 06/08/2020 - 16:18, last changed on 11/02/2022 - 13:54
The Colorado Rocky Mountains are the highest portion of the 1,900-mile Rocky Mountain chain that stretches from northern British Columbia, Canada, to southern New Mexico. Colorado contains 78 of the 100 highest peaks in the chain, including the 30 tallest. The mountains are the state’s iconic...

Sand Wash Basin Tool Stone Sites

Added by yongli on 03/18/2020 - 22:34, last changed on 11/08/2022 - 11:40
Located northwest of Craig in Moffat County , the Sand Wash Basin is an area of Bridger Formation rock outcrops that prehistoric peoples mined extensively as a source for stones to make tools with. Bridger Formation chert is typically light to dark brown, though some of the chert in the basin is...

Shield Cave Archaeological Site

Added by yongli on 01/14/2020 - 15:07, last changed on 11/02/2022 - 22:39
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 11/02/2022 - 09:51
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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