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Basalt columns seen on Porto Santo Island, Portugal. Columnar jointing of volcanic rocks exists in many places on Earth. Perhaps the most famous basalt lava flow in the world is the Giant's Causeway in Northern Ireland, in which the vertical joints form polygonal columns and give the impression of having been artificially constructed.
Basalt is a home rule town located in Eagle and Pitkin counties, Colorado, United States. [1] The town population was 3,984 at the 2020 United States Census with 2,917 residing in Eagle County and 1,067 residing in Pitkin County. [5] Basalt is a part of the Edwards-Glenwood Springs, CO Combined Statistical Area.
The Colorado Mineral Belt, stretching from the San Juan Mountains in the southwest to Boulder and Central City on the front range, contains most of the historic gold and silver mining districts of Colorado. Sagebrush Shrubland is typical of Northwestern Colorado. This ecosystem dominates here in Wolf Creek Wildlife Management Area, near ...
The Flat Tops is a mountain range located in Colorado within the Routt and White River National Forests. [1] Much of the range is within the boundary of the Flat Tops Wilderness Area. While there are notable peaks in the Flat Tops, the dominant feature of the range is the high plateau from which the peaks arise.
This list of prehistoric sites in the U.S. State of Colorado includes historical and archaeological sites of humans from their earliest times in Colorado to just before the Colorado historic period, which ranges from about 12,000 BC to AD 19th century. The Period is defined by the culture enjoyed at the time, from the earliest hunter-gatherers ...
The area devastated by the La Garita eruption is thought to have covered a significant portion of what is now Colorado. The deposit, known as the Fish Canyon Tuff, covered at least 11,000 sq mi (28,000 km 2). Its average thickness is 330 ft (100 m). The eruption might have formed a large-area ash-fall, but none has yet been identified. [5]
The Colorado Province took shape as a mobile belt—an area of thinner, orogeny related continental crust lacking the deep "keel" of rock, which stabilized the neighboring Wyoming Craton and other cratons like it. Throughout Colorado's geologic history, rocks have often been deformed, metamorphosed and overprinted, obscuring the ancient record.
Map showing approximate location of many current hotspots and the relationship to current tectonic plates and their boundaries and movement vectors The origins of the concept of hotspots lie in the work of J. Tuzo Wilson , who postulated in 1963 that the formation of the Hawaiian Islands resulted from the slow movement of a tectonic plate ...