This article is about the series of mesas and buttes in Oklahoma. For other uses, see Glass Mountain.
The Glass Mountains (also known as Gloss Mountains or Gloss Hills) are not actually mountains, but a series of mesas and buttes that are part of the Blaine Escarpment that extends from the Permianred beds of northwestern Oklahoma in Major County.[a] The Glass Mountains rise 150 feet (46 m) to 200 feet (61 m) above the surface of the plains, and the highest elevation in the formation is about 1,600 feet (490 m) above sea level. The Glass Mountains stretch west along U.S. Route 412 from Orienta south of the Cimarron River.[3] The name comes from the sparkling selenite crystals on the slopes and tops of the mesas.[b]
Glass Mountains seen from the top of a mesa at Glass Mountains State Park (2007)Glass Mountain, capped with massive gypsum, Major County, Oklahoma. (USGS photo by George Irving Adams, 1900)[1]
During the Quaternary Period, the most recent one million years, Pleistocene terraces were laid down along the major rivers in this area of the United States, with Holocene alluvium that are at least 100 feet (30 m) thick and contain sand, gravel, silt, clay and volcanic ash.[2]
The next layer was formed during the Permian Period, which occurred 230 to 270 million years ago. This consists of red sandstone and shale which is 1,000 feet (300 m) to 4,500 feet (1,400 m) thick, with gypsum on the outcroppings. The Permian "redbeds" are subdivided into the Cimarronian Series (2850 feet) at the base, overlain by the Custerian Series (400 feet, top eroded). Deposits of Flowerpot shale (180 feet (55 m) to 430 feet (130 m)) that consists mainly of red-brown illitic-chloritic shale, are found at this area.[2]
Historyedit
The first American explorers referred to this feature as the "Shining Mountains," when they saw the formation in 1821.[3] The name Glass Mountains has been attributed to an explorer named Thomas James.[5] James visited this area during 1821, while on a trading expedition along the Cimarron River.[6] In 1875, a transcription error by a mapmaker resulted in the name Gloss Mountains which is still a somewhat common name for the mountains.[7]
The region became part of the Cherokee Outlet during the 19th Century. In 1891, botanist George Walter Stevens, started collecting specimens in the Glass Mountains domain for his dissertation. The University of Oklahoma Bebb Herbarium holds 4,500 samples that Stevens collected statewide. Two cacti he may have collected in the Glass Mountains area are Echinocereus caespitosus and Opuntia phaecantha.[3]
State parkedit
The state of Oklahoma operates the 640 acres (260 ha) Glass Mountain State Park, 6 miles (9.7 km) west of Orienta on a mesa along Highway 412.[3] The park allows climbers to hike to the top of the mesa via a path and stairs. Picnic tables and an informational kiosk have been installed, and a pond known as Rattlesnake Lake is nearby.[8]
Notesedit
^ Glass Mountains is the "official name", but local residents still use the name Gloss Mountains.[2]
^Selenite is a form of the mineral gypsum, which is composed of calcium silicate (CaSO4), also known as isinglass.[4]
Referencesedit
^Adams, George Irving. 1904. Gypsum deposits in the United States. U.S. Geological Survey, Bulletin 223, 129 pp. (Plate 15-A)
glass, mountains, this, article, about, series, mesas, buttes, oklahoma, other, uses, glass, mountain, also, known, gloss, mountains, gloss, hills, actually, mountains, series, mesas, buttes, that, part, blaine, escarpment, that, extends, from, permian, beds, . This article is about the series of mesas and buttes in Oklahoma For other uses see Glass Mountain The Glass Mountains also known as Gloss Mountains or Gloss Hills are not actually mountains but a series of mesas and buttes that are part of the Blaine Escarpment that extends from the Permian red beds of northwestern Oklahoma in Major County a The Glass Mountains rise 150 feet 46 m to 200 feet 61 m above the surface of the plains and the highest elevation in the formation is about 1 600 feet 490 m above sea level The Glass Mountains stretch west along U S Route 412 from Orienta south of the Cimarron River 3 The name comes from the sparkling selenite crystals on the slopes and tops of the mesas b Glass Mountains seen from the top of a mesa at Glass Mountains State Park 2007 Glass Mountain capped with massive gypsum Major County Oklahoma USGS photo by George Irving Adams 1900 1 Contents 1 Geology 2 History 3 State park 4 Notes 5 References 6 External links 7 See alsoGeology editDuring the Quaternary Period the most recent one million years Pleistocene terraces were laid down along the major rivers in this area of the United States with Holocene alluvium that are at least 100 feet 30 m thick and contain sand gravel silt clay and volcanic ash 2 The next layer was formed during the Permian Period which occurred 230 to 270 million years ago This consists of red sandstone and shale which is 1 000 feet 300 m to 4 500 feet 1 400 m thick with gypsum on the outcroppings The Permian redbeds are subdivided into the Cimarronian Series 2850 feet at the base overlain by the Custerian Series 400 feet top eroded Deposits of Flowerpot shale 180 feet 55 m to 430 feet 130 m that consists mainly of red brown illitic chloritic shale are found at this area 2 History editThe first American explorers referred to this feature as the Shining Mountains when they saw the formation in 1821 3 The name Glass Mountains has been attributed to an explorer named Thomas James 5 James visited this area during 1821 while on a trading expedition along the Cimarron River 6 In 1875 a transcription error by a mapmaker resulted in the name Gloss Mountains which is still a somewhat common name for the mountains 7 The region became part of the Cherokee Outlet during the 19th Century In 1891 botanist George Walter Stevens started collecting specimens in the Glass Mountains domain for his dissertation The University of Oklahoma Bebb Herbarium holds 4 500 samples that Stevens collected statewide Two cacti he may have collected in the Glass Mountains area are Echinocereus caespitosus and Opuntia phaecantha 3 State park editThe state of Oklahoma operates the 640 acres 260 ha Glass Mountain State Park 6 miles 9 7 km west of Orienta on a mesa along Highway 412 3 The park allows climbers to hike to the top of the mesa via a path and stairs Picnic tables and an informational kiosk have been installed and a pond known as Rattlesnake Lake is nearby 8 Notes edit Glass Mountains is the official name but local residents still use the name Gloss Mountains 2 Selenite is a form of the mineral gypsum which is composed of calcium silicate CaSO4 also known as isinglass 4 References edit Adams George Irving 1904 Gypsum deposits in the United States U S Geological Survey Bulletin 223 129 pp Plate 15 A a b c http www okmajordev org gloss mountain state park html gt Major County Economic Development Corporation Accessed February 24 2016 a b c d McPhail Melanie L and Richard A Marston Encyclopedia of Oklahoma History and Culture Glass Mountains Retrieved March 5 2015 Glass Mountains Oklahoma Geocaching blog Accessed February 22 206 Benjamin Propelka Scenic USA Oklahoma Gloss Mountains State Park 2012 Accessed February 22 2016 Thomas Phillip Drennan James Thomas 1782 1847 Encyclopedia of Oklahoma History and Culture Accessed February 22 2016 Burchardt Bill 1970 The Glass Mountains Our Treasure in Trust Oklahoma Today 21 1 29 38 Zane Matt If You re From Oklahoma These Mountains Will Make Your Jaw Drop January 18 2016 Accessed February 24 2016External links editEncyclopedia of Oklahoma History and Culture Glass Mountains Oklahoma Digital Maps Digital Collections of Oklahoma and Indian TerritorySee also editGloss Mountain State Park 36 21 13 N 98 35 05 W 36 353646 N 98 584805 W 36 353646 98 584805 Retrieved from https en wikipedia org w index php title Glass Mountains amp oldid 1149379987, wikipedia, wiki, book, books, library,
