![]() ![]() Summer temperatures can exceed 37 ° C and violent thunderstorms create floods in late summer. In this area, the temperate seasons are spring (April-May) and autumn (mid-September-October) when the average maximum temperatures during the day vary between 15 ° C and 26 ° C and the minimum between 0 ° C and 10 ° C. The Arches National Park is characterized by a climate of the high-altitude desert region with high temperature variations, which can even exceed 20 ° C per day. Many of these shattered, others more resistant survived despite the missing sections. The atmospheric agents then attacked these fins, eroding the rock. The wind subsequently cleared this debris leaving fins exposed, thin isolated walls of sandstone. The ice formed in the cracks, expanding and pressing on the rock, caused it to explode into fragments. Then the water seeped through the surface cracks, joints and cavities. The major formations today are the salmon-colored Entrada Sandstone whose sandstone makes up most of the arches, and the pale yellow Navajo Sandstone. The displacement of the saline subsoil has shaped the surface and erosion has uncovered the younger rock layers. Subsequently the deep cracks in the earth made the surface even more unstable, leading to the formation of faults that contributed to the development of the arches (including the Landscape Arch, the Delicate Arch and the Double Arch). The salt under pressure is not stable and the salt bed, subjected to the enormous pressure of the debris above it, shifted, liquefied and repositioned itself pushing the overlying rock layers upwards (like domes) and entire sections sank as if cavity. The debris was compressed and turned into rock, reaching a thickness of over 1.5 km. For millions of years the remnants of floods, winds and oceans that formed and disappeared covered this formation. ![]() It is an area that reaches a thickness of several hundred meters and which was formed by deposit more than 300 million years ago when a sea submerged the region and probably evaporated. this park was originally designated as a national monument and then converted to a national park on November 12, 1971.Īrches National Park is located on an underground salt bed called the Paradox Basin, responsible for the formation of arches, spirals, balanced rocks, sandstone fins and eroded monoliths. This park was established by Act of Congress on 12-04-1929 and is managed like other parks in the United States by the National Park Service.Īrches National Park is located near Moab, Utah and at an altitude that varies between 1723 m and 1245 m. Arches National Park, whose WDPA Code is: 996 is a United States park located in the State of Utah, with a land area of 30,900 Ha. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |