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A mountain range or hill range is a series of mountains or hills arranged in a line and connected by high ground. A mountain system or mountain belt is a group of mountain ranges with similarity in form, structure, and alignment that have arisen from the same cause, usually an orogeny . [ 1 ]
The following is a list of rock types recognized by geologists.There is no agreed number of specific types of rock. Any unique combination of chemical composition, mineralogy, grain size, texture, or other distinguishing characteristics can describe a rock type.
Sedimentary cover of the Tatric unit is overridden by Mesozoic nappes. Nappes are large slabs of the Mesozoic carbonate rock with similar sedimentary sequence as present in the Tatric cover. There are two so-called Subtatric nappes: the lower called the Kížna nappe (or the Fatric) and the upper called Choč nappe (or the Hronic).
Schist (/ ˈ ʃ ɪ s t / SHIST) is a medium-grained metamorphic rock showing pronounced schistosity (named for the rock). This means that the rock is composed of mineral grains easily seen with a low-power hand lens , oriented in such a way that the rock is easily split into thin flakes or plates.
The Black Hills is an isolated mountain range rising from the Great Plains of North America in western South Dakota and extending into Wyoming, United States. [3] Black Elk Peak, which rises to 7,242 feet (2,207 m), is the range's highest summit. [4] The name of the range in Lakota is Pahá Sápa. [5] It encompasses the Black Hills National Forest.
The geology of the southwest includes old rocks, the 3.6 billion year old Morton Gneiss and the Paleoproterozoic Sioux Quartzite, overlain by the Cretaceous sedimentary sequence that includes the Dakota Sandstone, Niobrara Formation, and Pierre Shale, and is continuous across much of the western Midwest to the eastern slopes of the Rocky Mountains.
A major mountain range formed with the closing of the oceans, spanning thousands of kilometers across Pangaea. Known as the Variscan orogeny in Central Europe, the mountain building event left remnant highlands throughout Europe, northwestern Africa and North America. The Alps and the Bohemian Massif were affected by the orogeny.
Another name for physical geography. [5] piedmont. Also foothills. A geographic region of relatively low, gently rolling hills lying or formed at the base of a higher mountain range or other upland area; a transition zone characterized by gradual increases in elevation from plains or lowlands to