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Mount Glossopteris
The Ohio Range () is a mountain range in the Transantarctic Mountains of Antarctica. It is about 48 km (30 mi) long and 16 km (10 mi) wide, extending WSW-ENE from Eldridge Peak to Mirsky Ledge. The range forms the northeast end of the Horlick Mountains and consists primarily of a large snow-topped plateau with steep northern cliffs and several flat-topped ridges and mountains. The highest point is the summit of Mount Schopf (2990 m). The range was surveyed in 1958-59 by the USARP Horlick Mountains Traverse, and was investigated in 1960-61 and 1961-62 by geologists of the Institute of Polar Studies of The Ohio State University, for which the range is named. The central part of the range is occupied by the Buckeye Table, a plateau, 12 mi long and 2 to 5 mi wide. The feature is a high level snow surface with precipitous northern cliffs; the plateau surface merges gradually with the inland ice to the south. The name, a nickname of the state of Ohio and Oh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Range
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. Mountain ranges are formed by a variety of geological processes, but most of the significant ones on Earth are the result of plate tectonics. Mountain ranges are also found on many planetary mass objects in the Solar System and are likely a feature of most terrestrial planets. Mountain ranges are usually segmented by highlands or mountain passes and valleys. Individual mountains within the same mountain range do not necessarily have the same geologic structure or petrology. They may be a mix of different orogenic expressions and terranes, for example thrust sheets, uplifted blocks, fold mountains, and volcanic landforms resulting in a variety of rock types. Major ranges Most geolo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glossopteris
''Glossopteris'' tymology: from Ancient Greek γλῶσσα (glôssa, " tongue ") + πτερίς (pterís, " fern ")is the largest and best-known genus of the extinct Permian order of seed ferns known as Glossopteridales (also known as Arberiales, Ottokariales, or Dictyopteridiales). The genus ''Glossopteris'' refers only to leaves, within a framework of form genera used in paleobotany. (For likely reproductive organs see Glossopteridaceae.) Species of ''Glossopteris'' were the dominant trees of the middle- to high-latitude lowland vegetation across the supercontinent Gondwana during the Permian Period. ''Glossopteris'' fossils were critical in recognizing former connections between the various fragments of Gondwana: South America, Africa, India, Australia, New Zealand, and Antarctica. History The Glossopteridales arose in the Southern Hemisphere around the beginning of the Permian Period (), but became extinct during the end-Permian (Changhsingian) mass extinction. The putat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Urbanak Peak
The Ohio Range () is a mountain range in the Transantarctic Mountains of Antarctica. It is about 48 km (30 mi) long and 16 km (10 mi) wide, extending WSW-ENE from Eldridge Peak to Mirsky Ledge. The range forms the northeast end of the Horlick Mountains and consists primarily of a large snow-topped plateau with steep northern cliffs and several flat-topped ridges and mountains. The highest point is the summit of Mount Schopf (2990 m). The range was surveyed in 1958-59 by the USARP Horlick Mountains Traverse, and was investigated in 1960-61 and 1961-62 by geologists of the Institute of Polar Studies of The Ohio State University, for which the range is named. The central part of the range is occupied by the Buckeye Table, a plateau, 12 mi long and 2 to 5 mi wide. The feature is a high level snow surface with precipitous northern cliffs; the plateau surface merges gradually with the inland ice to the south. The name, a nickname of the state of Ohio and Oh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Schopf
The Ohio Range () is a mountain range in the Transantarctic Mountains of Antarctica. It is about 48 km (30 mi) long and 16 km (10 mi) wide, extending WSW-ENE from Eldridge Peak to Mirsky Ledge. The range forms the northeast end of the Horlick Mountains and consists primarily of a large snow-topped plateau with steep northern cliffs and several flat-topped ridges and mountains. The highest point is the summit of Mount Schopf (2990 m). The range was surveyed in 1958-59 by the USARP Horlick Mountains Traverse, and was investigated in 1960-61 and 1961-62 by geologists of the Institute of Polar Studies of The Ohio State University, for which the range is named. The central part of the range is occupied by the Buckeye Table, a plateau, 12 mi long and 2 to 5 mi wide. The feature is a high level snow surface with precipitous northern cliffs; the plateau surface merges gradually with the inland ice to the south. The name, a nickname of the state of Ohio and Oh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William E
William is a male given name of Germanic origin.Hanks, Hardcastle and Hodges, ''Oxford Dictionary of First Names'', Oxford University Press, 2nd edition, , p. 276. It became very popular in the English language after the Norman conquest of England in 1066,All Things William"Meaning & Origin of the Name"/ref> and remained so throughout the Middle Ages and into the modern era. It is sometimes abbreviated "Wm." Shortened familiar versions in English include Will, Wills, Willy, Willie, Bill, and Billy. A common Irish form is Liam. Scottish diminutives include Wull, Willie or Wullie (as in Oor Wullie or the play ''Douglas''). Female forms are Willa, Willemina, Wilma and Wilhelmina. Etymology William is related to the given name ''Wilhelm'' (cf. Proto-Germanic ᚹᛁᛚᛃᚨᚺᛖᛚᛗᚨᛉ, ''*Wiljahelmaz'' > German ''Wilhelm'' and Old Norse ᚢᛁᛚᛋᛅᚼᛅᛚᛘᛅᛋ, ''Vilhjálmr''). By regular sound changes, the native, inherited English form of the name should b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conglomerate (geology)
Conglomerate () is a clastic sedimentary rock that is composed of a substantial fraction of rounded to subangular gravel-size clasts. A conglomerate typically contains a matrix of finer-grained sediments, such as sand, silt, or clay, which fills the interstices between the clasts. The clasts and matrix are typically cemented by calcium carbonate, iron oxide, silica, or hardened clay. Conglomerates form by the consolidation and lithification of gravel. They can be found in sedimentary rock sequences of all ages but probably make up less than 1 percent by weight of all sedimentary rocks. In terms of origin and depositional mechanisms, they are closely related to sandstones and exhibit many of the same types of sedimentary structures, e.g., tabular and trough cross-bedding and graded bedding.Boggs, S. (2006) ''Principles of Sedimentology and Stratigraphy.'', 2nd ed. Prentice Hall, New York. 662 pp. Friedman, G.M. (2003) ''Classification of sediments and sedimentary rocks.'' In G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quartz
Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The atoms are linked in a continuous framework of SiO4 silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO2. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar. Quartz exists in two forms, the normal α-quartz and the high-temperature β-quartz, both of which are chiral. The transformation from α-quartz to β-quartz takes place abruptly at . Since the transformation is accompanied by a significant change in volume, it can easily induce microfracturing of ceramics or rocks passing through this temperature threshold. There are many different varieties of quartz, several of which are classified as gemstones. Since antiquity, varieties of quartz have been the most commonly used minerals in the making of jewelry and hardstone carvings, especially in Eurasia. Quartz is the mineral defining the val ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sandstone
Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicates) because they are the most resistant minerals to weathering processes at the Earth's surface. Like uncemented sand, sandstone may be any color due to impurities within the minerals, but the most common colors are tan, brown, yellow, red, grey, pink, white, and black. Since sandstone beds often form highly visible cliffs and other topographic features, certain colors of sandstone have been strongly identified with certain regions. Rock formations that are primarily composed of sandstone usually allow the percolation of water and other fluids and are porous enough to store large quantities, making them valuable aquifers and petroleum reservoirs. Quartz-bearing sandstone can be changed into quartzite through metamorphism, usually related to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quartz Pebble Hill
The Ohio Range () is a mountain range in the Transantarctic Mountains of Antarctica. It is about 48 km (30 mi) long and 16 km (10 mi) wide, extending WSW-ENE from Eldridge Peak to Mirsky Ledge. The range forms the northeast end of the Horlick Mountains and consists primarily of a large snow-topped plateau with steep northern cliffs and several flat-topped ridges and mountains. The highest point is the summit of Mount Schopf (2990 m). The range was surveyed in 1958-59 by the USARP Horlick Mountains Traverse, and was investigated in 1960-61 and 1961-62 by geologists of the Institute of Polar Studies of The Ohio State University, for which the range is named. The central part of the range is occupied by the Buckeye Table, a plateau, 12 mi long and 2 to 5 mi wide. The feature is a high level snow surface with precipitous northern cliffs; the plateau surface merges gradually with the inland ice to the south. The name, a nickname of the state of Ohio and Oh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mirsky Ledge
The Ohio Range () is a mountain range in the Transantarctic Mountains of Antarctica. It is about 48 km (30 mi) long and 16 km (10 mi) wide, extending WSW-ENE from Eldridge Peak to Mirsky Ledge. The range forms the northeast end of the Horlick Mountains and consists primarily of a large snow-topped plateau with steep northern cliffs and several flat-topped ridges and mountains. The highest point is the summit of Mount Schopf (2990 m). The range was surveyed in 1958-59 by the USARP Horlick Mountains Traverse, and was investigated in 1960-61 and 1961-62 by geologists of the Institute of Polar Studies of The Ohio State University, for which the range is named. The central part of the range is occupied by the Buckeye Table, a plateau, 12 mi long and 2 to 5 mi wide. The feature is a high level snow surface with precipitous northern cliffs; the plateau surface merges gradually with the inland ice to the south. The name, a nickname of the state of Ohio and Oh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Byrd Station
The Byrd Station is a former research station established by the United States during the International Geophysical Year by U.S. Navy Seabees during Operation Deep Freeze II in West Antarctica. History A joint Army, Navy, Air Force, and Marines operation supported an overland tractor train traverse that left out of Little America V in late 1956 to establish the station. The train was led by Army Major Merle Dawson and completed a traverse of over unexplored country in Marie Byrd Land to blaze a trail to a spot selected beforehand. The station consisted of a set of four prefabricated buildings and was erected in less than one month by U.S. Navy Seabees. It was commissioned on January 1, 1957. The original station ("Old Byrd") lasted about four years before it began to collapse under the snow. Construction of a second underground station in a nearby location began in 1960, and it was used until 1972. The Operation Deep Freeze activities were succeeded by "Operation Deep Freez ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frede Iversen
People from the United States of America are known as and refer to themselves as Americans. Different languages use different terms for citizens of the United States. All forms of English refer to US citizens as Americans, a term deriving from the United States of America, the country's official name. In the English context, it came to refer to inhabitants of British America, and then the United States. However, there is some linguistic ambiguity over this use due to the other senses of the word ''American'', which can also refer to people from the Americas in general. Other languages, including Japanese, and Russian, use cognates of American to refer to people from the United States, while others, like French, or particularly Spanish and Portuguese, primarily use terms derived from United States. There are various other local and colloquial names for Americans. The name America probably came from the Italian navigator Amerigo Vespucci. Development of the term ''American'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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