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Anikovik River
Anikovik River (alternate Anakovik) is a waterway in the U.S. state of Alaska. It heads in the York Mountains about from the Bering Sea. As it leaves the mountains, it has a westerly course, but bending sharply to the south, it flows in that direction to the sea. It has a broad, flat flood plain, from to in width. In the upper part of its course, the river flows in greenstones, but below its bend, to the south, it cuts phyllites and slates. A rough estimate of the fall of river makes it about per mile. Buhner Creek joins Anakovik River about above the mouth of Deer Creek. It is situated about east of Cape Prince of Wales and is long. Through the greater part of its length, it flows across the York Plateau, in which it has cut a comparatively broad valley. For several miles above its mouth, the valley and river bed contain gravels several feet deep and wide. In 1900, the whole of this river was regarded as gold-placer ground, but eventually, all the workings were abandoned ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waterway
A waterway is any navigable body of water. Broad distinctions are useful to avoid ambiguity, and disambiguation will be of varying importance depending on the nuance of the equivalent word in other languages. A first distinction is necessary between maritime shipping routes and waterways used by inland water craft. Maritime shipping routes cross oceans and seas, and some lakes, where navigability is assumed, and no engineering is required, except to provide the draft for deep-sea shipping to approach seaports (channels), or to provide a short cut across an isthmus; this is the function of ship canals. Dredged channels in the sea are not usually described as waterways. There is an exception to this initial distinction, essentially for legal purposes, see under international waters. Where seaports are located inland, they are approached through a waterway that could be termed "inland" but in practice is generally referred to as a "maritime waterway" (examples Seine Maritime, Loir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alaska
Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S., it borders the Canadian province of British Columbia and the Yukon territory to the east; it also shares a maritime border with the Russian Federation's Chukotka Autonomous Okrug to the west, just across the Bering Strait. To the north are the Chukchi and Beaufort Seas of the Arctic Ocean, while the Pacific Ocean lies to the south and southwest. Alaska is by far the largest U.S. state by area, comprising more total area than the next three largest states (Texas, California, and Montana) combined. It represents the seventh-largest subnational division in the world. It is the third-least populous and the most sparsely populated state, but by far the continent's most populous territory located mostly north of the 60th parallel, with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
York Mountains
York Mountains are located on the Seward Peninsula in the U.S. state of Alaska. They extend inland from the Bering Sea to the rocky cape of the same name. On the seaward sides, the streams have incised canyon-like valleys. Eastward, the York Mountains are extended by the highlands lying north of Port Clarence Port Clarence is a small village now within the borough of Stockton-on-Tees and ceremonial county of County Durham, England. It is situated on the north bank of the River Tees, and hosts the northern end of the Middlesbrough Transporter Bri .... Their western flanks fall off rather abruptly to the York PIateau. The general aspect of these mountains is rugged. The York Mountains and several other highland masses form isolated groups in the northern half of the peninsula, while in the southern half of the peninsula, the Kigluaik, Bendeleben, and Darby mountains form a broken range along a crescentic axis. References * * Landforms of Nome Census Area, Alaska ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bering Sea
The Bering Sea (, ; rus, Бе́рингово мо́ре, r=Béringovo móre) is a marginal sea of the Northern Pacific Ocean. It forms, along with the Bering Strait, the divide between the two largest landmasses on Earth: Eurasia and The Americas. It comprises a deep water basin, which then rises through a narrow slope into the shallower water above the continental shelf, continental shelves. The Bering Sea is named for Vitus Bering, a Denmark, Danish navigator in Russian service, who, in 1728, was the first European to systematically explore it, sailing from the Pacific Ocean northward to the Arctic Ocean. The Bering Sea is separated from the Gulf of Alaska by the Alaska Peninsula. It covers over and is bordered on the east and northeast by Alaska, on the west by the Russian Far East and the Kamchatka Peninsula, on the south by the Alaska Peninsula and the Aleutian Islands and on the far north by the Bering Strait, which connects the Bering Sea to the Arctic Ocean's Chukchi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phyllite
Phyllite ( ) is a type of foliated metamorphic rock created from slate that is further metamorphosed so that very fine grained white mica achieves a preferred orientation.Stephen Marshak ''Essentials of Geology'', 3rd ed. It is primarily composed of quartz, sericite mica, and chlorite. Phyllite has fine-grained mica flakes, whereas slate has extremely fine mica flakes, and schist has large mica flakes, all mica flakes of which have achieved a preferred orientation. Among foliated metamorphic rocks, it represents a gradation in the degree of metamorphism between slate and schist. The minute crystals of graphite, sericite, or chlorite, or the translucent fine-grained white mica, impart a silky, sometimes golden sheen to the surfaces of cleavage, called "phyllitic luster". The word comes from the Greek ''phyllon'', meaning "leaf". The protolith (or parent rock) for phyllite is shale or pelite, or slate, which in turn came from a shale protolith. Its constituent platy minerals ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slate
Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism. It is the finest grained foliated metamorphic rock. Foliation may not correspond to the original sedimentary layering, but instead is in planes perpendicular to the direction of metamorphic compression. The foliation in slate is called "slaty cleavage". It is caused by strong compression causing fine grained clay flakes to regrow in planes perpendicular to the compression. When expertly "cut" by striking parallel to the foliation, with a specialized tool in the quarry, many slates will display a property called fissility, forming smooth flat sheets of stone which have long been used for roofing, floor tiles, and other purposes. Slate is frequently grey in color, especially when seen, en masse, covering roofs. However, slate occurs in a variety of colors even from a single locality; for ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cape Prince Of Wales
Cape Prince of Wales (Russian: Мыс Принца Уэльского) () is the westernmost mainland point of the Americas. It was named in 1778 by Captain James Cook of the British Royal Navy, presumably for the Prince of Wales at the time, George Augustus Frederick. Discovered (for Europeans) in 1732, by an expedition led by a Russian military geodesist Mikhail Gvozdev in ''Sviatoi Gavriil'' (''St. Gabriel''); later, the cape was named by Vitus Bering for Gvozdev as Mys Gvozdeva (Cape Gvozdev). The Yupik name of the cape, published by G.Sarychev in 1826, was ''Nykhta''.Orth, Donald J. Dictionary of Alaska Place Names. Washington, DC: GPO, 1967. The current name has been finally approved by the U.S. Board on Geographic Names Decisions in 1944. Located on the Seward Peninsula of the U.S. state of Alaska near the settlement of Wales, Cape Prince of Wales is the terminus of the Continental Divide, marking the division between the Pacific and Arctic coasts, as well as marking the l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Placer Mining
Placer mining () is the mining of stream bed (Alluvium, alluvial) deposits for minerals. This may be done by open-pit mining, open-pit (also called open-cast mining) or by various surface excavating equipment or tunneling equipment. Placer mining is frequently used for precious metal deposits (particularly gold) and gemstones, both of which are often found in Alluvium, alluvial deposits—deposits of sand and gravel in modern or ancient stream beds, or occasionally glacial deposits. The metal or gemstones, having been moved by stream flow from an original source such as a vein, are typically only a minuscule portion of the total deposit. Since gems and heavy metals like gold are considerably denser than sand, they tend to accumulate at the base of placer deposits. Placer deposits can be as young as a few years old, such as the Canadian Queen Charlotte beach gold placer deposits, or billions of years old like the Elliot Lake uranium paleoplacer within the Huronian Supergroup i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cassiterite
Cassiterite is a tin oxide mineral, SnO2. It is generally opaque, but it is translucent in thin crystals. Its luster and multiple crystal faces produce a desirable gem. Cassiterite was the chief tin ore throughout ancient history and remains the most important source of tin today. Occurrence Most sources of cassiterite today are found in alluvial or placer deposits containing the weathering-resistant grains. The best sources of primary cassiterite are found in the tin mines of Bolivia, where it is found in crystallised hydrothermal veins. Rwanda has a nascent cassiterite mining industry. Fighting over cassiterite deposits (particularly in Walikale) is a major cause of the conflict waged in eastern parts of the Democratic Republic of the Congo. This has led to cassiterite being considered a conflict mineral. Cassiterite is a widespread minor constituent of igneous rocks. The Bolivian veins and the 4500 year old workings of Cornwall and Devon, England, are concentrated in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetite
Magnetite is a mineral and one of the main iron ores, with the chemical formula Fe2+Fe3+2O4. It is one of the oxides of iron, and is ferrimagnetic; it is attracted to a magnet and can be magnetized to become a permanent magnet itself. With the exception of extremely rare native iron deposits, it is the most magnetic of all the naturally occurring minerals on Earth. Naturally magnetized pieces of magnetite, called lodestone, will attract small pieces of iron, which is how ancient peoples first discovered the property of magnetism. Magnetite is black or brownish-black with a metallic luster, has a Mohs hardness of 5–6 and leaves a black streak. Small grains of magnetite are very common in igneous and metamorphic rocks. The chemical IUPAC name is iron(II,III) oxide and the common chemical name is ''ferrous-ferric oxide''. Properties In addition to igneous rocks, magnetite also occurs in sedimentary rocks, including banded iron formations and in lake and marine sediments ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
York, Alaska
York was a mining settlement in the U.S. state of Alaska during the late 19th- and early 20th-century. The mining camp was located at the mouth of Anikovik River, at Cape York on the Seward Peninsula, about north-west of Nome and north-west of Port Clarence. Wales Wales ( cy, Cymru ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by England to the Wales–England border, east, the Irish Sea to the north and west, the Celtic Sea to the south west and the ..., the westernmost settlement on the mainland United States, is north-west of York at Cape Prince of Wales. In the spring of 1900, York promised to be a place of importance and a post office was established in April, but in the early fall, its population had been reduced to about 20–30. The settlement included a number of log cabins and half a dozen substantial frame buildings. It was a distributing point for the region to the north, but during the stormy months of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nome, Alaska
Nome (; ik, Sitŋasuaq, ) is a city in the Nome Census Area in the Unorganized Borough of Alaska, United States. The city is located on the southern Seward Peninsula coast on Norton Sound of the Bering Sea. It had a population of 3,699 recorded in the 2020 census, up from 3,598 in 2010. Nome was incorporated on April 9, 1901, and was once the most-populous city in Alaska. Nome lies within the region of the Bering Straits Native Corporation, which is headquartered in Nome. The city of Nome also claims to be home to the world's largest gold pan, although this claim has been disputed by the Canadian city of Quesnel, British Columbia. In the winter of 1925, a diphtheria epidemic raged among Alaska Natives in the Nome area. Fierce territory-wide blizzard conditions prevented the delivery of a life-saving diphtheria antitoxin serum by airplane from Anchorage. A relay of dog sled teams was organized to deliver the serum. Today, the Iditarod Dog Sled Race follows the same route they ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
