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Superior Shoal
The Superior Shoal is a geologic shoal of approximately located north of Copper Harbor, Michigan in the middle of Lake Superior, the highest point of which lies only below the lake's surface. The shoal is a hump of Keweenawan basaltic lava flows with ophitic interiors and amygdaloidal tops in an otherwise deep part of the lake, and though fishermen had known of its existence for generations it was only officially charted in 1929 by the United States Lake Survey. It has been theorized that the World War I French minesweepers ''Inkerman'' and ''Cerisoles'', which disappeared during their maiden voyage on Lake Superior in mid-November 1918, may have run aground on this shoal and some have theorized that it may have been to blame for both the disappearance of the " Flying Dutchman of the Great Lakes" on November 21, 1902 and the sinking of the "Titanic of the Great Lakes" on November 10, 1975 (the '' SS Bannockburn'' and SS ''Edmund Fitzgerald'', respectively). It is one of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Superior Shoal Ridges
Superior may refer to: * Superior (hierarchy), something which is higher in a hierarchical structure of any kind Places *Superior (proposed U.S. state), an unsuccessful proposal for the Upper Peninsula of Michigan to form a separate state *Lake Superior, the largest of the North American Great Lakes, Canada, United States United Kingdom * Rickinghall Superior, England United States *Superior, Arizona * Superior, Colorado *Superior, Indiana * Superior, Iowa *Superior Township, Chippewa County, Michigan * Superior Township, Washtenaw County, Michigan * Superior, Montana * Superior, Nebraska *Superior, West Virginia *Superior, Wisconsin, a city * Superior (town), Wisconsin, a town adjacent to the city *Superior (village), Wisconsin, a village adjacent to the city * Superior, Wyoming *Superior (RTA Rapid Transit station), a station on the RTA Red Line in Cleveland, Ohio *Superior Bay, a bay between Minnesota and Wisconsin *Superior Falls, a waterfall between Michigan and Wisconsi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French Minesweepers Inkerman And Cerisoles
''Inkerman'' and ''Cerisoles'' were two French minesweepers named after major battles fought during the Crimean War and Italian war, and which vanished on their maiden voyage in a storm on Lake Superior in 24 November 1918. No trace of the two vessels has ever been found. 76 French sailors and two Canadian captains disappeared along with the minesweepers. ''Inkerman'' and ''Cerisoles'' are the last warships to disappear on the Great Lakes, and their sinkings caused the largest loss of life of any Lake Superior shipwreck. Vessel specifications ''Inkerman'' and ''Cerisoles'' were s, designed to clear naval mines in the English Channel. Built at the Canada Car and Foundry Company in what was then known as Fort William, Ontario, the vessels were long, and displaced 630 tons. Their steel-framed wooden hulls were divided into four water-tight compartments. Each ship was fitted with twin screws and a single funnel, and had a top speed of about . Two deck guns, with a range of about , ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Huron
Lake Huron ( ) is one of the five Great Lakes of North America. Hydrology, Hydrologically, it comprises the easterly portion of Lake Michigan–Huron, having the same surface elevation as Lake Michigan, to which it is connected by the , Straits of Mackinac. It is shared on the north and east by the Canadian province of Ontario and on the south and west by the U.S. state of Michigan. The name of the lake is derived from early French explorers who named it for the Wyandot people, Huron people inhabiting the region. The Huronian glaciation was named from evidence collected from Lake Huron region. The northern parts of the lake include the North Channel (Ontario), North Channel and Georgian Bay. Saginaw Bay is located in the southwest corner of the lake. The main inlet is the St. Marys River (Michigan–Ontario), St. Marys River, and the main outlet is the St. Clair River. Geography By surface area, Lake Huron is the second-largest of the Great Lakes, with a surface area of — ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georgian Bay
Georgian Bay (french: Baie Georgienne) is a large bay of Lake Huron, in the Laurentia bioregion. It is located entirely within the borders of Ontario, Canada. The main body of the bay lies east of the Bruce Peninsula and Manitoulin Island. To its northwest is the North Channel. Georgian Bay is surrounded by (listed clockwise) the districts of Manitoulin, Sudbury, Parry Sound and Muskoka, as well as the more populous counties of Simcoe, Grey and Bruce. The Main Channel separates the Bruce Peninsula from Manitoulin Island and connects Georgian Bay to the rest of Lake Huron. The North Channel, located between Manitoulin Island and the Sudbury District, west of Killarney, was once a popular route for steamships and is now used by a variety of pleasure craft to travel to and from Georgian Bay. The shores and waterways of the Georgian Bay are the traditional domain of the Anishinaabeg First Nations peoples to the north and Huron-Petun (Wyandot) to the south. The bay was thus a ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isle Royale Fault
An isle is an island, land surrounded by water. The term is very common in British English. However, there is no clear agreement on what makes an island an isle or its difference, so they are considered synonyms. Isle may refer to: Geography * Isle (river), a river in France * Isle, Haute-Vienne, a commune of the Haute-Vienne ''département'' in France * Isle, Minnesota, a small city in the United States * River Isle, a river in England Arts, entertainment, and media * ''Interdisciplinary Studies in Literature and Environment'' (or ''ISLE''), a journal published by Oxford University Press for the Association for the Study of Literature and Environment *''The Isle'', 2017 film with Conleth Hill * ''The Isle'', a 2000 South Korean film directed by Kim Ki-duk * ''Isle'' (album) Other uses * International Society for the Linguistics of English (ISLE), a learned society of linguists See also * Aisle, a space for walking, e.g., in a church, classroom, theatre, supermarket, etc. * Isl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SS Edmund Fitzgerald
SS ''Edmund Fitzgerald'' was an American Great Lakes freighter that sank in Lake Superior during a storm on November 10, 1975, with the loss of the entire crew of 29 men. When launched on June 7, 1958, she was the largest ship on North America's Great Lakes, and she remains the largest to have sunk there. She was located in deep water on November 14, 1975, by a U.S. Navy aircraft detecting magnetic anomalies, and found soon afterwards to be in two large pieces. For 17 years, ''Edmund Fitzgerald'' carried taconite iron ore from mines near Duluth, Minnesota, to iron works in Detroit, Michigan; Toledo, Ohio; and other Great Lakes ports. As a workhorse, she set seasonal haul records six times, often breaking her own record. Captain Peter Pulcer was known for piping music day or night over the ship's intercom while passing through the St. Clair and Detroit rivers (between lakes Huron and Erie), and entertaining spectators at the Soo Locks (between Lakes Superior and Huron) w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SS Bannockburn
The steamship ''Bannockburn'' was a Canadian registered steel-hulled freighter which disappeared on Lake Superior in snowy weather on November 21, 1902. She was sighted by the captain of a passing vessel, the SS ''Algonquin'', around noon of that day but minutes later disappeared. The wreck of the ship has never been found, with the exception of an oar and a life preserver, and no bodies were ever recovered. Within a year of her disappearance she acquired a reputation as a ghost ship and became known as The Flying Dutchman of the Great Lakes. History of the ship prior to sinking The ''Bannockburn'' had technically sunk once before, on the morning of October 15, 1897: under Captain John Irving, laden with grain and destined for Kingston, Ontario from Chicago, Illinois, she had struck the wing wall of Lock No. 17 of Welland Canal and sprung a leak sending her to the bottom of the shallow canal where she took on nine feet of water before coming to rest. However, there were no d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flying Dutchman
The ''Flying Dutchman'' ( nl, De Vliegende Hollander) is a legendary ghost ship, allegedly never able to make port, but doomed to sail the seven seas forever. The myth is likely to have originated from the 17th-century Golden Age of the Dutch East India Company (VOC) and of Dutch maritime power. The oldest known extant version of the legend dates from the late 18th century. According to the legend, if hailed by another ship, the crew of the ''Flying Dutchman'' might try to send messages to land, or to people long dead. Reported sightings in the 19th and 20th centuries claimed that the ship glowed with a ghostly light. In ocean lore, the sight of this phantom ship functions as a portent of doom. It was commonly believed that the ''Flying Dutchman'' was a fluyt. Origins The first print reference to the ship appears in ''Travels in various part of Europe, Asia and Africa during a series of thirty years and upward'' (1790) by John MacDonald: The next literary reference ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Lake Survey
The United States Lake Survey (USLS) was a hydrographic survey for the Great Lakes, New York Barge Canal, Lake Champlain and the Boundary Waters of the Canada–United States border between Minnesota and Ontario. The Survey's activities began on 31 March 1841, with the goal of surveying the Great Lakes. The Lake Survey was created within the United States Army Topographical Engineers (later the United States Army Corps of Engineers). Like the Commerce Department's Coast and Geodetic Survey, the Lake Survey had responsibility for the preparation and publication of nautical charts and other navigational aids. By 1882, the Survey had completed the original Congressional mandate, producing 76 charts, then disbanded. By 1901, the original survey and charting products required revision. The Lake Survey was reconstituted and its mission expanded. In addition to traditional survey, charting, and navigation information responsibilities, the Lake Survey was also responsible for studies on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shoal
In oceanography, geomorphology, and geoscience, a shoal is a natural submerged ridge, bank, or bar that consists of, or is covered by, sand or other unconsolidated material and rises from the bed of a body of water to near the surface. It often refers to those submerged ridges, banks, or bars that rise near enough to the surface of a body of water as to constitute a danger to navigation. Shoals are also known as sandbanks, sandbars, or gravelbars. Two or more shoals that are either separated by shared troughs or interconnected by past or present sedimentary and hydrographic processes are referred to as a shoal complex.Neuendorf, K.K.E., J.P. Mehl Jr., and J.A. Jackson, eds. (2005) ''Glossary of Geology'' (5th ed.). Alexandria, Virginia, American Geological Institute. 779 pp. The term ''shoal'' is also used in a number of ways that can be either similar or quite different from how it is used in geologic, geomorphic, and oceanographic literature. Sometimes, this term refer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amygdule
Amygdules or amygdales () form when the vesicles (pores from gas bubbles in lava) of a volcanic rock or other extrusive igneous rock are infilled with a secondary mineral, such as calcite, quartz, chlorite, or one of the zeolite Zeolites are microporous, crystalline aluminosilicate materials commonly used as commercial adsorbents and catalysts. They mainly consist of silicon, aluminium, oxygen, and have the general formula ･y where is either a metal ion or H+. These pos ...s. Amygdules usually form after the rock has been emplaced, and are often associated with low-temperature alteration. Amygdules may often be concentrically zoned. Rocks containing amygdules can be described as ''amygdaloidal''. The word is derived from the Latin word ''amygdala'', meaning "almond tree", and the Greek word αμυγδαλή, meaning "almond"reflecting the typical shape of an infilled vesicle. ''Amygdule'' is more common in American usage, while ''amygdale'' is more common in British usage. S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ophitic Texture
Poikilitic texture refers to igneous rocks where large later-formed less perfect crystals ('oikocrysts') surround smaller early-formed idiomorphic crystals ('chadacrysts') of other minerals. A poikilitic texture is most easily observed in petrographic thin sections. In some rocks there seems to be little tendency for the minerals to envelop one another. This is true of many gabbros, aplites and granites. The grains then lie side by side, with the faces of the latter moulded on or adapted to the more perfect crystalline outlines of the earlier. Ophitic A variety of poikilitic texture, known as ophitic texture, is where laths of plagioclase are enclosed in pyroxene, olivine or other minerals. It is very characteristic of many diabases, in which large crystals of augite enclose smaller laths of plagioclase feldspar. Biotite and hornblende frequently enclose feldspar ophitically; less commonly iron oxides and sphene do so. In peridotites the "lustre-mottled" structure arises fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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