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De Tour Passage Underwater Preserve
The DeTour Passage Underwater Preserve is a preservation area in the U.S. state of Michigan. Located in Lake Huron, it completely surrounds Drummond Island and includes all of DeTour Passage and adjacent sections of Lake Huron and the St. Mary's River. History With the discovery of significant hematite mines in northern Minnesota in the late 19th century, and the construction of steel mills from the late 19th century onward in and around Cleveland, Ohio, Detroit, Michigan, and Gary, Indiana, the DeTour Passage became an essential element in one of the most significant commodity supply pipelines of the Great Lakes. The DeTour Passage carries almost all of the commercial water traffic that is entering or leaving Lake Superior. In addition, quarries on Drummond Island are a rich source of commercial dolomite, limestone, and aggregates, and many vessels have called upon Drummond Island to pick up stone cargoes. For these reasons, the DeTour Passage Underwater Preserve is excep ... [...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] |
Lake Superior
Lake Superior in central North America is the largest freshwater lake in the world by surface areaThe Caspian Sea is the largest lake, but is saline, not freshwater. and the third-largest by volume, holding 10% of the world's surface fresh water. The northern and westernmost of the Great Lakes of North America, it straddles the Canada–United States border with the province of Ontario to the north and east, and the states of Minnesota to the northwest and Wisconsin and Michigan to the south. It drains into Lake Huron via St. Marys River, then through the lower Great Lakes to the St. Lawrence River and the Atlantic Ocean. Name The Ojibwe name for the lake is ''gichi-gami'' (in syllabics: , pronounced ''gitchi-gami'' or ''kitchi-gami'' in different dialects), meaning "great sea". Henry Wadsworth Longfellow wrote this name as "Gitche Gumee" in the poem ''The Song of Hiawatha'', as did Gordon Lightfoot in his song " The Wreck of the ''Edmund Fitzgerald''". According to oth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protected Areas Of Chippewa County, Michigan
Protection is any measure taken to guard a thing against damage caused by outside forces. Protection can be provided to physical objects, including organisms, to systems, and to intangible things like civil and political rights. Although the mechanisms for providing protection vary widely, the basic meaning of the term remains the same. This is illustrated by an explanation found in a manual on electrical wiring: Some kind of protection is a characteristic of all life, as living things have evolved at least some protective mechanisms to counter damaging environmental phenomena, such as ultraviolet light. Biological membranes such as bark on trees and skin on animals offer protection from various threats, with skin playing a key role in protecting organisms against pathogens and excessive water loss. Additional structures like scales and hair offer further protection from the elements and from predators, with some animals having features such as spines or camouflage servin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
False Detour Channel
The False Detour Channel is a short channel in Lake Huron, connecting the main body of the lake to the North Channel. Retrieved 2013-03-30 The Canada–United States border passes roughly through the middle of the channel, which separates Michigan's Drummond Island ( Chippewa County) from Ontario's Cockburn Island (Manitoulin District Manitoulin District is a district in Northeastern Ontario within the Canadian province of Ontario. It was created in 1888 from part of the Algoma District. The district seat is in Gore Bay. It comprises Manitoulin Island primarily, as well as a ...). References Bodies of water of Chippewa County, Michigan Landforms of Manitoulin District Canada–United States border Lake Huron Bodies of water of Michigan Channels of the United States Channels of Canada Bodies of water of Ontario {{ChippewaCountyMI-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DeTour Reef Light
The DeTour Reef Light is a non-profit-operated lighthouse marking the southern entrance of the DeTour Passage between the eastern end of Michigan's Upper Peninsula and Drummond Island. The light is an automated active aid to navigation. It marks the northern end of Lake Huron. The passage is used by almost all of the Great Lakes commercial freighter traffic moving to and from Lake Superior, with approximately 5,000 vessel movements annually. It is said to be "the gateway to Lake Superior." In addition, many recreational boaters use the passage. The Light is located in Lake Huron, three miles (5 km) south of the nearest town, DeTour Village, Michigan. Lighthouse history The southern entrance to DeTour Passage is made dangerous by a shoal, DeTour Reef. In order to enter or leave the passage, boats must thread past a shallow area no more than deep. In 1847 a lighthouse was located on shore at Point DeTour, Michigan to protect the DeTour Passage at the northwestern end of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wreck Diving
Wreck diving is recreational diving where the wreckage of ships, aircraft and other artificial structures are explored. Although most wreck dive sites are at shipwrecks, there is an increasing trend to scuttle retired ships to create artificial reef sites. Diving to crashed aircraft can also be considered wreck diving. The recreation of wreck diving makes no distinction as to how the vessel ended up on the bottom. Some wreck diving involves penetration of the wreckage, making a direct ascent to the surface impossible for a part of the dive. Reasons for diving wrecks A shipwreck may be attractive to divers for several reasons: * it serves as an artificial reef, which creates a habitat for many types of marine life * it often is a large structure with many interesting parts and machinery, which is not normally closely observable on working, floating vessels * it often has an interesting history * it presents new skill challenges for scuba divers to manage the risks associate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Navigation
Navigation is a field of study that focuses on the process of monitoring and controlling the movement of a craft or vehicle from one place to another.Bowditch, 2003:799. The field of navigation includes four general categories: land navigation, marine navigation, aeronautic navigation, and space navigation. It is also the term of art used for the specialized knowledge used by navigators to perform navigation tasks. All navigational techniques involve locating the navigator's position compared to known locations or patterns. Navigation, in a broader sense, can refer to any skill or study that involves the determination of position and direction. In this sense, navigation includes orienteering and pedestrian navigation. History In the European medieval period, navigation was considered part of the set of '' seven mechanical arts'', none of which were used for long voyages across open ocean. Polynesian navigation is probably the earliest form of open-ocean navigation; it was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Freighter
Lake freighters, or lakers, are bulk carrier vessels that operate on the Great Lakes of North America. These vessels are traditionally called boats, although classified as ships. Since the late 19th century, lakers have carried bulk cargoes of materials such as limestone, iron ore, grain, coal, or salt from the mines and fields of the upper Great Lakes to the populous industrial areas farther east. The 63 commercial ports handled 173 million tons of cargo in 2006. Because of winter ice on the lakes, the navigation season is not usually year-round. The Soo Locks and Welland Canal close from mid-January to late March, when most boats are laid up for maintenance. Crew members spend these months ashore. Depending on their application, lakers may also be referred to by their types, such as ''oreboats'' or ''ironboats'' (primarily for iron ore), ''straight deckers'' (no self-unloading gear), ''bulkers'' (carry bulk cargo), ''sternenders'' (all cabins aft), ''self unloaders'' (with sel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Construction Aggregate
Construction aggregate, or simply aggregate, is a broad category of coarse- to medium-grained particulate material used in construction, including sand, gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates. Aggregates are the most mined materials in the world. Aggregates are a component of composite materials such as concrete and asphalt; the aggregate serves as reinforcement to add strength to the overall composite material. Due to the relatively high hydraulic conductivity value as compared to most soils, aggregates are widely used in drainage applications such as foundation and French drains, septic drain fields, retaining wall drains, and roadside edge drains. Aggregates are also used as base material under foundations, roads, and railroads. In other words, aggregates are used as a stable foundation or road/rail base with predictable, uniform properties (e.g. to help prevent differential settling under the road or building), or as a low-cost exten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dolomite (rock)
Dolomite (also known as dolomite rock, dolostone or dolomitic rock) is a sedimentary carbonate rock that contains a high percentage of the mineral dolomite, CaMg(CO3)2. It occurs widely, often in association with limestone and evaporites, though it is less abundant than limestone and rare in Cenozoic rock beds (beds less than about 66 million years in age). The first geologist to distinguish dolomite rock from limestone was Belsazar Hacquet in 1778. Most dolomite was formed as a magnesium replacement of limestone or of lime mud before lithification. The geological process of conversion of calcite to dolomite is known as dolomitization and any intermediate product is known as dolomitic limestone. The "dolomite problem" refers to the vast worldwide depositions of dolomite in the past geologic record in contrast to the limited amounts of dolomite formed in modern times. Recent research has revealed sulfate-reducing bacteria living in anoxic conditions precipitate dolomite which ind ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gary, Indiana
Gary is a city in Lake County, Indiana, United States. The city has been historically dominated by major industrial activity and is home to U.S. Steel's Gary Works, the largest steel mill complex in North America. Gary is located along the southern shore of Lake Michigan about east of downtown Chicago, Illinois. The city is adjacent to the Indiana Dunes National Park, and is within the Chicago metropolitan area. Gary was named after lawyer Elbert Henry Gary, who was the founding chairman of the United States Steel Corporation. U.S. Steel had established the city as a company town to serve its steel mills. Although initially a very diverse city, after white flight in the 1970s, the city of Gary held the nation's highest percentage of African Americans for several decades. As of the 2020 census the city's population was 70,093, making it Indiana's ninth-largest city. Like other Rust Belt cities, Gary's once thriving steel industry has been significantly affected by th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chippewa County, Michigan
Chippewa County is a county in the Upper Peninsula of the U.S. state of Michigan. As of the 2020 Census, the population was 36,785. The county seat is Sault Ste. Marie. The county is named for the Ojibwe (Chippewa) people, and was set off and organized in 1826. Chippewa County comprises the Sault Ste. Marie, MI micropolitan statistical area. Geography According to the U.S. Census Bureau, the county has a total area of , of which is land and (42%) is water. It is the second-largest county in Michigan by land area and fifth-largest by total area. The Michigan Meridian runs through the eastern portion of the county. South of Nine Mile Road, M-129 (Meridian Road) overlays the meridian. In Sault Ste. Marie, Meridian Street north of 12th Avenue overlays the meridian. Adjacent counties & districts * Algoma District, Ontario, Canada (northeast) * Manitoulin District, Ontario, Canada (east) * Presque Isle County (southeast) * Mackinac County (south) * Luce County (west) Nat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
