|
Keweenaw Peninsula
The Keweenaw Peninsula ( , sometimes locally ) is the northernmost part of Michigan's Upper Peninsula. It projects into Lake Superior and was the site of the first copper boom in the United States, leading to its moniker of "Copper Country." As of the 2000 census, its population was roughly 43,200. Its major industries are now logging and tourism, as well as jobs related to Michigan Technological University and Finlandia University. Geology The peninsula measures about 150 miles in length and about 50 miles in width at its base. The ancient lava flows of the Keweenaw Peninsula were produced during the Mesoproterozoic Era as a part of the Midcontinent Rift between 1.096 and 1.087 billion years ago. This volcanic activity produced the only strata on Earth where large-scale economically recoverable 97 percent pure native copper is found. Much of the native copper found in the Keweenaw comes in either the form of cavity fillings on lava flow surfaces, which has a ”lacy” cons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Breccia
Breccia () is a rock composed of large angular broken fragments of minerals or rocks cemented together by a fine-grained matrix. The word has its origins in the Italian language, in which it means "rubble". A breccia may have a variety of different origins, as indicated by the named types including sedimentary breccia, tectonic breccia, igneous breccia, impact breccia, and hydrothermal breccia. A megabreccia is a breccia composed of very large rock fragments, sometimes kilometers across, which can be formed by landslides, impact events, or caldera collapse. Types Breccia is composed of coarse rock fragments held together by cement or a fine-grained matrix. Like conglomerate, breccia contains at least 30 percent of gravel-sized particles (particles over 2mm in size), but it is distinguished from conglomerate because the rock fragments have sharp edges that have not been worn down. These indicate that the gravel was deposited very close to its source area, since otherwise th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brockway Mountain Drive
Brockway Mountain Drive is an scenic roadway just west of Copper Harbor in the Upper Peninsula of Michigan in the United States. Drivers can access the road from State Highway M-26 on either end near Eagle Harbor to the west or Copper Harbor to the east in the Keweenaw Peninsula. The drive runs along the ridge of Brockway Mountain on the Keweenaw Fault and climbs to above sea level, above the surface of Lake Superior. Several viewpoints along the route allow for panoramas of Copper Harbor, Lake Superior, and undeveloped woodland. On a clear day, Isle Royale is visible approximately in distance from the top of the mountain. Brockway Mountain was named for Daniel D. Brockway, one of the pioneer residents of the area. The road was constructed by the county road commission with funding through Depression-era work programs in 1933. It was briefly used as a connection for the parallel state highway after it opened. Since it opened, Brockway Mountain Drive has been recognized n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keweenaw Fault
The Keweenaw Fault is a reverse fault that bisects the Keweenaw Peninsula of the Upper Peninsula of Michigan. The fault thrusts lava flows of the Midcontinent Rift System onto sedimentary rocks of the Jacobsville Sandstone. The fault is part of the inversion of the Midcontinent Rift where a region that had previously undergone extension experienced significant contraction. This contraction occurred during the final stages of the Grenvillian orogeny. The Keweenaw Peninsula, itself, is the southeastern side of a large syncline beneath Lake Superior. The northwestern side forms Isle Royale. The fault is more than long and extends from the tip of the Keweenaw Peninsula in the northeast to a termination near the Michigan-Wisconsin border in the southeast. The fault is most likely younger than the Jacobsville Formation and the Devonian Period. A seismic event in 1906 claimed to be an earthquake has been attributed to a rock burst, as the area has been significantly mined. The Natural ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Trail
Water (chemical formula ) is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a solvent). It is vital for all known forms of life, despite not providing food, energy or organic micronutrients. Its chemical formula, H2O, indicates that each of its molecules contains one oxygen and two hydrogen atoms, connected by covalent bonds. The hydrogen atoms are attached to the oxygen atom at an angle of 104.45°. "Water" is also the name of the liquid state of H2O at standard temperature and pressure. A number of natural states of water exist. It forms precipitation in the form of rain and aerosols in the form of fog. Clouds consist of suspended droplets of water and ice, its solid state. When finely divided, crystalline ice may precipitate in the form of snow. The gaseous state of water is steam or water vapor. Water co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hancock, Michigan
Hancock is a city in Houghton County, Michigan, Houghton County in the U.S. state of Michigan. It is across the Keweenaw Waterway from the city of Houghton, Michigan, Houghton on the Keweenaw Peninsula. The population was 4,634 at the 2010 United States census, 2010 census. The Weather Channel has consistently ranked Hancock as the third-snowiest city in the U.S. Hancock was named after United States Founding Fathers, U.S. Founding Father John Hancock. History The story of Hancock began during the summers of 1847 and 1848, when a small group of Prospecting, prospectors laboring on a rugged hillside (later named Quincy Hill) discovered a sequence of prehistoric Ojibwe copper mining pits, stretching out for 100 feet along the local Amygdule, amygdaloid lode. Upon inspecting one, they realized that the Native Americans were able to take copper in small quantities through these pits. The discovery formed the basis upon which the Quincy Mining Company was created in October 1848, un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Douglass Houghton
Douglass Houghton (September 21, 1809 – October 13, 1845) was an American geologist and physician, primarily known for his exploration of the Keweenaw Peninsula of Michigan. It was the site of a copper boom and extensive copper mining beginning in the 19th century. He was appointed in 1839 as the first state geologist of Michigan, after it was admitted to the union, and served in that position for the rest of his life. Early life and education Douglass Houghton was born in Troy, New York, the son of Jacob Houghton, a lawyer and later a county judge, and Mary Lydia (Douglass). Raised in a close-knit, cultured home in Fredonia, New York, Douglass was a small person with a nervous, active temperament inclined toward the practical and scientific. He exhibited early his lifelong interest in the natural world. In spite of a slight speech impediment and facial scarring from a youthful experiment with gunpowder, he was at ease with all levels of society. In 1829 Houghton entered the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Houghton, Michigan
Houghton (; ) is the largest city and seat of government of Houghton County in the U.S. state of Michigan. Located on the Keweenaw Peninsula, Houghton is the largest city in the Copper Country region. It is the fifth-largest city in the Upper Peninsula, with a population of 8,386 at the 2020 census. Houghton is the principal city of the Houghton micropolitan area, which includes all of Houghton and Keweenaw County. The city of Houghton and the county were named after Douglass Houghton, an American geologist and physician, primarily known for his exploration of the Keweenaw Peninsula. Houghton has been listed as one of the "100 Best Small Towns in America" despite it being considered a city. Houghton is home to Michigan Technological University, a public research college founded in 1885. Michigan Tech hosts a yearly Winter Carnival in February, drawing thousands of visitors from around the world. History Native Americans mined copper in and around what would later be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peninsula
A peninsula (; ) is a landform that extends from a mainland and is surrounded by water on most, but not all of its borders. A peninsula is also sometimes defined as a piece of land bordered by water on three of its sides. Peninsulas exist on all continents. The size of a peninsula can range from tiny to very large. The largest peninsula in the world is the Arabian Peninsula. Peninsulas form due to a variety of causes. Etymology Peninsula derives , which is translated as 'peninsula'. itself was derived , or together, 'almost an island'. The word entered English in the 16th century. Definitions A peninsula is usually defined as a piece of land surrounded on most, but not all sides, but is sometimes instead defined as a piece of land bordered by water on three of its sides. A peninsula may be bordered by more than one body of water, and the body of water does not have to be an ocean or a sea. A piece of land on a very tight river bend or one between two rivers is sometimes s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keweenaw Waterway
The Keweenaw Waterway is a partly natural, partly artificial waterway which cuts across the Keweenaw Peninsula of Michigan; it separates Copper Island from the mainland. Parts of the waterway are variously known as the Keweenaw Waterway, Portage Canal, Portage Lake Canal, Portage River, Lily Pond, Torch Lake, and Portage Lake. The waterway connects to Lake Superior at its north and south entries (upper and lower portage entry lighthouses), with sections known as Portage Lake and Torch Lake in between. The primary tributary to Portage Lake is the Sturgeon River. History The waterway was dredged in the 1860s, extending a small river previously used by natives for transportation and fishing. The effort was a joint venture between the United States government and several mining corporations. Legislation for construction of the canal was passed in 1861. This legislation created the Portage Lake & Lake Superior Canal Co. The company began construction of the canal in September 1868 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wayne State University Press
Wayne State University Press (or WSU Press) is a university press that is part of Wayne State University. It publishes under its own name and also the imprints Painted Turtle and Great Lakes Books Series. History The Press has strong subject areas in Africana studies; fairy-tale and folklore studies; film, television, and media studies; Jewish studies; regional interest; and speech and language pathology. Wayne State University Press also publishes eleven academic journals, including ''Marvels & Tales'', and several trade publications, as well as the ''Made in Michigan Writers Series''. WSU Press is located in the Leonard N. Simons Building on Wayne State University's main campus. An editorial board approves the Wayne State University Press's titles. The board considers proposals and manuscripts presented by WSU Press's acquisitions department. WSU Press also has a Board of Visitors, dedicated to fundraising and advocacy in support of the Press. Officially, WSU Press is an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copper Island
Copper Island is a local name given to the northern part of the Keweenaw Peninsula (projecting northeastward into Lake Superior at the western end of the Upper Peninsula of Michigan, United States of America), separated from the rest of the Keweenaw Peninsula by Portage Lake and the Keweenaw Waterway. Geography The area was "isolated" by dredging in 1859 and construction in the 1860s of a ship canal across an isthmus of the Keweenaw Peninsula from Portage Lake—on the east side of the Keweenaw Peninsula—to Lake Superior on the west. The ship canal is wide and deep. The resulting "island" was called ''Kuparisaari'' (meaning "Copper Island") by Finnish, Irish, and French/French Canadian settlers in the area. However, neither the United States Geological Survey nor the state of Michigan identify this area as an island or use this name. Isle Royale is the largest naturally isolated island in Lake Superior; considered as an island, Copper Island would be the largest, with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.svg "Click for more on -> Water Trail")
