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Iapetus Suture
The Iapetus Suture is one of several major Fault (geology), geological faults caused by the collision of several ancient land masses forming a suture (geology), suture. It represents in part the remains of what was once the Iapetus Ocean. Iapetus was the father of Atlas (mythology), Atlas in Greek mythology, making his an appropriate name for what used to be called the 'Proto-Atlantic Ocean'. When the Atlantic Ocean opened, in the Cretaceous period, it took a slightly different line from that of the Iapetus suture, with some originally Laurentian rocks being left behind in north-west Europe and other, Avalonian, rocks remaining as part of Newfoundland. Background The Iapetus Ocean was an ancient ocean which existed in the Southern Hemisphere approximately 600 million years ago and was bordered by several paleocontinents: Laurentia, Ganderia, Carolinia, Avalonia, and Baltica. During a series of geological events, the Salinic orogeny and Caledonian orogeny all three land masses b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caledonides EN
The Caledonian orogeny was a mountain-building era recorded in the northern parts of the British Isles, the Scandinavian Mountains, Svalbard, eastern Greenland and parts of north-central Europe. The Caledonian orogeny encompasses events that occurred from the Ordovician to Early Devonian, roughly 490–390 million years ago ( Ma). It was caused by the closure of the Iapetus Ocean when the continents and terranes of Laurentia, Baltica and Avalonia collided. The orogeny is named for Caledonia, the Latin name for Scotland. The term was first used in 1885 by Austrian geologist Eduard Suess for an episode of mountain building in northern Europe that predated the Devonian period. Geologists like Émile Haug and Hans Stille saw the Caledonian event as one of several episodic phases of mountain building that had occurred during Earth's history. Current understanding has it that the Caledonian orogeny encompasses a number of tectonic phases that can laterally be diachronous. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caledonian Orogeny
The Caledonian orogeny was a mountain-building era recorded in the northern parts of the British Isles, the Scandinavian Mountains, Svalbard, eastern Greenland and parts of north-central Europe. The Caledonian orogeny encompasses events that occurred from the Ordovician to Early Devonian, roughly 490–390 million years ago ( Ma). It was caused by the closure of the Iapetus Ocean when the continents and terranes of Laurentia, Baltica and Avalonia collided. The orogeny is named for Caledonia, the Latin name for Scotland. The term was first used in 1885 by Austrian geologist Eduard Suess for an episode of mountain building in northern Europe that predated the Devonian period. Geologists like Émile Haug and Hans Stille saw the Caledonian event as one of several episodic phases of mountain building that had occurred during Earth's history. Current understanding has it that the Caledonian orogeny encompasses a number of tectonic phases that can laterally be dia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clogherhead
Clogherhead () is a fishing village in County Louth, Ireland. Located in a natural bay on the east coast it is bordered by the villages of Annagassan to the north and Termonfeckin to the south. It has a population of 2,145 according to the 2016 census. It is located in the townlands of Clogher and Callystown, about northeast of Drogheda. As a seaside village, its main industries are fishing and farming, and there has been an RNLI lifeboat stationed in the village for over 100 years. Name Historically, the village was known simply as Clogher (''Clochair'') or Killclogher (''Cill Chlochair'') while the headland was called Clogher Head. Today the headland remains Clogher Head, the village is called Clogherhead and the townland they are in is called Clogher. The headland has a walking trail from the village along steep sea cliffs to the nearby harbour of Port Oriel (''Port Oirialla''). At low tide, it is also possible to walk the beach as far as the Boyne Estuary. From the head ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River Shannon
The River Shannon ( ga, Abhainn na Sionainne, ', '), at in length, is the longest river in the British Isles. It drains the Shannon River Basin, which has an area of , – approximately one fifth of the area of the island of Ireland. The Shannon divides the west of Ireland (principally the province of Connacht) from the east and south ( Leinster and most of Munster). ( County Clare, being west of the Shannon but part of the province of Munster, is the major exception.) The river represents a major physical barrier between east and west, with fewer than thirty-five crossing points between Limerick city in the south and the village of Dowra in the north. The river takes its name after ''Sionna'', a Celtic goddess. Known as an important waterway since antiquity, the Shannon first appeared in maps by the Graeco-Egyptian geographer Ptolemy ( 100 – 170 AD). The river flows generally southwards from the Shannon Pot in County Cavan before turning west and emptying i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kilkee Folds
Kilkee () is a small coastal town in County Clare, Ireland. It is in the parish of Kilkee, formerly Kilfearagh. Kilkee is midway between Kilrush and Doonbeg on the N67 road. The town is popular as a seaside resort. The horseshoe bay is protected from the Atlantic Ocean by the Duggerna Reef. History During the early part of the 19th century, Kilkee was just a small fishing village but in the 1820s when a paddle steamer service from Limerick to Kilrush was launched, it began to attract visitors. It has been a resort since then and was featured on the front page of ''The Illustrated London News'' as the premier bathing spot in what was then the United Kingdom of Great Britain and Ireland. Gradually the town grew as the demand for holiday homes by the sea increased, resulting in a building boom in the 1830s. As demand for lodgings in Kilkee grew, several hotels were built. Along with these, three churches were built, a Roman Catholic church in 1831, a Protestant church in 18 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red Indian Lake
Beothuk Lake, formerly Red Indian Lake, is located in the interior of central Newfoundland in the province of Newfoundland and Labrador, Canada. The lake drains into the Exploits River which flows through the interior of Newfoundland and exits into the Atlantic Ocean through the Bay of Exploits. Lloyds River, the Victoria River and Star River feed into the lake. History The Beothuk, also known as 'Red Indians,' inhabited several campsites on the shore of the lake. An expedition into the interior by John Cartwright and brother George Cartwright in search of the Beothuk found only abandoned campsites. At the time of their discovery of the lake they named it ''Lieutenant's Lake'' and they had assumed that the lake was part of the same system as ''Lake Mickmack'', known today as Grand Lake. In January 1811, an expedition led by David Buchan travelled up the Exploits River in an attempt to establish friendly relations with the Beothuk; Buchan found them, but the encounter went ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newfoundland (island)
Newfoundland (, ; french: link=no, Terre-Neuve, ; ) is a large island off the east coast of the North American mainland and the most populous part of the Canadian province of Newfoundland and Labrador. It has 29 percent of the province's land area. The island is separated from the Labrador Peninsula by the Strait of Belle Isle and from Cape Breton Island by the Cabot Strait. It blocks the mouth of the Saint Lawrence River, creating the Gulf of Saint Lawrence, the world's largest estuary. Newfoundland's nearest neighbour is the French overseas collectivity of Saint Pierre and Miquelon. With an area of , Newfoundland is the world's 16th-largest island, Canada's fourth-largest island, and the largest Canadian island outside the North. The provincial capital, St. John's, is located on the southeastern coast of the island; Cape Spear, just south of the capital, is the easternmost point of North America, excluding Greenland. It is common to consider all directly neighb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quebec
Quebec ( ; )According to the Canadian government, ''Québec'' (with the acute accent) is the official name in Canadian French and ''Quebec'' (without the accent) is the province's official name in Canadian English is one of the thirteen provinces and territories of Canada. It is the largest province by area and the second-largest by population. Much of the population lives in urban areas along the St. Lawrence River, between the most populous city, Montreal, and the provincial capital, Quebec City. Quebec is the home of the Québécois nation. Located in Central Canada, the province shares land borders with Ontario to the west, Newfoundland and Labrador to the northeast, New Brunswick to the southeast, and a coastal border with Nunavut; in the south it borders Maine, New Hampshire, Vermont, and New York in the United States. Between 1534 and 1763, Quebec was called ''Canada'' and was the most developed colony in New France. Following the Seven Years' War ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baie Verte, Newfoundland And Labrador
Baie Verte ( 2021 Population 1,311) is a town located on the north coast of the island portion of the Canadian province of Newfoundland and Labrador on the Baie Verte Peninsula. The French named the area for its greenness, "green bay." Geography Baie Verte is one of 42 communities that make up the Emerald Zone which is located in the North Central portion of Newfoundland. Baie Verte dates to the late 19th century, but remained a small village until the discovery of asbestos and other ore bodies of copper, lead, zinc and gold in the mid-1950s when the town underwent major expansion. Bowering Brother's steamers called in the area in the 1950s to transport the ore found here. It became a town in 1968. The major "Baie Verte fault line" starts here and runs from here to Long Island Sound by way of Vermont.The Chronicle, September 8, 2008, page 22, "Geologist give talk about Lowell's geologic history" Climate History The Baie Verte asbestos deposit was discovered in 1955, and Adv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ordovician
The Ordovician ( ) is a geologic period and system, the second of six periods of the Paleozoic Era. The Ordovician spans 41.6 million years from the end of the Cambrian Period million years ago (Mya) to the start of the Silurian Period Mya. The Ordovician, named after the Welsh tribe of the Ordovices, was defined by Charles Lapworth in 1879 to resolve a dispute between followers of Adam Sedgwick and Roderick Murchison, who were placing the same rock beds in North Wales in the Cambrian and Silurian systems, respectively. Lapworth recognized that the fossil fauna in the disputed strata were different from those of either the Cambrian or the Silurian systems, and placed them in a system of their own. The Ordovician received international approval in 1960 (forty years after Lapworth's death), when it was adopted as an official period of the Paleozoic Era by the International Geological Congress. Life continued to flourish during the Ordovician as it did in the earlier Cambrian P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Back-arc Basin
A back-arc basin is a type of geologic basin, found at some convergent plate boundaries. Presently all back-arc basins are submarine features associated with island arcs and subduction zones, with many found in the western Pacific Ocean. Most of them result from tensional forces, caused by a process known as oceanic trench rollback, where a subduction zone moves towards the subducting plate. Back-arc basins were initially an unexpected phenomenon in plate tectonics, as convergent boundaries were expected to universally be zones of compression. However, in 1970, Dan Karig published a model of back-arc basins consistent with plate tectonics. Structural characteristics Back-arc basins are typically very long and relatively narrow, often thousands of kilometers long while only being a few hundred kilometers wide at most. For back-arc extension to form, a subduction zone is required, but not all subduction zones have a back-arc extension feature. Back-arc basins are found in ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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