Maracaibo Lake
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Maracaibo Lake
Lake Maracaibo (Spanish: Lago de Maracaibo; Anu: Coquivacoa) is a lagoon in northwestern Venezuela, the largest lake in South America and one of the oldest on Earth, formed 36 million years ago in the Andes Mountains. The fault in the northern section has collapsed and is rich in oil and gas resources. It is Venezuela's main oil producing area and an important fishing and agricultural producing area. It is inhabited by a quarter of the country's population and is also the place with the most frequent lightning on earth. The famous Catatumbo lightning can illuminate nighttime navigation, and eutrophication caused by oil pollution is a major environmental problem facing the lake. Geography Lake Maracaibo is located in the Maracaibo lowland in the faulted basin between the Perija Mountains and the Merida Mountains of the Eastern Cordillera Mountains in northwestern Venezuela. The lake is in the shape of a vase. It is 210 kilometers long from north to south, 121 kilometers wide from ...
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Ancient Lake
An ancient lake is a lake that has consistently carried water for more than one million years. Many have existed for more than 2.6 million years, the full Quaternary period. Ancient lakes continue to persist due to plate tectonics in an active rift zone. This active rift zone creates lakes that are extremely deep and difficult to naturally fill with sediment. Due to the prolonged life of ancient lakes, they serve as models for isolated evolutionary traits and speciation. Most of the world's bodies of water are less than 18,000 years old. There are only 20 ancient lakes over 1 million years old. Lake Baikal is often considered the oldest, as clear evidence shows that it is 25–30 million years old. Lake Zaysan may be even older, of Cretaceous origin and at least 66 million years old (most likely around 70 million years), but its exact age is controversial and labelled with some uncertainty. Another contender for oldest is Lake Maracaibo, estimated to be 20–36 million years o ...
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Chama River (Venezuela)
The Río Chama (), is one of the main rivers of the state of Mérida in Venezuela. The headwaters of the Chama are the Mifafí high lands, in the Andes Range, near the town of Apartaderos. Its outlet is at Lake Maracaibo. From the headwaters to an elevation of about above sea level, the Chama runs as a steep mountain torrent. As it progresses through the valley, it quickly becomes contaminated with sewage from the many towns that lie along its path. The river continues its journey passing at the foot of the plateau where the city of Mérida sits. Near the town of Ejido, the Albarregas river joins the Chama, dumping all the pollutants from the city of Mérida and thus reaching its peak of contamination. From there, the river continues in steep descent, through a very rocky river bed. This allows the water to become oxygenated and naturally purified from its organic contaminants. At the town of Las Gonzalez, the Chama, while still contaminated, is often used by white water raf ...
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Venezuelan War Of Independence
The Venezuelan War of Independence ( es, Guerra de Independencia de Venezuela, links=no, 1810–1823) was one of the Spanish American wars of independence of the early nineteenth century, when independence movements in Latin America fought against rule by the Spanish Empire, emboldened by Spain's troubles in the Napoleonic Wars. The establishment of the Supreme Caracas Junta following the forced deposition of Vicente Emparan as Captain General of the Captaincy General of Venezuela on 19 April 1810, marked the beginnings of the war. On 5 July 1811, seven of the ten provinces of the Captaincy General of Venezuela declared their independence in the Venezuelan Declaration of Independence. The First Republic of Venezuela was lost in 1812 following the 1812 Caracas earthquake and the 1812 Battle of La Victoria. Simón Bolívar led an "Admirable Campaign" to retake Venezuela, establishing the Second Republic of Venezuela in 1813; but this too did not last, falling to a combination ...
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Battle Of Lake Maracaibo
The Battle of Lake Maracaibo also known as the "Naval Battle of the Lake" was fought on 24 July 1823 on Venezuela's Lake Maracaibo between fleets under the commands of Republican Admiral José Prudencio Padilla and royalist Captain Ángel Laborde. The engagement was won by the Republican forces, and was the last battle of the Venezuelan War of Independence and the larger Spanish American wars of independence. The Republican ships were part of the armed forces of Gran Colombia led by Simón Bolívar. The Battle of Carabobo of 1821 is usually seen in the historiography as the culminating battle for Venezuelan independence. However, some historians point out that if the Battle of Lake Maracaibo had been a victory for the Royalist forces, the Spanish Crown might have been able to establish a new front in Western Venezuela from which to attack the Republican forces stationed in Venezuela. As a result of the defeat, the Spanish did not send any reinforcing regiments to Venezuela, ...
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Columbia Encyclopedia
The ''Columbia Encyclopedia'' is a one-volume encyclopedia produced by Columbia University Press and, in the last edition, sold by the Gale Group. First published in 1935, and continuing its relationship with Columbia University, the encyclopedia underwent major revisions in 1950 and 1963; the current edition is the sixth, printed in 2000. It contains over 51,000 articles totaling some 6.5 million words and has also been published in two volumes. An electronic version of the encyclopedia is available, and the ''Columbia Encyclopedia'' is licensed by several different companies for use over the Internet. See also *''Lincoln Library of Essential Information'' * Lists of encyclopedias For lists of encyclopedias, see: * List of encyclopedias by branch of knowledge * List of encyclopedias by date * List of encyclopedias by language * List of online encyclopedias See also * Bibliography of encyclopedias * List of almanacs * ... * List of online encyclopedias References ...
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Alonso De Ojeda
Alonso de Ojeda (; c. 1466 – c. 1515) was a Spanish explorer, governor and conquistador. He travelled through modern-day Guyana, Venezuela, Trinidad, Tobago, Curaçao, Aruba and Colombia. He navigated with Amerigo Vespucci who is famous for having named ''Venezuela'', which he explored during his first two expeditions, for having been the first European to visit Guyana, Curaçao, Colombia, and Lake Maracaibo, and later for founding Santa Cruz (La Guairita). Early life Alonso de Ojeda was born in Torrejoncillo del Rey, New Castile around 1466.Catholic Encyclopedia 1913 His father, Rodrigo de Huete, was a minor noble who fought for Isabel in 1474 during the War of the Castilian Succession. Isabel was grateful for his support and put his son, Alonso, under her protection. In his youth, Alonso served the Duke of Medinaceli, Luis de la Cerda.Vigneras 1976 In service to the duke, he distinguished himself in the conquest of Granada with his military abilities, his skill ...
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Atlantic Ocean
The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe and Asia from the "New World" of the Americas in the European perception of the World. The Atlantic Ocean occupies an elongated, S-shaped basin extending longitudinally between Europe and Africa to the east, and North and South America to the west. As one component of the interconnected World Ocean, it is connected in the north to the Arctic Ocean, to the Pacific Ocean in the southwest, the Indian Ocean in the southeast, and the Southern Ocean in the south (other definitions describe the Atlantic as extending southward to Antarctica). The Atlantic Ocean is divided in two parts, by the Equatorial Counter Current, with the North(ern) Atlantic Ocean and the South(ern) Atlantic Ocean split at about 8°N. Scientific explorations of the A ...
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Eocene
The Eocene ( ) Epoch is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', "dawn") and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope Carbon-13, 13C in the atmosphere was exceptionally low in comparison with the more common isotope Carbon-12, 12C. The end is set at a major extinction event called the ''Grande Coupure'' (the "Great Break" in continuity) or the Eocene–Oligocene extinction event, which may be related to the impact of one or more large bolides in Popigai impact structure, Siberia and in what is now ...
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NASA
The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeeding the National Advisory Committee for Aeronautics (NACA), to give the U.S. space development effort a distinctly civilian orientation, emphasizing peaceful applications in space science. NASA has since led most American space exploration, including Project Mercury, Project Gemini, the 1968-1972 Apollo Moon landing missions, the Skylab space station, and the Space Shuttle. NASA supports the International Space Station and oversees the development of the Orion spacecraft and the Space Launch System for the crewed lunar Artemis program, Commercial Crew spacecraft, and the planned Lunar Gateway space station. The agency is also responsible for the Launch Services Program, which provides oversight of launch operations and countdown management f ...
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Spit (landform)
A spit or sandspit is a deposition bar or beach landform off coasts or lake shores. It develops in places where re-entrance occurs, such as at a cove's headlands, by the process of longshore drift by longshore currents. The drift occurs due to waves meeting the beach at an oblique angle, moving sediment down the beach in a zigzag pattern. This is complemented by longshore currents, which further transport sediment through the water alongside the beach. These currents are caused by the same waves that cause the drift. Hydrology and geology Where the direction of the shore inland ''re-enters'', or changes direction, for example at a headland, the longshore current spreads out or dissipates. No longer able to carry the full load, much of the sediment is dropped. This is called deposition. This submerged bar of sediment allows longshore drift or littoral drift to continue to transport sediment in the direction the waves are breaking, forming an above-water spit. Without the co ...
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River Delta
A river delta is a landform shaped like a triangle, created by deposition (geology), deposition of sediment that is carried by a river and enters slower-moving or stagnant water. This occurs where a river enters an ocean, sea, estuary, lake, reservoir, or (more rarely) another river that cannot carry away the supplied sediment. It is so named because its triangle shape resembles the Greek letter Delta. The size and shape of a delta is controlled by the balance between watershed processes that supply sediment, and receiving basin processes that redistribute, sequester, and export that sediment. The size, geometry, and location of the receiving basin also plays an important role in delta evolution. River deltas are important in human civilization, as they are major agricultural production centers and population centers. They can provide Coast, coastline defense and can impact drinking water supply. They are also Ecology, ecologically important, with different species' assemblages ...
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