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Venezuelan Andes Montane Forests
The Venezuelan Andes montane forests (NT0175) is an ecoregion in the northern arm of the Andes in Venezuela. It contains montane and cloud forests, reaching up to the high-level Cordillera de Merida páramo high moor ecoregion. The forests are home to many endemic species of flora and fauna. Their lower levels are threatened by migrant farmers, who clear patches of forest to grow crops, then move on. Geography Location The Venezuelan Andes montane forests ecoregion covers most of the Venezuelan states of Mérida and Trujillo, much the state of Táchira and the highlands of the states of Lara and Barinas. It includes a small area in Colombia. It covers the lower part of the Venezuelan extension of the Cordillera Occidental of the northern Andes. It has an area of . To the southeast it adjoins the Llanos and the Apure–Villavicencio dry forests, and to the southwest adjoins the Cordillera Oriental montane forests. To the northwest it adjoins the Catatumbo moist forests and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sierra De La Culata
The Sierra de La Culata is a mountain range in the largest massif in Venezuela, the Cordillera de Mérida, which in turn is part of the northern extent of the Cordillera de los Andes (Andes Mountains). The Sierra la Culata includes some of the highest peaks in Venezuela, such as Pico Piedras Blancas, Pico Pan de Azúcar, and Collado del Cóndor. It is located between the states of Mérida and Trujillo. Most of the lagoons are a result of the Mérida glaciation. The Sierra La Culata National Park is a protected area within the range. Gallery File:El grito (Andes Venezolanos).jpg, File:Culata Blanca.JPG, File:Páramo de Mucubají.jpg, See also * Merida glaciation *Sierra Nevada de Merida Sierra (Spanish for "mountain range" and " saw", from Latin '' serra'') may refer to the following: Places Mountains and mountain ranges * Sierra de Juárez, a mountain range in Baja California, Mexico * Sierra de las Nieves, a mountain range ... External links Schubert, Carlos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barinas (state)
) , anthem = '' Himno del Estado Barinas'' , image_map = Barinas in Venezuela.svg , map_alt = , map_caption = Location within Venezuela , pushpin_map = , pushpin_map_alt = , pushpin_mapsize = , pushpin_map_caption = , coordinates = , coordinates_footnotes = , subdivision_type = Country , subdivision_name = Venezuela , subdivision_type1 = , subdivision_name1 = , subdivision_type2 = , subdivision_name2 = , established_title = Created , established_date = 1937 , founder = , named_for = , seat_type = Capital , seat = Barinas , government_footnotes = , government_type = , leader_party = , governing_body = Legislative Council , leader_title = Governor , leader_name = Sergio Garrido (2022–present) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Granite
Granite () is a coarse-grained ( phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies underground. It is common in the continental crust of Earth, where it is found in igneous intrusions. These range in size from dikes only a few centimeters across to batholiths exposed over hundreds of square kilometers. Granite is typical of a larger family of ''granitic rocks'', or '' granitoids'', that are composed mostly of coarse-grained quartz and feldspars in varying proportions. These rocks are classified by the relative percentages of quartz, alkali feldspar, and plagioclase (the QAPF classification), with true granite representing granitic rocks rich in quartz and alkali feldspar. Most granitic rocks also contain mica or amphibole minerals, though a few (known as leucogranites) contain almost no dark minerals. Granite is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limestone
Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms when these minerals precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes, such as the accumulation of corals and shells in the sea, have likely been more important for the last 540 million years. Limestone often contains fossils which provide scientists with information on ancient environments and on the evolution of life. About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone. The remaining carbonate rock is mostly dolomite, a closely related rock, which contains a high percentage of the mineral dolomite, . ''Magnesian limestone'' is an obsolete and poorly-defined term used variously for dolomite, for lime ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gneiss
Gneiss ( ) is a common and widely distributed type of metamorphic rock. It is formed by high-temperature and high-pressure metamorphic processes acting on formations composed of igneous or sedimentary rocks. Gneiss forms at higher temperatures and pressures than schist. Gneiss nearly always shows a banded texture characterized by alternating darker and lighter colored bands and without a distinct cleavage. Gneisses are common in the ancient crust of continental shields. Some of the oldest rocks on Earth are gneisses, such as the Acasta Gneiss. Description Orthogneiss from the Czech Republic In traditional English and North American usage, a gneiss is a coarse-grained metamorphic rock showing compositional banding ( gneissic banding) but poorly developed schistosity and indistinct cleavage. In other words, it is a metamorphic rock composed of mineral grains easily seen with the unaided eye, which form obvious compositional layers, but which has only a weak tendency to fra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schist
Schist ( ) is a medium-grained metamorphic rock showing pronounced schistosity. This means that the rock is composed of mineral grains easily seen with a low-power hand lens, oriented in such a way that the rock is easily split into thin flakes or plates. This texture reflects a high content of platy minerals, such as micas, talc, chlorite, or graphite. These are often interleaved with more granular minerals, such as feldspar or quartz. Schist typically forms during regional metamorphism accompanying the process of mountain building (orogeny) and usually reflects a medium grade of metamorphism. Schist can form from many different kinds of rocks, including sedimentary rocks such as mudstones and igneous rocks such as tuffs. Schist metamorphosed from mudstone is particularly common and is often very rich in mica (a ''mica schist''). Where the type of the original rock (the protolith) is discernible, the schist is usually given a name reflecting its protolith, such as ''schis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quartzite
Quartzite is a hard, non- foliated metamorphic rock which was originally pure quartz sandstone.Essentials of Geology, 3rd Edition, Stephen Marshak, p 182 Sandstone is converted into quartzite through heating and pressure usually related to tectonic compression within orogenic belts. Pure quartzite is usually white to grey, though quartzites often occur in various shades of pink and red due to varying amounts of hematite. Other colors, such as yellow, green, blue and orange, are due to other minerals. The term ''quartzite'' is also sometimes used for very hard but unmetamorphosed sandstones that are composed of quartz grains thoroughly cemented with additional quartz. Such sedimentary rock has come to be described as orthoquartzite to distinguish it from metamorphic quartzite, which is sometimes called metaquartzite to emphasize its metamorphic origins. Quartzite is very resistant to chemical weathering and often forms ridges and resistant hilltops. The nearly pure silica co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pliocene
The Pliocene ( ; also Pleiocene) is the epoch in the geologic time scale that extends from 5.333 million to 2.58See the 2014 version of the ICS geologic time scale million years ago. It is the second and most recent epoch of the Period in the Cenozoic Era. The Pliocene follows the Miocene Epoch and is followed by the Pleistocene Epoch. Prior to the 2009 revision of the geologic time scale, which placed the fou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleocene
The Paleocene, ( ) or Palaeocene, is a geological epoch that lasted from about 66 to 56 million years ago (mya). It is the first epoch of the Paleogene Period in the modern Cenozoic Era. The name is a combination of the Ancient Greek ''palaiós'' meaning "old" and the Eocene Epoch (which succeeds the Paleocene), translating to "the old part of the Eocene". The epoch is bracketed by two major events in Earth's history. The K–Pg extinction event, brought on by an asteroid impact and possibly volcanism, marked the beginning of the Paleocene and killed off 75% of living species, most famously the non-avian dinosaurs. The end of the epoch was marked by the Paleocene–Eocene Thermal Maximum (PETM), which was a major climatic event wherein about 2,500–4,500 gigatons of carbon were released into the atmosphere and ocean systems, causing a spike in global temperatures and ocean acidification. In the Paleocene, the continents of the Northern Hemisphere were still connected v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tamá Massif
The Tamá Massif ( es, Macizo del Tamá) is a group of mountains on the border between Colombia and Venezuela to the south of Lake Maracaibo. It contains evergreen rainforest and cloud forest at the lower levels, and páramos (high moors) at the highest levels. Location The Tamá is a prolongation of the Cordillera Oriental of the Colombian Andes. It is separated from the Cordillera de Mérida in the Venezuelan Andes by the Táchira depression, which more than 50 million years ago was a strait that connected Lake Maracaibo with the Orinoco basin. Elevations range from . Average annual temperature is . Average annual rainfall is . The Tamá National Natural Park in Colombia and the El Tamá National Park in Venezuela protect parts of the Tamá Massif. The two parks together form a protected area of . Geography The Tamá massif is a set of folded mountain ranges with extremely steep topography. It contains the El Tamá páramos (high moors) at an elevation of , Cerro El Cobr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barquisimeto Depression
Barquisimeto (; guc, Watkisimeeta) is a city in Venezuela. It is the capital of the state of Lara and head of Iribarren Municipality. It is an important urban, industrial, commercial and transportation center of the country, recognized as the fourth-largest city by population and area in Venezuela after Caracas, Maracaibo and Valencia. History Barquisimeto was founded in 1552 by Juan de Villegas, as a headquarters and to have better control of the territory believed to be rich in gold. Its original name was Nueva Segovia de Barquisimeto and then it was shortened to just Barquisimeto. This city had four settlements due to ignorance of the physical environment of the region. The first one was in 1552 nearby Buría River, but moved in 1556 due to frequent floods suffered by inhabitants. The second one was in the valley of the Turbio River where the city stayed until Lope de Aguirre burned it down in 1561. Its rebuilding was made , but in 1562 they asked for permission to move to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Táchira Depression
The Táchira Depression ( es, Depresión de Táchira) is a saddle of land connecting the Lake Maracaibo basin to the Orinoco basin in the state of Táchira, Venezuela. It forms a break in the eastern Andes, separating the Tamá Massif to the west from the Cordillera de Mérida to the east. The depression has been thought to present a barrier to the movement of species between the Colombian and Venezuelan Andes, but this effect may have been relatively low during the recent ice ages. The mountains of the region have potential for coffee farming and hydroelectric power generation, while the lower levels are suitable for farming. Location The Eastern Cordillera of the Colombian Andes forks from the Pamplona Node into two long branches. The Cordillera de Periiá extends northward and the Tamá Massif and Cordillera de Mérida extends in a northeast direction. The second branch is divided by the Táchira depression, an area of low lands between the valleys of the Táchira River to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
