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Borborema Plateau
The Borborema Plateau ( Portuguese ''Planalto da Borborema'', also known as the ''Serra da Borborema'') is a plateau in northeastern Brazil which extends across the states of Pernambuco, Paraíba, and Rio Grande do Norte. The plateau is the northeasternmost portion of the Brazilian Highlands and is the most relevant watershed of its region. It ranges approximately from north to south and from east to west. More than 100 rivers originate from the plateau, including the Moxotó, Mundaú, Pajeú, Paraíba do Norte, Seridó, and Una. The Borborema Plateau serves as an orographic barrier, despite its relatively low elevation, against the moist easterly winds of the Atlantic Ocean. Areas west of the plateau, which make up part of the sertão, are arid and prone to drought. The Pajeú River, the largest tributary of the São Francisco River, originates from the Borborema. Geology The Borborema Plateau is part of a huge anastomosing shear zone. The plateau is composed prima ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Queimadas, Paraíba
Queimadas, Paraíba is a municipality in the state of Paraíba in the Northeast Region of Brazil. The town has the seventeenth GDP and is the twelfth largest city of the state. See also *List of municipalities in Paraíba This is a list of the municipalities in the States of Brazil, state of Paraíba, Paraíba (PB), located in the Northeast Region, Brazil, Northeast Region of Brazil. Paraíba is divided into 223 Municipalities of Brazil, municipalities, which are g ... References Municipalities in Paraíba {{Paraíba-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seridó River
The Seridó River is a tributary of the Piranhas River in northeastern Brazil. The Seridó originates in the Borborema Plateau in Paraíba state, and flows northwest through Paraíba and Rio Grande do Norte Rio Grande do Norte (, , ) is one of the states of Brazil. It is located in the northeastern region of the country, forming the northeasternmost tip of the South American continent. The name literally translates as "Great Northern River", refe ... states to join the Piranhas. References Rivers of Rio Grande do Norte Rivers of Paraíba {{RioGrandedoNorte-river-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Igneous
Igneous rock ( ), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rocks are formed through the cooling and solidification of magma or lava. The magma can be derived from partial melts of existing rocks in either a planet's mantle or crust. Typically, the melting is caused by one or more of three processes: an increase in temperature, a decrease in pressure, or a change in composition. Solidification into rock occurs either below the surface as intrusive rocks or on the surface as extrusive rocks. Igneous rock may form with crystallization to form granular, crystalline rocks, or without crystallization to form natural glasses. Igneous rocks occur in a wide range of geological settings: shields, platforms, orogens, basins, large igneous provinces, extended crust and oceanic crust. Geological significance Igneous and metamorphic rocks make up 90–95% of the top of the Earth's crust by volume. Igneous rocks ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shear Zone
In geology, a shear zone is a thin zone within the Earth's crust or upper mantle that has been strongly deformed, due to the walls of rock on either side of the zone slipping past each other. In the upper crust, where rock is brittle, the shear zone takes the form of a fracture called a Fault (geology), fault. In the lower crust and mantle, the extreme conditions of pressure and temperature make the rock ductile. That is, the rock is capable of slowly deforming without fracture, like hot metal being worked by a blacksmith. Here the shear zone is a wider zone, in which the ductile rock has slowly flowed to accommodate the relative motion of the rock walls on either side. Because shear zones are found across a wide depth-range, a great variety of different rock types with their characteristic structures are associated with shear zones. General introduction A shear zone is a zone of strong deformation (with a high strain rate) surrounded by rocks with a lower state of Deforma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anastomosis
An anastomosis (, : anastomoses) is a connection or opening between two things (especially cavities or passages) that are normally diverging or branching, such as between blood vessels, leaf veins, or streams. Such a connection may be normal (such as the foramen ovale in a fetus' heart) or abnormal (such as the patent foramen ovale in an adult's heart); it may be acquired (such as an arteriovenous fistula) or innate (such as the arteriovenous shunt of a metarteriole); and it may be natural (such as the aforementioned examples) or artificial (such as a surgical anastomosis). The reestablishment of an anastomosis that had become blocked is called a reanastomosis. Anastomoses that are abnormal, whether congenital or acquired, are often called fistulas. The term is used in medicine, biology, mycology, geology, and geography. Etymology Anastomosis: medical or Modern Latin, from Greek ἀναστόμωσις, anastomosis, "outlet, opening", Greek ana- "up, on, upon", stoma "mouth" ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
São Francisco River
The São Francisco River (, ) is a large Rivers of Brazil, river in Brazil. With a length of , it is the longest river that runs entirely in Brazilian territory, and the fourth longest in South America and overall in Brazil (after the Amazon River, Amazon, the Paraná River, Paraná and the Madeira River, Madeira). It used to be known as the by the indigenous people before colonisation, and is today also known as . The São Francisco originates in the Serra da Canastra, Canastra mountain range in the central-western part of the state of Minas Gerais. It runs generally north in the states of Minas Gerais and Bahia, behind the coastal range, draining an area of over , before turning east to form the border between Bahia on the right bank and the states of Pernambuco and Alagoas on the left one. After that, it ends on the boundaries between the states of Alagoas and Sergipe and washes into the Atlantic Ocean. In addition to the five states which the São Francisco directly traver ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sertão
The ''sertão'' (, plural ''sertões'') is the " hinterland" or " backcountry" of Brazil. The word refers both to one of the four sub-regions of the Northeast Region of Brazil or the hinterlands of the country in general (similar to the specific association of "outback" with Australia in English). Northeast Brazil is largely covered in a scrubby upland forest called '' caatingas'', from the Tupi language, meaning white forest, since leaves fall during dry season, donning all vegetation, mainly bushes and small trees, now reduced to bare branches and trunks, in its characteristic very light grayish, or off-white, hues. Its borders are not precise. Due to lengthy and unpredictable droughts it is an economically poor region that is well known in Brazilian culture, with a rich history and folklore. The ''sertão'' is also detailed within the famous book of Brazilian literature '' Os Sertões'' (''The Backlands''), which was written by the Brazilian author Euclides da Cunha. Origina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlantic Ocean
The Atlantic Ocean is the second largest of the world's five borders of the oceans, oceanic divisions, with an area of about . It covers approximately 17% of Earth#Surface, Earth's surface and about 24% of its water surface area. During the Age of Discovery, it was known for separating the New World of the Americas (North America and South America) from the Old World of Afro-Eurasia (Africa, Asia, and Europe). Through its separation of Afro-Eurasia from the Americas, the Atlantic Ocean has played a central role in the development of human society, globalization, and the histories of many nations. While the Norse colonization of North America, Norse were the first known humans to cross the Atlantic, it was the expedition of Christopher Columbus in 1492 that proved to be the most consequential. Columbus's expedition ushered in an Age of Discovery, age of exploration and colonization of the Americas by European powers, most notably Portuguese Empire, Portugal, Spanish Empire, Sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orography
Orography is the study of the topographic relief of mountains, and can more broadly include hills, and any part of a region's elevated terrain. Orography (also known as ''oreography'', ''orology,'' or ''oreology'') falls within the broader discipline of geomorphology. The term orography comes from the Greek: , hill, , to write. Uses Mountain ranges and elevated land masses have a major impact on global climate. For instance, the elevated areas of East Africa substantially determine the strength of the Indian monsoon.Srinivasan, J., Nanjundiah, Ravi S. and Chakraborty, Arindam (2005)"Impact of Orography on the Simulation of Monsoon Climate in a General Circulation Model" Indian Institute of Science. In scientific models, such as general circulation models, orography defines the lower boundary of the model over land. When a river's tributaries or settlements by the river are listed in 'orographic sequence', they are in order from the highest (nearest the source of the river) to t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Una River (Pernambuco)
The Una River is a river of Pernambuco state in northeastern Brazil. The Una originates on the Borborema Plateau, flows east, and empties into the Atlantic Ocean near Barreiros. Its length is 290 km, and its basin area is 6,740 km2, of which 6,263 km2 in Pernambuco. It flows through the towns São Bento do Una, Altinho, Palmares and Agua Preta. See also * List of rivers of Pernambuco List of rivers in Pernambuco (Brazilian State). The list is arranged by drainage basin from north to south, with respective tributaries indented under each larger stream's name and ordered from downstream to upstream. All rivers in Pernambuco dra ... References Rivers of Pernambuco {{Pernambuco-river-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paraíba Do Norte River
The Paraíba do Norte River, mostly known as Paraíba River, is the most important watercourse of the state of Paraíba in northeastern Brazil. The river originates in the Borborema Plateau, and flows northeast to empty into the Atlantic Ocean, north of João Pessoa, Paraíba, João Pessoa, the state capital. Its constantly menaced estuary has a handful of little islands—among them Restinga Island, Restinga and Stuart—and is the habitat of a range of animal species, as well as a number of ecosystems such as mangroves, the Atlantic Forest and salt marshes. References Rivers of Paraíba {{Paraíba-river-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alagoas
Alagoas () is one of the 27 federative units of Brazil and is situated in the eastern part of the Northeast Region, Brazil, Northeast Region. It borders: Pernambuco (N and NW); Sergipe (S); Bahia (SW); and the Atlantic Ocean (E). Its capital is the city of Maceió. It has 1.6% of the Brazilian population and produces 0.8% of the Brazilian GDP. It is made up of 102 Municipalities of Brazil, municipalities and its most populous cities are Maceió, Arapiraca, Palmeira dos Índios, Rio Largo, Penedo, União dos Palmares, São Miguel dos Campos, Santana do Ipanema, Delmiro Gouveia, Coruripe, and Campo Alegre, Alagoas, Campo Alegre. It is the second smallest Brazilian state in area (larger only than Sergipe) and it is List of Brazilian states by population, 16th in population. It is also one of the largest producers of sugarcane, coconuts, and natural gas in the country. Alagoas also has oil exploration, mostly of onshore deposits. Initially, the territory of Alagoas constituted the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
