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Hooiberg
( Dutch: /ˈɦojbɛrx/ ()) is a distinctively shaped, conical hill located at the heart of the island of Aruba. This geological formation is a prominent and recognizable landmark that has long captured the attention of locals and visitors alike—Hooiberg is Aruba's centerpiece. Name Many old place names ( toponyms) on Aruba have indigenous origins, but the language that was spoken in the past has been lost to posterity. Historically, this hill was known as ''Orcuyo,'' an old indigenous name. The hill has had various names throughout the years. In Spanish, it was called ''Cerro de Paja ó Pan de Azucar'', meaning "hill of straw", "sugar bread", or " sugarloaf". Sugarloaf refers to refined sugar shaped into a tall conical form, which was sold before the 1900s. Hooiberg is one of several formations named after Cerro Pan de Azucar (such as Pan de Azucar Island in the Philippines or Sugarloaf Mountain in Brazil). The Dutch gave it their own name, and the spelling of Hooiberg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hooiberg W- Different Spelling
(Dutch: /ˈɦojbɛrx/ ()) is a distinctively shaped, conical hill located at the heart of the island of Aruba. This geological formation is a prominent and recognizable landmark that has long captured the attention of locals and visitors alike—Hooiberg is Aruba's centerpiece. Name Many old place names (toponyms) on Aruba have indigenous origins, but the language that was spoken in the past has been lost to posterity. Historically, this hill was known as ''Orcuyo,'' an old indigenous name. The hill has had various names throughout the years. In Spanish, it was called ''Cerro de Paja ó Pan de Azucar'', meaning "hill of straw", "sugar bread", or "sugarloaf". Sugarloaf refers to refined sugar shaped into a tall conical form, which was sold before the 1900s. Hooiberg is one of several formations named after Cerro Pan de Azucar (such as Pan de Azucar Island in the Philippines or Sugarloaf Mountain in Brazil). The Dutch gave it their own name, and the spelling of Hooiberg has ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aruba
Aruba, officially the Country of Aruba, is a constituent island country within the Kingdom of the Netherlands, in the southern Caribbean Sea north of the Venezuelan peninsula of Paraguaná Peninsula, Paraguaná and northwest of Curaçao. In 1986, Aruba became a constituent country within the Kingdom of the Netherlands and acquired the formal name the Country of Aruba. Aruba has an area of . Aruba measures in length from its northwestern to its southeastern end and is across at its widest point. Aruba is geologically located in South America, South-America, lying on the South-American continental shelf. Alongside Bonaire and Curaçao, Aruba forms a group referred to as the ABC islands (Leeward Antilles), ABC islands. The Dutch Caribbean encompasses the ABC islands along with the other three substantial islands, the SSS islands. In contrast to much of the Caribbean, which experiences humid tropical climates, Aruba has a dry climate with an arid Deserts and xeric shrublands, xer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jamanota
Jamanota is a hill situated within Aruba's Arikok National Park, reaching a height of and holding the distinction of being the highest point on the island. Jamanota is a word from the Arawak language and can be explained somewhat as follows: JA or YA is spirit; MA is great or great spirit; NO is a suffix denoting a plural; TA is source. So about, Source of Great Spirits. This region is known for its rugged and dry landscape, as well as its diverse wildlife, such as the Aruba Parakeet, Aruba Island Rattlesnake, and freely-roaming goats that graze upon the undulating hills of the region. At Jamanota's summit, one can experience a panoramic view that encompasses Frenchman's Pass along the southern coastline, which holds historical significance as indigenous people once defended the island against the French invaders. Geology Aruba features three distinct landscapes, each characterized by unique geological formations. In the northwestern part of the island one can find the fl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Casibari Rock Formations
Casibari is a settlement of Paradera, north of Hooiberg, in Aruba. Evidence of prehistoric rock drawings is still visible at the site. "Casibari" is an Indian name of Arawak (possibly Taíno) origin and can be explained as follows: CA as a prefix: where there are, SIBA (or CIBA) is stone and RI as a suffix is: good; so Where There are Good Stones. The name can also be explained as follows: CASIBA (or CACIBA) is hollow or cavern with RI is good; so Good Hole (cavern). This toponym also stands for ''cas di baril'', house of barrel, the first tin house of Aruba, made from oil barrels. Geography Landforms Aruba was mainly shaped by plate collisions that led to the creation of igneous rocks and their subsequent exposure. However, despite this volcanic origin, a significant portion of the surface features in this area consists of sedimentary landforms. This transformation occurred during the Upper Eocene epoch when sedimentary processes, like the formation of reef terraces, took ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ayo Rock Formations
Ayo Rock Formations are monolithic rock boulders located on the island of Aruba in the Caribbean, near Ayo village and about from the defunct natural bridge towards Casibari. Similarly, the Casibari Boulders are about inland between Natural Bridge and Oranjestad, the capital of Aruba, to the west of Boca Andicuri. History The Arawak people were the earliest settlers on the island. They used to visit Ayo Rock Formations so that they could hear incoming thunderstorms closing in on the island of Aruba. They also carved paintings in rocks called petroglyphs while performing religious rites. Formations One of the most unusual and notable rock formations on the island are the Casibari Boulders, which are tonalite rocks seen to the north of Hooiberg. They rise above the desert landscape giving a panoramic view of the island. They are located amidst cacti, and lizards are commonly encountered here. The boulders have unusual shapes resembling birds and dragons. There is no plausible ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norite
Norite is a mafic Intrusive rock, intrusive igneous rock composed largely of the calcium-rich plagioclase labradorite, orthopyroxene, and olivine. The name ''norite'' is derived from Norway, by its Norwegian name ''Norge''. Norite, also known as orthopyroxene gabbro, may be essentially indistinguishable from gabbro without thin section study under the petrographic microscope. The principal difference between norite and gabbro is the type of pyroxene of which it is composed. Norite is predominantly composed of orthopyroxenes, largely high-magnesian enstatite or an iron-bearing hypersthene. The principal pyroxenes in gabbro are clinopyroxenes, generally iron-rich augites. Norite occurs with gabbro and other mafic to ultramafic rocks in layered intrusions which are often associated with platinum orebodies such as in the Bushveld Igneous Complex in South Africa, the Skaergaard intrusion, Skaergaard igneous complex of Greenland, and the Stillwater igneous complex in Montana. Norite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melanocratic Rock
Color index, as a geological term, is a measure of the ratio between generally dark mafic minerals and generally light felsic minerals in an igneous rock. The color index of an igneous rock is the volume percentage of mafic minerals in the rock, excluding minerals generally regarded as "colorless" such as apatite, muscovite, primary carbonates and similar minerals. Rocks can be sorted into classes by several systems based on their color index, including into leucocratic and melanocratic rocks, or into (mineralogically) felsic and mafic rocks. With an accuracy within 1%, color index can be determined by applying a microscope to a flat, planar section of rock and employing a point counting technique to determine the amount of light or dark rock. In the field, it can be generally estimated visually from hand specimens. The most common light-colored (felsic) minerals are the feldspars, feldspathoids, and silica or quartz. Common dark-colored (mafic) minerals include olivine, pyroxe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Igneous Rock
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 rock ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poikilitic Texture
Poikilitic texture refers to igneous rocks where large later-formed less perfect crystals ('oikocrysts') surround smaller early-formed idiomorphic crystals ('chadacrysts') of other minerals. A poikilitic texture is most easily observed in petrographic thin sections. In some rocks there seems to be little tendency for the minerals to envelop one another. This is true of many gabbros, aplites and granites. The grains then lie side by side, with the faces of the latter moulded on or adapted to the more perfect crystalline outlines of the earlier. Ophitic A variety of poikilitic texture, known as ophitic texture, is where laths of plagioclase are enclosed in pyroxene, olivine or other minerals. It is very characteristic of many diabases, in which large crystals of augite enclose smaller laths of plagioclase feldspar. Biotite and hornblende frequently enclose feldspar ophitically; less commonly iron oxides and sphene do so. In peridotites the "lustre-mottled" structure arises from pyro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hornblende
Hornblende is a complex silicate minerals#Inosilicates, inosilicate series of minerals. It is not a recognized mineral in its own right, but the name is used as a general or field term, to refer to a dark amphibole. Hornblende minerals are common in Igneous rock, igneous and metamorphic rocks. The general formula is . Physical properties Hornblende has a Mohs scale of mineral hardness, hardness of 5–6, a specific gravity of 3.0 to 3.6, and is typically an opaque green, dark green, brown, or black color. It tends to form slender prismatic to bladed crystals, diamond-shaped in cross section, or is present as irregular grains or fibrous masses. Its planes of cleavage (crystal), cleavage intersect at 56° and 124° angles. Hornblende is most often confused with the pyroxene series and biotite, biotite mica, which are also dark minerals found in granite and charnockite. Pyroxenes differ in their cleavage planes, which intersect at 87° and 93°. Hornblende is an inosilicate (cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diorite
Diorite ( ) is an intrusive rock, intrusive igneous rock formed by the slow cooling underground of magma (molten rock) that has a moderate content of silica and a relatively low content of alkali metals. It is Intermediate composition, intermediate in composition between low-silica (mafic) gabbro and high-silica (felsic) granite. Diorite is found in mountain-building belts (''orogens'') on the margins of continents. It has the same composition as the fine-grained volcanic rock, andesite, which is also common in orogens. Diorite has been used since prehistoric times as decorative stone. It was used by the Akkadian Empire of Sargon of Akkad for funerary sculptures, and by many later civilizations for sculptures and building stone. Description Diorite is an intrusive rock, intrusive igneous rock composed principally of the silicate minerals plagioclase feldspar (typically andesine), biotite, hornblende, and sometimes pyroxene. The chemical composition of diorite is Intermedia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
