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Rasaay
Raasay (; gd, Ratharsair) or the Isle of Raasay is an island between the Isle of Skye and the mainland of Scotland. It is separated from Skye by the Sound of Raasay and from Applecross by the Inner Sound, Scotland, Inner Sound. It is famous for being the birthplace of Scottish Gaelic literature, Gaelic poet Sorley MacLean, an important figure in the Scottish Renaissance. Traditionally the home of Clan Sweeney, Clan MacSween, the island was ruled by the Clan MacLeod, MacLeods from the 15th to the 19th century. Subsequently, a series of private landlords held title to the island, which is now largely in public ownership. Raasay House, which was visited by James Boswell and Samuel Johnson in 1773, is now a hotel, restaurant, bar and outdoor activity centre. Raasay means "Isle of the Roe Deer" and is home to an endemism, endemic subspecies of bank vole. The current Chief of the Island is Roderick John Macleod of Raasay. Geology and geography About north to south and ea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inverarish
Inverarish ( gd, Inbhir Àrais) is a village that is the main settlement of the Isle of Raasay, in the civil parish of Portree, in the council area of Highland (council area), Highland, Scotland. It is southeast of the ferry pier at Clachan, Raasay, Clachan. In 1961 it had a population of 100. History The name "Inverarish" is Gaelic/Norse and means "River mouth", the name contains both the Gaelic and Norse elements for the same feature. The village was established in 1912 for iron ore miners. It contains the remains of Baird & Co's ore trans-shipment station and the village was partly built by the company. Landmarks Inverarish has 2 churches, a community hall called Raasay Community Hall, a fire station, a museum called Raasay Heritage Trust museum, a post office, a primary school called Raasay Primary School and a shop called Raasay Community Stores. References Villages in the Inner Hebrides Populated places in Highland (council area) Raasay {{Highland-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subspecies
In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species have subspecies, but for those that do there must be at least two. Subspecies is abbreviated subsp. or ssp. and the singular and plural forms are the same ("the subspecies is" or "the subspecies are"). In zoology, under the International Code of Zoological Nomenclature, the subspecies is the only taxonomic rank below that of species that can receive a name. In botany and mycology, under the International Code of Nomenclature for algae, fungi, and plants, other infraspecific ranks, such as variety, may be named. In bacteriology and virology, under standard bacterial nomenclature and virus nomenclature, there are recommendations but not strict requirements for recognizing other important infraspecific ranks. A taxonomist decides whether ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ironstone
Ironstone is a sedimentary rock, either deposited directly as a ferruginous sediment or created by chemical replacement, that contains a substantial proportion of an iron ore compound from which iron (Fe) can be smelted commercially. Not to be confused with native or telluric iron, which is very rare and found in metallic form, the term ''ironstone'' is customarily restricted to hard, coarsely banded, non-banded, and non-cherty sedimentary rocks of post-Precambrian age. The Precambrian deposits, which have a different origin, are generally known as banded iron formations. The iron minerals comprising ironstones can consist either of oxides, i.e. limonite, hematite, and magnetite; carbonates, i.e. siderite; silicates, i.e. chamosite; or some combination of these minerals.U.S. Bureau of Mines Staff (1996) ''Dictionary of Mining, Mineral, & Related Terms.'' Report SP-96-1, U.S. Department of Interior, U.S. Bureau of Mines, Washington, D.C.Neuendorf, K. K. E., J. P. Mehl Jr., and J. A. ... [...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 limes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sandstones
Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicates) because they are the most resistant minerals to weathering processes at the Earth's surface. Like uncemented sand, sandstone may be any color due to impurities within the minerals, but the most common colors are tan, brown, yellow, red, grey, pink, white, and black. Since sandstone beds often form highly visible cliffs and other topographic features, certain colors of sandstone have been strongly identified with certain regions. Rock formations that are primarily composed of sandstone usually allow the percolation of water and other fluids and are porous enough to store large quantities, making them valuable aquifers and petroleum reservoirs. Quartz-bearing sandstone can be changed into quartzite through metamorphism, usually related to te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shales
Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4) and tiny fragments (silt-sized particles) of other minerals, especially quartz and calcite.Blatt, Harvey and Robert J. Tracy (1996) ''Petrology: Igneous, Sedimentary and Metamorphic'', 2nd ed., Freeman, pp. 281–292 Shale is characterized by its tendency to split into thin layers ( laminae) less than one centimeter in thickness. This property is called '' fissility''. Shale is the most common sedimentary rock. The term ''shale'' is sometimes applied more broadly, as essentially a synonym for mudrock, rather than in the more narrow sense of clay-rich fissile mudrock. Texture Shale typically exhibits varying degrees of fissility. Because of the parallel orientation of clay mineral flakes in shale, it breaks into thin layers, often splintery and usually parallel to the otherwise indistinguishable bedding ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jurassic
The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The Jurassic constitutes the middle period of the Mesozoic, Mesozoic Era and is named after the Jura Mountains, where limestone strata from the period were first identified. The start of the Jurassic was marked by the major Triassic–Jurassic extinction event, associated with the eruption of the Central Atlantic magmatic province, Central Atlantic Magmatic Province. The beginning of the Toarcian Stage started around 183 million years ago and is marked by an extinction event associated with widespread Anoxic event, oceanic anoxia, ocean acidification, and elevated temperatures likely caused by the eruption of the Karoo-Ferrar, Karoo-Ferrar large igneous provinces. The end of the Jurassic, however, has no clear boundary with the Cretaceous and i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lewisian Complex
The Lewisian complex or Lewisian gneiss is a suite of Precambrian metamorphic rocks that outcrop in the northwestern part of Scotland, forming part of the Hebridean Terrane and the North Atlantic Craton. These rocks are of Archaean and Paleoproterozoic age, ranging from 3.0–1.7 billion years ( Ga). They form the basement on which the Torridonian and Moine Supergroup sediments were deposited. The Lewisian consists mainly of granitic gneisses with a minor amount of supracrustal rocks. Rocks of the Lewisian complex were caught up in the Caledonian orogeny, appearing in the hanging walls of many of the thrust faults formed during the late stages of this tectonic event. Distribution The main outcrops of the Lewisian complex are on the islands of the Outer Hebrides, including Lewis, from which the complex takes its name. It is also exposed on several islands of the Inner Hebrides, small islands north of the Scottish mainland and forms a coastal strip on the mainland from near L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archean
The Archean Eon ( , also spelled Archaean or Archæan) is the second of four geologic eons of Earth's history, representing the time from . The Archean was preceded by the Hadean Eon and followed by the Proterozoic. The Earth Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's surfa ... during the Archean was mostly a water world: there was continental crust, but much of it was under an ocean deeper than today's ocean. Except for some trace minerals, today's oldest continental crust dates back to the Archean. Much of the geological detail of the Archean has been destroyed by subsequent activity. The Earliest known life forms, earliest known life started in the Archean. Life was simple throughout the Archean, mostly represented by shallow-water microbial mats called stromatolites, and the a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eilean Tigh
Eilean Tigh ( gd, Eilean Taighe) is a tidal island in the Sound of Raasay of Scotland, that lies between Rona and Raasay. Approximately in extent, the island was once settled and the ruins of various structures are still visible at the south end. "Eilean Tigh" is a Gaelic name that means "house island" or "home island". It is a rugged island and the coastline is largely cliff-lined and rocky. Eilean Tigh is connected to the northern tip of neighbouring Raasay at low tides by a rocky ledge that crosses Caol Eilean Tigh. Rona lies about away across the straits of Caol Rona at the centre of which is tiny Eilean an Fhraoich (English: heather island). On the Rona side are Garbh Eilean (rough island) and Eilean Seamraig. Eilean Fladday is south and Skye is some west across the Sound In physics, sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the ''recepti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eilean Fladday
Eilean Fladday (also Fladda) is a previously populated tidal island off Raasay, near the Isle of Skye, Scotland. Geography Eilean Fladday lies off the north west coast of Raasay, across Caol Fladday (Kyle Fladda), which dries at half-tide. Once a thriving crofting community, the island now only has three cottages which are used by the families who own them for about seven months a year. The population is recorded as 29 (1841), 51 (1891), 12 (1951) and 12 (1971). Five families lived there in the late 1920s. Their petition to Inverness County Council to build a road and footbridge was rejected. A subsequent appeal to the Education Department to provide a school, was successful only after a rate strike. Raasay crofter, Calum MacLeod (of Raasay), Calum MacLeod (who later built "Calum's Road") constructed a track from Torran to Fladda between 1949 and 1952. This did not stem the exodus from the island and the last families left Fladda in 1965. See also * List of islands of Scotl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Rona
Rona ( gd, Rònaigh), sometimes called South Rona to distinguish it from North Rona (a small uninhabited island to the northwest of Cape Wrath), is an inhabited island in the Inner Hebrides. It lies between the Sound of Raasay and the Inner Sound just north of the neighbouring island of Raasay and east of the Trotternish peninsula of Skye. It has a total area of and a population of 3. Geography and geology Rona is an extension northward of the ridge of Raasay. Its geology is Lewisian gneiss and the glaciated landscape is underlain by some of the oldest rocks in western Europe. Writing in the early 18th century, Martin Martin recorded that "this little isle is the most unequal rocky piece of ground to be seen anywhere: there is but very few acres fit for digging, the whole is covered with long heath, erica-baccifera, mertillus, and some mixture of grass; it is reckoned very fruitful in pasturage: most of the rocks consist of the hectic stone, and a considerable part of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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