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15-631: [REDACTED] Look up 馬鞍山  or 马鞍山 in Wiktionary, the free dictionary. Ma On Shan may refer to: Ma On Shan (peak) (simplified Chinese: 马鞍山 ; traditional Chinese: 馬鞍山 ; lit. 'saddle peak'), a mountain in the New Territories of Hong Kong Ma On Shan (town) , a New Town in the New Territories on the foot of Ma On Shan mountain Ma On Shan line , now part of Tuen Ma line,

30-575: A continental arc or by convergence yielding continental collisions. Generally, the evolution to granitoid magmas requires a thermal disturbance to ascent though continental crust.   Most granitoids are generated from crustal anatexis , the partial melting of the crust;  however the mantle may contribute both heat and material.   Granitoids can occur coeval with volcanic rocks that have equivalent chemical composition (granite– rhyolite , syenite– trachyte , granodiorite – dacite etc.) however, these extrusive rocks are often eroded so just

45-493: A complete and unique characterization of the origin, compositional evolution, and geodynamic environment for the genesis of a granitoid. Accordingly, multiple granitoid classification systems have been developed such as those based on: geochemistry , modal content, emplacement depth, and tectonic regime . There are several generalizations that apply to the majority of granitoids. Typically, granitoids occur where orogeny thickens continental crust either by subduction yielding

60-795: A railway line in Hong Kong Ma On Shan station , an elevated train station in Hong Kong Ma On Shan Village , a historic mining village in Hong Kong See also [ edit ] All pages with titles beginning with Ma On Shan Ma'anshan (simplified Chinese: 马鞍山 ; traditional Chinese: 馬鞍山 ; pinyin: Mǎ'ānshān ), a city in Anhui Province, People's Republic of China Maanshan Nuclear Power Plant in Pingtung County, Taiwan Topics referred to by

75-607: Is different from Wikidata All article disambiguation pages All disambiguation pages Ma On Shan (peak) Beneath the west face of the mountain along Tolo Harbour , the Ma On Shan new town extension, administratively part of Sha Tin , is named after the hill. It ends north in Wu Kai Sha . Ma On Shan can be distinguished by the west face which looks like a saddle, and "Ma On Shan" can be translated as "horse saddle mountain". Nine streams flow down from Ma On Shan, with

90-416: The plutonic rocks outcrop.   Granitoids can form in all tectonic environments. There are numerous exceptions to these generalizations.   For example, granitoids can form in anorogenic environments , a granitoid source rock can be from the mantle (for example, at intraplate hotspots ) and the melting mechanism can be radiogenic crustal heat . This igneous rock -related article

105-748: The Chinese Lily ( Lilium brownii ) which is found on the mountain's eastern slope. A few types of wild orchid grow in the streams of Ma On Shan, including Hong Kong's most common orchid, the Bamboo Orchid , so called because its distinctive stem resembles bamboo. The natural environment of Ma On Shan is relatively undisturbed, so this valuable sanctuary gives shelter to many wildlife species. Common mammals are Chinese pangolin ( Manis pentadactyla ), Chinese porcupine ( Hystrix brachyura ), wild boar ( Sus scrofa ) and common muntjac ( Muntiacus muntjac ). The north and north-east slopes of The Hunch Backs and

120-521: The biggest located on the southwest slope of Ma On Shan, near Ma On Shan Village . A group of villages located east of the peak is named Shap Sze Heung and the harbour of Three Fathoms Cove . The saddle-like peaks of Ma On Shan is formed by volcanic rocks , much like many of the tallest mountains in Hong Kong, such as Tai Mo Shan . The base of the mountain is mostly formed by sedimentary rocks around 120 - 60 million years ago. The southeastern part of

135-544: The east slope of Ma On Shan, covering an area of 118 hectares, was designated as a Site of Special Scientific Interest in 1976. In the 1850s, the Wans, a Hakka family, established the Ma On Shan Village . They lived traditional lives of farming. Once iron mining became prominent on the mountain in the 1950s, the villagers slowly transitioned to make a living through mining. As farming was no longer necessary in Hong Kong at

150-446: The mountain consists of intruded rhyolite . Some shorter mountains in Hong Kong are formed by older Granitic rocks. The saddle shape of Ma On Shan was formed over the past 200 million years. Originally, Ma On Shan was a surface of sedimentary rocks covered by volcanic rocks (mainly tuffs ) from volcanic eruptions (about 160 mya ). The sedimentary and volcanic rocks were then folded into ridges (about 120 mya). Rhyolite rocks intruded

165-617: The ridge later (about 100 mya). The faulting in the ridges then lead to a more saddle-like shape (about 60 mya). The weathering process made the ridges and peaks smooth (about 60 mya - now). The north slope of Ma On Shan is mostly tree-covered, while the south slope is mainly shrubs and grasses. On these hostile volcanic hills, only hardy and highly adaptable plants survive. There are some rare flora species, including Rhododendron simsii , which blooms with red flowers in late March, and two other species of native Rhododendron . Rare and protected species of plants also grow on Ma On Shan including

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180-573: The same term [REDACTED] This disambiguation page lists articles associated with the title Ma On Shan . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Ma_On_Shan&oldid=1184213710 " Categories : Disambiguation pages Place name disambiguation pages Hidden categories: Articles containing simplified Chinese-language text Articles containing traditional Chinese-language text Short description

195-454: The three defining mineral groups (quartz, plagioclase, and alkali feldspar) need to be present for the rock to be called a granitoid, foid -bearing rocks, which predominantly contain feldspars but no quartz, are also granitoids. The terms granite and granitic rock are often used interchangeably for granitoids; however, granite is just one particular type of granitoid. Granitoids are diverse; no classification system for granitoids can give

210-535: The time, these villages were abandoned one by one. Iron mining on Ma On Shan started in the early 1900s. Its high-purity (60%) iron ore attracted many newcomers to live near Ma On Shan in the late 1940s. The number of these mining newcomers exceeded 5,000 in the 1950s, with annual output in the 1950s and 1960s exceeding 100,000 tonnes. During this peak in the mining of iron, most of the miners lived in Ma On Shan New Village. An extensive network of tunnels

225-728: Was built under the hill. However, in the 1970s, Japan’s demand for iron was reduced massively due to them building oil tankers. Therefore, the mining operations in Ma On Shan became unprofitable and uncompetitive. The iron mines were abandoned in 1976. Until 2006, there are still 30,000 tonnes of iron ore in Ma On Shan. Granitoid A granitoid is a generic term for a diverse category of coarse-grained igneous rocks that consist predominantly of quartz , plagioclase , and alkali feldspar . Granitoids range from plagioclase-rich tonalites to alkali-rich syenites and from quartz-poor monzonites to quartz-rich quartzolites . As only two of

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