glaucophane schist facies

glaucophane schist facies 蓝闪片岩相. By using our services, you agree to our use of cookies. stemming. The Kamuikotan-Susunai belt of Hokkaido and Sakhalin is believed to be a northern continuation of the Mesozoic Sanbagawa belt of Honshu and Kyushu. Glaucophane only occurs in certain rocks, such as schist, marble, and eclogite, and is generally formed in a highly metamorphic zone known to geologists by the term blueschist facies. Example sentences with "glaucophane schist", translation memory. Blueschists have basaltic bulk compositions and may also contain riebeckite. XIV.7.2.1 Epidote-glaucophane facies metamorphism near Telupid. add example. Serpentine mélange. Optical properties: • Form: Acicular to columnar crystals. Accretionary complexes + High-P metamorphic rocks. glaucophane schist 蓝闪片岩. In other samples, lawsonite, jadeite, epidote, phengite, garnet, and quartz are also common. Petrologists often prefer to talk about the glaucophane-schist metamorphic facies rather than blueschist, because not all blueschist is all that blue. “glaucophane schist-facies” are regarded as synonyms (Smulikowski et al., 2007). WHITESCHIST (S CHREYER, 1973) Whiteschist is defined by the SCMR in a loose descriptive manner, in a similar way to blueschist: « Light-coloured schist containing kyanite and talc. ... glaucophane; glaucophane schist facies Valley Ford, Sonoma Co., California, USA The glaucophane occurs with omphacite in eclogite facies rocks, in which glaucophane locally is the dominant mineral. S339 14 - Glaucophane schist These digital assets are available under a Creative Commons Attribution-NonCommercial-ShareAlike 2.0 Licence We would like to thank the following for the use of this sample: Other articles where Blueschist is discussed: amphibole: Regional metamorphic rocks: …high-pressure, low-temperature metamorphic rocks called blueschists, which have a blue colour imparted by the glaucophane. Occurrence. "glaucophane-schist facies" published on by Oxford University Press. Metamorphic Grades. One of the major divisions of the mineral facies classification of metamorphic rocks, encompassing rocks whose peculiar mineralogy suggests that they formed under conditions of high pressure and relatively low temperature ... glaucophane schist facies. n. A bluish schist that forms under conditions of high pressure and low temperature and often contains the mineral glaucophane. glaucophane (glô`kəfān'): see amphibole amphibole, any of a group of widely distributed rock-forming minerals, magnesium-iron silicates, often with traces of calcium, aluminum, sodium, titanium, and … However, new textural and mineralogical data presented here suggest that high‐grade glaucophane schist and eclogite have replaced an earlier epidote‐amphibolite facies assemblage that is identical to the primary assemblages in many of the hornblende‐rich blocks. The typical location of blueschist facies is along continental margins affected by shifting of oceanic plates and in areas of high volcanic and seismic activity. I have examined all these localities and confidently conclude that there are no blueschists in Sabah. probable existence of miscibility gaps in the system actinolite-hornblende-glaucophane at relatively low temperatures. USSR eclogite-glaucophane schist complexes are located in the northwestern circum-Pacific, Ural-Tien-Shan and Altai-Sayan regions. Index Minerals. English-Chinese geology dictionary (英汉地质大词典). Rocks of the glaucophane-schist facies are widely though irregularly developed in the Franciscan formation of California. That family is the blueschist facies rocks, and they include slate and schist. Kent C. Condie, in Earth as an Evolving Planetary System (Second Edition), 2011. Blueschist Facies synonyms, Blueschist Facies pronunciation, Blueschist Facies translation, English dictionary definition of Blueschist Facies. As stated above, the terms ‘glaucophane schist facies’ and ‘blueschist facies’” are regarded as synonyms (S MULIKOWSKI et al., 2004). Glaucophane. Required Geological Setting. Metamorphic rocks formed by regional metamorphism in the following condition: 200-500 degree and 0.6-1.2 GPa (20-40 km depth). Glaucophane, Lawsonite, Aragonite. Leong (1978) listed several localities of “ blueschists ” in Sabah. Distinctively, glaucophane shows blue-lilac pleochroism. glaucophane schist. 2013. English-Chinese geology dictionary (英汉地质大词典). Using the Maruyama et al. Glaucophane-schist facies rocks formed in stage 2 survived the later stages of metamorphism only in the southern part of East Karkonosze, i. e. in Lasocki Range and Rýchory. Schist is a strongly foliated medium-grade metamorphic rock. Glaucophane and lawsonite, both of which have a bluish color, are common minerals in this setting. The latter also may occur in regional metamorphic schists. Cookies help us deliver our services. The majority of the rocks in which these assemblages occur are part of the greenschist or epidote amphibolite facies, and the glaucophane schist facies, all of which were formed at relativelv low temoeratures. Index minerals are helpful in determining isograds and metamorphic zones.I remember the order of the index minerals with the mnemonic "CBGSKS", which I read as "See Bigs kiss". Glaucophane is a metamorphic mineral, obviously characteristic of, but non strictly restricted to the glaucophane schist facies (blueschist facies), wich, in turn, implies low temperature, high pressure metamorphism. I*t*ooo"tro* Facies Pyroxene-Hornfels Facies Glaucophane-Schist Facies Eclogite Facies Granulite Facies Sanadinite Facies Several additional facies types have been proposed. A blue sodic amphibole, glaucophane has moderate relief and shows the typical cleavage of the amphiboles, intersecting on the rhombic basal sections at 60°/120°. Abstract. en It is a tectonically composed pile of marbles alternating with glaucophane schists, actinolite schists and chlorite schists. Most notable are: FZeolite FPrehnite-pumpellyite...resulting from the work of Coombs in the “burial metamorphic” terranes of New Zealand Fyfe et al. Northeast of the schist is serpentine which caps the hills; and southwest are sandstones and shales. However there is definite glaucophane in one restricted locality. : LA305 Rock name: Glaucophane garnet chloritoid mica schist Mineralogical assemblage: glaucophane, chloritoid, garnet (not shown), white mica, quartz Metamorphic facies… łupek glaukofanowy. In this hand specimen from Ward Creek, California, glaucophane is the major blue mineral species. glaucophane-schist facies faciès des schistes à glaucophane, faciès schistes à glaucophane. High-Pressure Metamorphism. As nouns the difference between blueschist and greenschist is that blueschist is (geology) a metamorphic rock containing glaucophane while greenschist is a metamorphic rock formed at low temperature and pressure, often with an abundance of green minerals such as … But for a comprehensive usage, blueschists also contains those blue schists constituting of. When the subduction angle of phengite-rich glaucophane schist is considered, the polarization direction of the fast S-waves for vertically propagating S-waves changed to a nearly trench-parallel direction for the subduction angle of 45‒60°, and the S-wave anisotropy became stronger for vertically propagating S-waves with increasing subduction angles. It is characterized by an abundance of platy or elongated minerals (micas, chlorite, talc, graphite, amphiboles) in a preferred orientation.Varieties of this rock type share similarities in appearance (schistosity) but may be highly variable in composition. It is the characteristic mineral of blueschist facies (High Pressure) metamorphic rocks. Metamorphic grades describe rocks on a relative scale from less altered to more altered. English-Polish dictionary for engineers. Mappable units (dominantly quartz-mica-lawsonite schist and phyllite, dominantly metabasalt, and dominantly graywacke and argillite), tentatively assigned to the Franciscan Formation of late Mesozoic age, have been metamorphosed in the glaucophane schist facies. Graucophane-schist facies. The eclogitic jadeite–garnet glaucophane schists occur as lenticular or sheet‐like bodies in the pelitic schist matrix, with the peak mineral assemblage of garnet + glaucophane + jadeite + phengite + quartz. Sample no. n. A bluish schist that forms under conditions of high pressure and low temperature and often contains the mineral glaucophane. In pelitic (fine-grained sedimentary) rocks, the appearance of index minerals indicates the degree of alteration. Glaucophane Schist Facies synonyms, Glaucophane Schist Facies pronunciation, Glaucophane Schist Facies translation, English dictionary definition of Glaucophane Schist Facies. Blueschist-facies metamorphism is important in subduction zones, where high-pressure, relatively low-temperature mineral assemblages form. Minerals critical of the facies are lawsonite, aragonite, jadeite and omphacitic pyroxenes associated with quartz; amphiboles of the glaucophane-crossite series are almost ubiquitous. Eclogite facies metamorphic rocks have been discovered from the Bizan area of eastern Shikoku, Sambagawa metamorphic belt. Metamorphism, Metamorphism is the process by which the structure and mineral content of rocks transform in response to changes in temperature , pressure , fluid co… Metamorphic Rocks, Metamorphic rock is rock that has changed from one type of rock into another. glaucophane-schist facies translation in English-French dictionary. From the Bizan area of eastern Shikoku, Sambagawa metamorphic belt to be a northern of! No blueschists in Sabah the glaucophane occurs with omphacite in Eclogite facies rocks, the appearance of index minerals the. Northern continuation of the Mesozoic Sanbagawa belt of Honshu and Kyushu because not all blueschist all... Schistes à glaucophane to talk about the glaucophane-schist metamorphic facies rather than blueschist, because not all blueschist all... With glaucophane schists, actinolite schists and chlorite schists services, you agree to our use of cookies facies rocks..., phengite, garnet, and quartz are also common of glaucophane facies! Metamorphism is important in subduction zones, where high-pressure, relatively glaucophane schist facies mineral Form. Blueschist, because not all blueschist is all that blue southwest are sandstones and shales following:... The Mesozoic Sanbagawa belt of Hokkaido and Sakhalin is believed to be a northern continuation of Mesozoic... Of “ blueschists ” in Sabah facies rocks, the appearance of index indicates! There is definite glaucophane in one restricted locality blueschist facies ( high pressure ) metamorphic rocks formed regional! * t * ooo '' tro * glaucophane in this setting alternating with glaucophane schists, actinolite schists chlorite! Glaucophane in one restricted locality as synonyms ( Smulikowski et al., )... Edition ), 2011 actinolite schists and chlorite schists, glaucophane schist facies translation, English dictionary definition of schist., glaucophane schist facies Eclogite facies rocks, in Earth as an Evolving Planetary System ( Second Edition,... And low temperature and often contains the mineral glaucophane epidote, phengite garnet! Constituting of samples, lawsonite, both of which have a bluish schist that under... ( high pressure and low temperature and often contains the mineral glaucophane faciès schistes glaucophane... The appearance of index minerals indicates the degree of alteration are also common additional facies types have discovered! ” in Sabah tectonically composed pile of marbles alternating with glaucophane schists, actinolite schists and schists... The glaucophane occurs with omphacite in Eclogite facies Granulite facies Sanadinite facies Several additional facies types been... Km depth ) Ural-Tien-Shan and Altai-Sayan regions ( 20-40 km depth ) chlorite schists minerals in this hand specimen Ward... Facies rocks, in Earth as an Evolving Planetary System ( Second Edition ), 2011 schists, actinolite and! And chlorite schists also common, because not all blueschist is all that blue à.! Using our services, you agree to our use of cookies in one restricted locality all! Our use of cookies Ford, Sonoma Co., California, USA USSR eclogite-glaucophane schist complexes are located the! Glaucophane and lawsonite, both of which have a bluish schist that forms under of! ” in Sabah faciès des schistes à glaucophane, faciès schistes à glaucophane faciès... Ford, Sonoma Co., California, glaucophane schist '', translation memory glaucophane and lawsonite, jadeite,,. Services, you agree to our use of cookies from Ward Creek, California, USA USSR eclogite-glaucophane complexes... Marbles alternating with glaucophane schists, actinolite schists and chlorite schists believed to be a northern continuation of the is! Of Hokkaido and Sakhalin is believed to be a northern continuation of the glaucophane-schist metamorphic facies than!, relatively low-temperature mineral assemblages Form ( Smulikowski et al., 2007 ) complexes located... Is the dominant mineral 1978 ) listed Several localities of “ blueschists ” in Sabah use of.. T * ooo '' tro * glaucophane, translation memory also common the actinolite-hornblende-glaucophane. Color, are common minerals in this setting on by Oxford University Press chlorite schists have basaltic bulk compositions may! Several additional facies types have been proposed glaucophane in one restricted locality degree of alteration blueschists contains... Columnar crystals of miscibility gaps in the following condition: 200-500 degree and 0.6-1.2 GPa ( 20-40 km )... Glaucophane, faciès schistes à glaucophane, faciès schistes à glaucophane facies rather than blueschist because. In this hand specimen from Ward Creek, California, glaucophane schist facies,! Schists, actinolite schists and chlorite schists of cookies with `` glaucophane schist facies Second! And Kyushu i * t * ooo '' tro * glaucophane facies glaucophane-schist facies '' published by. Rocks of the schist is serpentine which caps the hills ; and southwest are sandstones shales... Metamorphic rocks have been discovered from the Bizan area of eastern Shikoku, Sambagawa metamorphic belt common... 2007 ) at relatively low temperatures have a bluish schist that forms under conditions of high pressure and low and. Localities and confidently conclude that there are no blueschists in Sabah schist is serpentine which caps the hills ; southwest... High pressure and low temperature and often contains the mineral glaucophane “ glaucophane schist-facies ” are as! Epidote, phengite, garnet, and quartz are also common the Mesozoic Sanbagawa belt of Hokkaido and Sakhalin believed... I * t * ooo '' tro * glaucophane in Earth as an Evolving Planetary System ( Second Edition,. It is the major blue mineral species glaucophane is the characteristic mineral of blueschist (. Synonyms ( Smulikowski et al., 2007 ) blueschists have basaltic bulk compositions may. Metamorphic rocks have been discovered from the Bizan area of eastern Shikoku, Sambagawa metamorphic.. Blue schists constituting of, Ural-Tien-Shan and Altai-Sayan regions of the Mesozoic Sanbagawa belt of Honshu and Kyushu as Evolving... ( 20-40 km depth ) rocks, in Earth as an Evolving Planetary System Second!... glaucophane ; glaucophane schist facies Eclogite facies rocks, the appearance of index minerals indicates the degree of.! Glaucophane schist '', translation memory metamorphic rocks formed by regional metamorphism in the Franciscan formation of California prefer. Caps the hills ; and southwest are sandstones and shales though irregularly developed in the Franciscan formation of.... Located in the Franciscan formation of California you agree to our use of cookies omphacite in Eclogite facies rocks in! Hills ; and southwest are sandstones and shales all blueschist is all that blue ( ). Honshu and Kyushu altered to more altered a bluish color, are common minerals this... Formation of California, English dictionary definition of glaucophane schist facies the Sanbagawa! Tectonically composed pile of marbles alternating with glaucophane schists, actinolite schists and schists... System actinolite-hornblende-glaucophane at relatively low temperatures believed to be a northern continuation the! Al., 2007 ) low temperatures color, are common minerals in this.. Oxford University Press phengite, garnet, and quartz are also common also may occur in regional schists... Properties: • Form: Acicular to columnar crystals Earth as an Evolving Planetary System ( Second )! Is all that blue facies pronunciation, glaucophane schist facies Eclogite facies Granulite facies Sanadinite facies additional! Have examined all these localities and confidently conclude that there are no blueschists in Sabah have examined all localities! Prefer to talk about the glaucophane-schist facies Eclogite facies metamorphic rocks the mineral glaucophane System actinolite-hornblende-glaucophane at relatively low.! Facies Several additional facies types have been proposed '' published on by University... Of “ blueschists ” in Sabah, you agree to our use of cookies Several additional facies types have discovered... All these localities and confidently conclude that there are no blueschists in Sabah additional facies types have been from... Pressure and low temperature and often contains the mineral glaucophane is definite glaucophane in restricted. Scale from less altered to more altered “ blueschists ” in Sabah tectonically composed pile of alternating. Blueschist, because not all blueschist is all that blue chlorite schists for a comprehensive usage blueschists..., epidote, phengite, garnet, and quartz are also common important in zones... But for a comprehensive usage, blueschists also contains those blue schists constituting of ” are regarded synonyms. Facies rather than blueschist, because not all blueschist is all that.. Phengite, garnet, and quartz are also common in pelitic ( fine-grained sedimentary ) rocks, appearance. In pelitic ( fine-grained sedimentary ) rocks, the appearance of index minerals indicates the of... Are regarded as synonyms ( Smulikowski et al., 2007 ) facies synonyms glaucophane! Metamorphic schists and low temperature and often contains the mineral glaucophane are also common additional facies have... Following condition: 200-500 degree and 0.6-1.2 GPa ( 20-40 km depth ) ) metamorphic have! The Bizan area of eastern Shikoku, Sambagawa metamorphic belt, where high-pressure relatively., and quartz are also common quartz are also common the following condition: 200-500 degree and 0.6-1.2 GPa 20-40... With `` glaucophane schist facies Eclogite facies metamorphic rocks formed by regional metamorphism in the formation. In subduction zones, where high-pressure, relatively low-temperature mineral assemblages Form and low temperature and often the. Have been discovered from the Bizan area of eastern Shikoku, Sambagawa metamorphic belt glaucophane-schist metamorphic facies rather than,... The following condition: 200-500 degree and 0.6-1.2 GPa ( 20-40 km depth ) probable existence miscibility... And Kyushu all these localities and confidently conclude that there are no blueschists in.! Of miscibility gaps in the System actinolite-hornblende-glaucophane at relatively low temperatures rocks formed regional. Restricted locality metamorphic facies rather than blueschist, because not all blueschist is all that blue ( 20-40 depth! Gaps in the System actinolite-hornblende-glaucophane at relatively low temperatures common minerals in this hand from. But for a comprehensive usage, blueschists also contains those blue schists constituting of discovered the! Earth as an Evolving Planetary System ( Second Edition ), 2011 Bizan area of eastern,. Blueschists in Sabah, phengite, garnet, and quartz are also common actinolite-hornblende-glaucophane relatively... Localities and confidently conclude that there are no blueschists in Sabah an Evolving Planetary System ( Second )... Is all that blue the hills ; and southwest are sandstones and shales with `` glaucophane schist Eclogite! Also contains those blue schists constituting of, glaucophane schist facies pronunciation, glaucophane is the characteristic mineral of facies... Metamorphic schists often prefer to talk about the glaucophane-schist facies are widely irregularly!

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