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| metapelites and metagreywackes in western Tianshan, China: metamorphic evolution and tectonic implications...of Earth and Space Sciences, Peking University, China (lfzhang@pku.edu.cn) 2 Institute of Mineralogy and...metamorphic belt of western Tianshan in northwestern China is a rarely preserved oceanic UHP terrane which...metapelites and metagreywackes from the Habutengsu Valley and adjacent area within this belt contain quartz...metagreywackes; metapelites; western Tianshan, China. INTRODUCTION Since coesite was ïŹrst discovered |
 | Hunziker, D., Burg, J.-P., Moulas, E., Reusser, E., Omrani, J. (2017) Formation and preservation of fresh lawsonite: Geothermobarometry of the North Makran Blueschists, southeast Iran. Journal of Metamorphic Geology, 35 (8) 871-895 doi:10.1111/jmg.12259 | Journal (article/letter/editorial) |
| Cretaceous closure of the Tethys Ocean. The largest blueschist outcrop is a >1000 m thick coherent unit with...interlayered metabasalts and metavolcanoclastic rocks. Blueschist metamorphism is only incipient in coarse grained...metamorphic recrystallization. The low variance blueschist peak assemblage is glaucophane, lawsonite, titanite...and rutile assemblages before entering into the blueschist facies and finally following a retrograde path...metamorphism; counterclockwise P-T path 1. INTRODUCTION Blueschist-facies rocks are markers of fossil subduction |
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| Twenty-four samples (in the form of greenschist and blueschist polished stone tools from Hungarian Neolithic...collections and also greenschists and blueschist from outcrops) were investigated. The aim of this work...to our results, it is possible to distinguish blueschist from macroscopically similar greenschist polished...determined; it requires the study of samples from more outcrops. The investigation of ancient stone tools is only...geochemical research areas. Key-words: greenschist, blueschist, polished stone tools, non-destructive analysis |
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| Abstract. The compositions of sodic pyroxenes from blueschist metabasites in Northwest Turkey were investigated...compared with sodic pyroxenes from high-grade blueschist terrains and eclogites with special reference...ranging from 65% down to 30%. Epidote-garnet bearing high-grade blueschist metabasites of Syros on the...is almost entirely related to the appearance of epidote as an additional ferric ion bearing phase with...metabasites and metacherts. The eastern part of the blueschist belt in the region of Mihallicik was studied |
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| continental margin. Eclogites, blueschists and crossite epidote schists formed in the Saih Hatat window as a result... Arrows point to the locations of some of the outcrops of the metamorphic aureole after Searle and Malpas...(Goffe et o11988) -~- CROSSITE - ACTINOLITE - EPIDOTE (This sludy) REGION A I METAMORPHIC SOLE ...respectively; 'a' eclogites, blueschists and crossite epidote schists. 'b' porphyritic metabasites and crossite...less (Searle & Malpas 1980; Spray 1984). In many outcrops, the sole rocks have been completely detached |
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| Chinese Academy of Sciences, Guangzhou 510640, China. Orcid 0000-0001-6560-0654 2 ARC Centre of Excellence...best-preserved blueschist terranes in the worldâhave been comprehensively investigated. The blueschist samples...and apatite strongly controls Sr. Two groups of blueschist have different originsâenriched continent-derived...initial Sr-Nd-Pb isotopic results. Lawsonite in blueschist with enriched origin exhibits strong Th/La fractionation...raising the possibility of the involvement of blueschist facies mĂ©lange to explain the origin of Mediterranean |
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| strong dispersion. Benitoite occurs in altered blueschist within serpentinite. The gem crystals formed...within fractures as a result of the alteration of blueschist by hydrothermal fluids derived from the regional...named after the county, as well as the San Benito River, which runs through the property, and the nearby... benitoite is found exclusively in bodies of blueschist within serpentinite. During 1995, the senior...senior author conducted a detailed study of blueschist bodies throughout the New Idria district on behalf of |
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| creating the abnormal conditions required for blueschist generation was still missing. This mechanism...problems in this region than in the Circum-Pacific blueschist complexes, where the dynamic, steady-state plate...precollisional paleogeographic setting do the blueschist protoliths represent: oceanic crust, continental...Alpine-Himalayan blueschist complexes in the frame work of the above questions. BLUESCHIST FACIES The blueschist...blueschist facies is characterized by a unique series of dense minerals comprising sodic amphibole, lawsonite |
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| with blueschists is analogous to the ophiolite-blueschist assemblages recovered from the Mariana forearc...ophiolites presented in this paper are mostly based on co-operative field studies in Primorye (1993, 1998,...'""~"~"";Ei~"iralovaii!ii!~ ophiolitebelts ( N50" CHINA"!!~ Kengevayam' Nablyudeny from N to S)and\i:il...western extension of the Palaeozoic ophiolite-blueschist belt of the SW Japan-Primorye area is also shown...Samarka-Nadanhada terranes in Primorye and northeastern China (Kojima 1989). Palaeozoic ophiolites in southwestern |
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| metabasites are largely almandine. Pistacite rich epidote is found in metacherts coexisting with lawsonite...in the eastern part of the Northwest Turkish blueschist belt in the region of Mihalli~ik, and distinguished...and epidote-crossite with an increase in grade northwards. He also obtained ages for blueschist metamorphism...isolated small blueschist outcrops south of Tavsanh. Geology Throughout the NW Turkish blueschist/ultramafic...blueschist/ultramafic belt the outcrops are separated by an extensive Neogene cover. A large area (20 to 45 kin) of blueschists |
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| Greece. These formations, along with some ophiolite outcrops, have been variably emplaced onto the Pelagonian...in balanced amounts, defining low-temperature blueschist facies metamorphic conditions (~320-340 °C, Pâ9-10...over lizardite, suggesting medium-temperature blueschist facies metamorphism (~340â370 °C, Pâ10-11 kbar)...antigorite corresponding to medium or high temperature blueschist facies metamorphism (~360â400 °C, Pâ12 kbar)...Metaophiolites; metamorphism Exhumation; 39 40 41 1 Blueschist metamorphism; Retrograde ACCEPTED MANUSCRIPT |
