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- W2017684843 abstract "The mineralogy, petrology, and fluid inclusion chemistry of two charnockite patches within a distance of 4-5 km of the Varberg magmatic charnockite intrusion, SW Sweden, are investigated and described utilizing SEM, EMPA, and fluid inclusion microthermometry. Garnet-clinopyroxene (890-930 degrees C), garnet-amphibole (600-800 degrees C), and garnet-biotite (670-860 degrees C) Fe-Mg exchange thermometry indicates high temperatures for charnockite Patch I compared to relatively lower garnet-orthopyroxene, garnet-amphibole, and garnet-biotite temperatures of 500 to 600 degrees C for charnockite Patch II. Plagioclase in the charnockitic patches tends to be more anorthitic and less albitic (X-An = 0.20, X-Ab = 0.76) than in the surrounding regional granitic gneiss (X-An = 0.13, X-Ab = 0.84). Replacement antiperthite is commonly found in unrelated plagioclase grains from either patch compared to the regional granitic gneiss where it is relatively rare. In either patch, K-feldspar is considerably less albitic (X-Kfs = 0.90-0.92, X-Ab = 0.05-0.10) compared to K-feldspar from the regional granitic gneiss. It can also be found as micro-veins along quartz grain rims. Both patches are dominated by clinopyroxene as opposed to orthopyroxene. Garnet, biotite, and amphibole and in both charnockite patches tend to have lower Fe and correspondingly higher Mg values compared with garnet, biotite, and amphibole from the surrounding regional granitic gneiss. Fluorapatite tends to be relatively enriched in Cl and depleted in (Y+REE) compared with fluorapatite from the regional granitic gneiss. Fluid inclusions in charnockite Patches I and II are dominantly carbonic similar to what is seen for the Varberg charnockite. In addition to quartz, relatively high-density carbonic inclusions are also preserved in garnet and in fluorapatite. It is presumed that pure carbonic fluids must have once coexisted with relic magmatic H2O-CO2-NaCl fluids at peak metamorphic conditions. The most likely scenario suggests that charnockite Patches I and II were formed during the later stages of crystallization of the Varberg charnockite magmatic body during which copious amounts of CO2-rich fluids with a brine (CaCl2-dominated) component were expelled into the country rock via pegmatoid segregations both within and in the immediate surroundings of the charnockite body. Patch I appears to represent the extension of a pegmatoid segregation, whereas Patch II appears to represent fluid-induced lower temperature, solid-state dehydration. Transport was facilitated via a system of tectonic fissures and fractures generated in the regional migmatized granitic gneiss during its emplacement. Within the scope of what is known, these two charnockite patches fall into the generally observed parameters for localized dehydration zones in general. (C) 2014 Elsevier B.V. All rights reserved. (Less)" @default.
- W2017684843 created "2016-06-24" @default.
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- W2017684843 date "2014-10-01" @default.
- W2017684843 modified "2023-09-27" @default.
- W2017684843 title "Localized, solid-state dehydration associated with the Varberg charnockite intrusion, SW Sweden" @default.
- W2017684843 cites W1664694419 @default.
- W2017684843 cites W179066036 @default.
- W2017684843 cites W1967485870 @default.
- W2017684843 cites W1970044193 @default.
- W2017684843 cites W1971844979 @default.
- W2017684843 cites W1972004926 @default.
- W2017684843 cites W1972717431 @default.
- W2017684843 cites W1975436931 @default.
- W2017684843 cites W1978443253 @default.
- W2017684843 cites W1983124314 @default.
- W2017684843 cites W1985877846 @default.
- W2017684843 cites W1987954487 @default.
- W2017684843 cites W1990564225 @default.
- W2017684843 cites W1991248289 @default.
- W2017684843 cites W1991549238 @default.
- W2017684843 cites W2002842352 @default.
- W2017684843 cites W2004919191 @default.
- W2017684843 cites W2006576973 @default.
- W2017684843 cites W2012532958 @default.
- W2017684843 cites W2017275175 @default.
- W2017684843 cites W2019204577 @default.
- W2017684843 cites W2020692794 @default.
- W2017684843 cites W2022558625 @default.
- W2017684843 cites W2023949103 @default.
- W2017684843 cites W2024921949 @default.
- W2017684843 cites W2027763109 @default.
- W2017684843 cites W2034671041 @default.
- W2017684843 cites W2039052178 @default.
- W2017684843 cites W2039364654 @default.
- W2017684843 cites W2039542496 @default.
- W2017684843 cites W2046050954 @default.
- W2017684843 cites W2046891619 @default.
- W2017684843 cites W2047842327 @default.
- W2017684843 cites W2049760464 @default.
- W2017684843 cites W2053618571 @default.
- W2017684843 cites W2054241867 @default.
- W2017684843 cites W2057692293 @default.
- W2017684843 cites W2058841017 @default.
- W2017684843 cites W2061244569 @default.
- W2017684843 cites W2067583939 @default.
- W2017684843 cites W2068532843 @default.
- W2017684843 cites W2070108059 @default.
- W2017684843 cites W2075054783 @default.
- W2017684843 cites W2078165173 @default.
- W2017684843 cites W2078177242 @default.
- W2017684843 cites W2078773837 @default.
- W2017684843 cites W2079580044 @default.
- W2017684843 cites W2079772117 @default.
- W2017684843 cites W2080046742 @default.
- W2017684843 cites W2080461060 @default.
- W2017684843 cites W2082261829 @default.
- W2017684843 cites W2088450895 @default.
- W2017684843 cites W2089620617 @default.
- W2017684843 cites W2095930280 @default.
- W2017684843 cites W2098065565 @default.
- W2017684843 cites W2106146079 @default.
- W2017684843 cites W2106301591 @default.
- W2017684843 cites W2109317287 @default.
- W2017684843 cites W2116673586 @default.
- W2017684843 cites W2120310281 @default.
- W2017684843 cites W2128383999 @default.
- W2017684843 cites W2131590321 @default.
- W2017684843 cites W2135979974 @default.
- W2017684843 cites W2154409346 @default.
- W2017684843 cites W2163403879 @default.
- W2017684843 cites W2164711061 @default.
- W2017684843 cites W2166125718 @default.
- W2017684843 cites W2167450488 @default.
- W2017684843 cites W2239701095 @default.
- W2017684843 cites W2314518426 @default.
- W2017684843 cites W2318289936 @default.
- W2017684843 cites W2330756480 @default.
- W2017684843 cites W2331233413 @default.
- W2017684843 cites W2336107025 @default.
- W2017684843 cites W2353870592 @default.
- W2017684843 cites W2468619839 @default.
- W2017684843 cites W2514193346 @default.
- W2017684843 cites W2601591941 @default.
- W2017684843 cites W2749356481 @default.
- W2017684843 cites W43379002 @default.
- W2017684843 cites W85505245 @default.
- W2017684843 cites W2464791874 @default.
- W2017684843 doi "https://doi.org/10.1016/j.precamres.2014.04.019" @default.
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