Browsing by Author "Johnston A.D."
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Browsing by Author "Johnston A.D."
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Johnston A.D.; Schwab B.E. (2004)Earlier piston-cylinder experiments in our laboratory produced a collection of mantle melting run products at 1.0 GPa that have now been analyzed by ion probe for selected REE, Ti, Cr, Rb, Sr, Y, Zr, and Nb. Natural starting ...
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Skjerlie K.P.; Johnston A.D. (1993)Fluid-absent melting experiments on a biotite (20 wt.%) and hornblende (2 wt.%) bearing tonalitic gneiss were conducted at 6 kbar (900–975°C), 10 kbar (875–1075°C), and 14 kbar (950–975°C) to study melt productivity from ...
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Brugger C.R.; Johnston A.D.; Cashman K.V. (2003)An important control on magma rheology is the extent to which the magma crystallizes during ascent as a result of the effective undercooling created by volatile exsolution. To assess this undercooling, we need to know the ...
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Pickering-Witter J.; Johnston A.D. (2000)Experiments were conducted at 1 GPa on four starting materials to investigate the effects of variable mineral proportions on the melting systematics of compositionally fertile peridotitic assemblages. Starting materials ...
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Skjerlie K.P.; Johnston A.D. (1996)Dehydration-melting experiments from 10 to 20 kbar were performed on a metavolcanoclastic rock containing (in vol. %) biotite (16), amphibole (15) and epidote (13) in addition to plagioclase and quartz. At 10 and 12.5 kbar ...
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