Matches in SemOpenAlex for { <https://semopenalex.org/work/W2038868909> ?p ?o ?g. }
- W2038868909 endingPage "n/a" @default.
- W2038868909 startingPage "n/a" @default.
- W2038868909 abstract "[1] Simple shear deformation experiments on three-phase, hydrous, haplogranitic magmas, composed of quartz crystals (24–65 vol.%), CO2-rich gas bubbles (9–12 vol.%) and melt in different proportions, were performed with a Paterson-type rock deformation apparatus. Strain rates from 5 · 10−6 s−1 to 4 · 10−3 s−1 were applied at temperatures between 723 and 1023 K and at pressure of 200 MPa. The results show that the three-phase suspension rheology is strongly strain rate dependent (non-Newtonian behavior). Two non-Newtonian regimes were observed: shear thinning (viscosity decreases with increasing strain rate) and shear thickening (viscosity increases with increasing strain rate). Shear thinning occurs in crystal-rich magmas (55–65 vol.% crystals; 9–10 vol.% bubbles) as a result of crystal size reduction and shear zoning. Shear thickening prevails in dilute suspensions (24 vol.% crystals; 12 vol.% bubbles), where bubble coalescence and outgassing dominate. At intermediate crystallinity (44 vol.% crystals; 12 vol.% bubbles) both shear thickening and thinning occur. Based on the microstructural observations using synchrotron radiation X-ray tomographic microscopy, bubbles can develop two different shapes: oblate at low temperature (<873 K) and prolate at high temperature (>873 K). These differences in shape are caused by different conditions of flow: unsteady flow, where the relaxation time of the bubbles is much longer than the timescale of deformation (oblate shapes); steady flow, where bubbles are in their equilibrium deformation state (prolate shapes). Three-phase magmas are characterized by a rheological behavior that is substantially different with respect to suspensions containing only crystals or only gas bubbles." @default.
- W2038868909 created "2016-06-24" @default.
- W2038868909 creator A5013952856 @default.
- W2038868909 creator A5014270906 @default.
- W2038868909 creator A5018255598 @default.
- W2038868909 creator A5040557757 @default.
- W2038868909 creator A5053738196 @default.
- W2038868909 creator A5058299343 @default.
- W2038868909 creator A5068447051 @default.
- W2038868909 creator A5082278883 @default.
- W2038868909 date "2012-05-01" @default.
- W2038868909 modified "2023-10-01" @default.
- W2038868909 title "Deformation experiments of bubble- and crystal-bearing magmas: Rheological and microstructural analysis" @default.
- W2038868909 cites W114428586 @default.
- W2038868909 cites W1807870242 @default.
- W2038868909 cites W1867091615 @default.
- W2038868909 cites W1878673916 @default.
- W2038868909 cites W1907629333 @default.
- W2038868909 cites W1941271744 @default.
- W2038868909 cites W1964762165 @default.
- W2038868909 cites W1966016940 @default.
- W2038868909 cites W1966049997 @default.
- W2038868909 cites W1966642063 @default.
- W2038868909 cites W1966877548 @default.
- W2038868909 cites W1968389139 @default.
- W2038868909 cites W1968768366 @default.
- W2038868909 cites W1969826052 @default.
- W2038868909 cites W1970474865 @default.
- W2038868909 cites W1973360963 @default.
- W2038868909 cites W1975257586 @default.
- W2038868909 cites W1976132681 @default.
- W2038868909 cites W1977329379 @default.
- W2038868909 cites W1977873148 @default.
- W2038868909 cites W1978930297 @default.
- W2038868909 cites W1979539069 @default.
- W2038868909 cites W1985441384 @default.
- W2038868909 cites W1985788974 @default.
- W2038868909 cites W1987629923 @default.
- W2038868909 cites W1988269975 @default.
- W2038868909 cites W1990660132 @default.
- W2038868909 cites W1992372075 @default.
- W2038868909 cites W1993994996 @default.
- W2038868909 cites W1994611591 @default.
- W2038868909 cites W1995378374 @default.
- W2038868909 cites W1996803292 @default.
- W2038868909 cites W1998136498 @default.
- W2038868909 cites W1999667797 @default.
- W2038868909 cites W2000246012 @default.
- W2038868909 cites W2003669648 @default.
- W2038868909 cites W2005938469 @default.
- W2038868909 cites W2006493549 @default.
- W2038868909 cites W2012366370 @default.
- W2038868909 cites W2013243273 @default.
- W2038868909 cites W2013544528 @default.
- W2038868909 cites W2016451495 @default.
- W2038868909 cites W2016548466 @default.
- W2038868909 cites W2016641925 @default.
- W2038868909 cites W2017854957 @default.
- W2038868909 cites W2019922981 @default.
- W2038868909 cites W2023563727 @default.
- W2038868909 cites W2025966825 @default.
- W2038868909 cites W2026025809 @default.
- W2038868909 cites W2030328711 @default.
- W2038868909 cites W2033230986 @default.
- W2038868909 cites W2034565568 @default.
- W2038868909 cites W2038012248 @default.
- W2038868909 cites W2038271789 @default.
- W2038868909 cites W2040953761 @default.
- W2038868909 cites W2043226230 @default.
- W2038868909 cites W2046083065 @default.
- W2038868909 cites W2046345979 @default.
- W2038868909 cites W2046899254 @default.
- W2038868909 cites W2047219447 @default.
- W2038868909 cites W2051372370 @default.
- W2038868909 cites W2055752909 @default.
- W2038868909 cites W2058326415 @default.
- W2038868909 cites W2062908625 @default.
- W2038868909 cites W2067856121 @default.
- W2038868909 cites W2067938533 @default.
- W2038868909 cites W2067987379 @default.
- W2038868909 cites W2068350323 @default.
- W2038868909 cites W2072352128 @default.
- W2038868909 cites W2073665512 @default.
- W2038868909 cites W2074514806 @default.
- W2038868909 cites W2076201344 @default.
- W2038868909 cites W2076923774 @default.
- W2038868909 cites W2077063989 @default.
- W2038868909 cites W2080107613 @default.
- W2038868909 cites W2080803297 @default.
- W2038868909 cites W2083777550 @default.
- W2038868909 cites W2085107735 @default.
- W2038868909 cites W2085285699 @default.
- W2038868909 cites W2085438407 @default.
- W2038868909 cites W2087177891 @default.
- W2038868909 cites W2090776051 @default.
- W2038868909 cites W2094597175 @default.
- W2038868909 cites W2095568673 @default.
- W2038868909 cites W2100971915 @default.