TY - JOUR
T1 - Ultralow viscosity of carbonate melts at high pressures
AU - Kono, Yoshio
AU - Kenney-Benson, Curtis
AU - Hummer, Daniel
AU - Ohfuji, Hiroaki
AU - Park, Changyong
AU - Shen, Guoyin
AU - Wang, Yanbin
AU - Kavner, Abby
AU - Manning, Craig E.
N1 - Funding Information:
We acknowledge Vincenzo Stagno and three anonymous reviewers for valuable comments. This study was performed at HPCAT (Sector 16), Advanced Photon Source (APS), Argonne National Laboratory. HPCAT operations are supported by DOE-NNSA under Award No. DE-NA0001974 and DOE-BES under Award No. DE-FG02– 99ER45775, with partial instrumentation funding by the NSF. The Advanced Photon Source is a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. The Paris–Edinburgh cell programme is partly supported by COMPRES. Y.W. acknowledges the NSF grant EAR-1214376. D.H. and C.E.M were supported by the Deep Carbon Observatory. A.K. acknowledges the NSF EAR-0969033 and the DOE-BES DE-FG02-10ER16136.
Publisher Copyright:
© 2014 Macmillan Publishers Limited. All rights reserved.
PY - 2014/10/14
Y1 - 2014/10/14
N2 - Knowledge of the occurrence and mobility of carbonate-rich melts in the Earth's mantle is important for understanding the deep carbon cycle and related geochemical and geophysical processes. However, our understanding of the mobility of carbonate-rich melts remains poor. Here we report viscosities of carbonate melts up to 6.2 GPa using a newly developed technique of ultrafast synchrotron X-ray imaging. These carbonate melts display ultralow viscosities, much lower than previously thought, in the range of 0.006-0.010 Pa s, which are ∼2 to 3 orders of magnitude lower than those of basaltic melts in the upper mantle. As a result, the mobility of carbonate melts (defined as the ratio of melt-solid density contrast to melt viscosity) is ∼2 to 3 orders of magnitude higher than that of basaltic melts. Such high mobility has significant influence on several magmatic processes, such as fast melt migration and effective melt extraction beneath mid-ocean ridges.
AB - Knowledge of the occurrence and mobility of carbonate-rich melts in the Earth's mantle is important for understanding the deep carbon cycle and related geochemical and geophysical processes. However, our understanding of the mobility of carbonate-rich melts remains poor. Here we report viscosities of carbonate melts up to 6.2 GPa using a newly developed technique of ultrafast synchrotron X-ray imaging. These carbonate melts display ultralow viscosities, much lower than previously thought, in the range of 0.006-0.010 Pa s, which are ∼2 to 3 orders of magnitude lower than those of basaltic melts in the upper mantle. As a result, the mobility of carbonate melts (defined as the ratio of melt-solid density contrast to melt viscosity) is ∼2 to 3 orders of magnitude higher than that of basaltic melts. Such high mobility has significant influence on several magmatic processes, such as fast melt migration and effective melt extraction beneath mid-ocean ridges.
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U2 - 10.1038/ncomms6091
DO - 10.1038/ncomms6091
M3 - Article
AN - SCOPUS:84919910219
SN - 2041-1723
VL - 5
JO - Nature Communications
JF - Nature Communications
M1 - 5091
ER -