1994
DOI: 10.1029/94jb00929
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Abstract: On the basis of measurements of bulk rock and phenocryst chemical compositions, phenocryst content, and estimation of water content and magma temperature, the magma viscosity of 44 dikes from Oki‐Dozen and Tango, southwest Japan, and Ocros, Peruvian Andes, was estimated to examine a relationship between viscosity and dike width. The results show that magma viscosity increases with dike width: mafic magmas with viscosities of 101–102 Pa s form dikes l m wide, while felsic magmas with viscosities of 106–107 Pa s… Show more

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Cited by 63 publications
(48 citation statements)
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“…Initial dyke thickness is assumed to be ∼100 m, consistent with typical values estimated for such magma viscosity (Wada, 1994).…”
Section: Control Of Local Stress Field On Eruption Dynamics and Intenmentioning
confidence: 97%
“…Initial dyke thickness is assumed to be ∼100 m, consistent with typical values estimated for such magma viscosity (Wada, 1994).…”
Section: Control Of Local Stress Field On Eruption Dynamics and Intenmentioning
confidence: 97%
“…A dike thickens with increase in the driving pressure, its size and viscosity of magma [Gudmundsson, 1990a[Gudmundsson, , 1990bRubin and Pollard, 1987;Wada, 1994]. Because the sheeted dikes are dominantly aphyric basalt, the difference in viscosity of intruding magmas would have been minimal.…”
Section: Discussionmentioning
confidence: 99%
“…The flexural wavelength L does not depend on magma physical properties and, in the elastic regime, l d ≤ 4 L. However, both the dike width a and overpressure gradient DP c /Z c tend to increase as magma composition becomes more evolved and viscosity increases. Indeed, observations and physical analysis show that mafic magmas with low viscosities (∼10 1 -10 2 Pa s) form dikes about 1 m wide whereas felsic magmas, with viscosities ∼ 10 6 -10 7 Pa s, form dikes of the order of several tens of meters to 100 m wide [Bruce and Huppert, 1989;Wada, 1994;Kerr and Lister, 1995].…”
Section: Intrusion Shape and Thicknessmentioning
confidence: 99%
“…[72] Dike width also increases with viscosity [Wada, 1994;Kerr and Lister, 1995]; Bruce and Huppert [1989] have shown that the critical dike width for magma propagation increases with viscosity to the power 1/4. Using a width a equal to 25 m for the feeder dike of lunar intrusions and 100 m for terrestrial felsic dikes (as well as other parameters values listed in Figure 10), a characteristic thickness for lunar laccoliths is 35 m; but is 190 m for terrestrial intrusions.…”
Section: Low-slope Domes On the Moonmentioning
confidence: 99%