TY - CHAP
T1 - The ascent of felsic magmas in dykes
AU - Petford, Nick
AU - Lister, John R.
AU - Kerr, Ross C.
PY - 1994/3/1
Y1 - 1994/3/1
N2 - The results of a thermal and fluid-dynamical analysis are presented that allow geologists to estimate the critical dyke or fracture width (wc) necessary for the transport of felsic magma through the crust without control by solidification. The principal geological variables required to estimate wc are the magmatic viscosity (μ), the density and temperature contrasts (Δρ{variant} and ΔT) between magma and country rock, and the height of ascent H. The results show that for typical values of μ and Δρ{variant}, and for transport distances of 20 to 30 km, the critical dyke width is constrained to lie between about 2 and 20 m. © 1994.
AB - The results of a thermal and fluid-dynamical analysis are presented that allow geologists to estimate the critical dyke or fracture width (wc) necessary for the transport of felsic magma through the crust without control by solidification. The principal geological variables required to estimate wc are the magmatic viscosity (μ), the density and temperature contrasts (Δρ{variant} and ΔT) between magma and country rock, and the height of ascent H. The results show that for typical values of μ and Δρ{variant}, and for transport distances of 20 to 30 km, the critical dyke width is constrained to lie between about 2 and 20 m. © 1994.
UR - http://www.mendeley.com/research/ascent-felsic-magmas-dykes
U2 - 10.1016/0024-4937(94)90028-0
DO - 10.1016/0024-4937(94)90028-0
M3 - Chapter
SN - 0024-4937
T3 - LITHOS
SP - 161
EP - 168
BT - LITHOS
ER -