Magnetic anisotropy produced by magma flow: theoretical model and experimental data from Ferrar dolerite sills (Antarctica)

• Published in: Geophysical Journal International
• Main Authors: Dragoni, Michele, Lanza, Roberto, Tallarico, Andrea
• Format: Text
• Language: English
• Published: Oxford University Press 1997
• Subjects: Articles; East Antarctica; Victoria Land; Bingham; Antarc*; Antarctica
• Online Access: http://gji.oxfordjournals.org/cgi/content/short/128/1/230; https://doi.org/10.1111/j.1365-246X.1997.tb04083.x

Volcanic rocks forming sills, dykes or lava flows may display a magnetic anisotropy derived from the viscous flow during their emplacement. We model a sill as a steady-state flow of a Bingham fluid, driven by a pressure gradient in a horizontal conduit. The magma velocity as a function of depth is c...