Browsing by Author "Farnetani C.G."

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LAGRANGIAN STRUCTURES AND STIRRING IN THE EARTH'S MANTLE

Farnetani C.G.; Samuel H. (2003)

In this paper we investigate three Lagrangian methods that have been recently proposed to quantify mixing in chaotic and time-aperiodic geophysical flows. The analytical method proposed by Haller [e.g., G. Haller, Chaos ...
PETROLOGICAL MODELS OF MAGMA EVOLUTION AND DEEP CRUSTAL STRUCTURE BENEATH HOTSPOTS AND FLOOD BASALT PROVINCES

Farnetani C.G.; Richards M.A.; Ghiorso M.S. (1996)

Seismic experiments imaging the deep crustal structure beneath hotspot tracks and oceanic plateaus indicate unusually high seismic velocities (VP = 7.3–7.8 km/s) at the base of the crust. These high-velocity ‘layers’, up ...
THERMAL ENTRAINMENT AND MELTING IN MANTLE PLUMES

Farnetani C.G.; Richards M.A. (1996)

Thermal plumes from the core-mantle boundary (CMB) are thought to cause volcanic hotspots, and starting plumes, or plume ‘heds’, are thought to cause voluminous flood basalt events at the beginning of some hotspot tracks. ...
THERMOCHEMICAL CONVECTION AND HELIUM CONCENTRATIONS IN MANTLE PLUMES

Samuel H.; Farnetani C.G. (2003)

Compositionally heterogeneous material may exist in the lowermost mantle [van der Hilst and Karason, Science 283 (1999) 1885-1888]. Here we use a numerical model to investigate the dynamics of (i) the subducted oceanic ...

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