Petford, N. and Koenders, M.A., 2001. Consolidation phenomena in
sheared granitic magma: effects of grain size and tortuosity.
Physics and Chemistry of the Earth, Part A: Solid Earth and
Geodesy, 26 (4-5), pp. 281-286. Full text not available from
this repository. Official URL:
http://www.sciencedirect.com/science?_ob=ArticleUR... Granitic
(and other) magmas with crystal contents between 50 and ca.70%
are expected to show dilatant behavior during deformation. The
grain size at which the magma has been crystallised is shown to
be relevant to the development of excess pore pressure at
continued shearing. The reigning pressure regime is compared to
the stresses required for fracturing of the skeletal elements.
At rates of loading in excess of average tectonic rates (≥ 10−14
s−1), shear-induced dilation in granitic magmas with high
solidosities (crystal contents>50%), can lead to fracture. The
available excess skeletal pressure at a given strain rate is a
function of two coupled parameters, grain size and tortuos