|Title||Ductile compaction of partially molten rocks: The effect of non-linear viscous rheology on instability and segregation|
|Publication Type||Journal Article|
|Year of Publication||2015|
|Authors||E Veveakis, K Regenauer-Lieb, and RF Weinberg|
|Journal||Geophysical Journal International|
|Pagination||519 - 523|
© The Authors 2014. Published by Oxford University Press on behalf of the Royal Astronomical Society. The segregation of melt from a linear viscous matrix is traditionally described by McKenzie's compaction theory. This classical solution overlooks instabilities that arise when non-linear solid matrix behaviour is considered. Here we report a closed form 1-D solution obtained by extending McKenzie's theory to non-linear matrix behaviours. The new solution provides periodic stress singularities, acting as high porosity melt channels, to be the fundamental response of the compacted matrix. The characteristic length controlling the periodicity is still McKenzie's compaction length δ<inf>c</inf>, adjusted for non-linear rheologies.
|Short Title||Geophysical Journal International|