Partial melting of the Appin Quartzite driven by fracture-controlled H2O infiltration in the aureole of the Ballachulish Igneous Complex, Scottish Highlands

Article Abstract:

Research was conducted to examine partial melting in the Appin Quartzite in the aureole of the Ballachulish Igneous Complex and to prove that melting was likely to be the consequence of infiltration of aqueous magmatic fluids along a series of fractures. The arkosic Appin Quartzite was previously believed to have melted only within a few meters of the intrusion. Textural investigation demonstrates that partial melting took place up to 500 m away from the vertical eastern contact.

Melting points, Melting, Feldspar

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P-T-X effects on equilibrium carbonate-H2O-CO2-NaCl dihedral angles: constraints on carbonate permeability and the role of deformation during fluid infiltration

Article Abstract:

A study of fluid-solid-solid dihedral angles in a NaCl-H2O-CO2-calcite-dolomite-magnesite system shows that permeability of carbonates to grain edge fluid flow occurs at low pressures or for fluids of restricted H2O-CO2-NaCl compositions, but geochemical studies shows results contrary to this. Increase in carbonate permeability is affected by deformation during fluid infiltration. The experimental method, the results and its discussion are given.

Observations, Permeability, Carbonate reservoirs

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Contrasting rock permeability in the aureole of the Ballachulish igneous complex, Scottish Highlands: the influence of surface energy?

Article Abstract:

Quartz-rich horizons in the Leven schist in the Ballachulish igneous complex in the Scottish Highlands would have been permeable to infiltration of aqueous fluids near the solidus, thus allowing the occurrence of extensive H2O-fluxed melting. Meanwhile, the Appin quartzite would have stayed impermeable to grain-edge flow. These affirm the observed differences in the extent of partial melting of the two lithogies.

Rock permeability

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