A strain section across part of the Caledonian orogen in W Ireland

Kelly, Thomas J.; Max, M. D.

doi:10.1144/gsl.sp.1979.008.01.29

Cited by 2 publications

(1 citation statement)

References 11 publications

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“…Shear zone 1 is the only zone for which any reliable data relating to change in the pre-strain volume of the rock are available. A plot of the degree of cross-cutting of pegmatitic granitic dykes to the older gneissose foliation within the Annagh Gneiss (Kelly & Max, 1979) shows that strain related to the shear zone can be traced for a t least 2 km to the SW of the contact between Annagh Gneiss and Scotchport Schist a t shear zone 1. For 2 k m and more SW of this contact these planar elements cross-cut a t angles of u p to 90".…”

Section: Geochemistrymentioning

confidence: 99%

Element mobility associated with syn‐metamorphic shear zones near Scotchport, NW Mayo, Ireland

Winchester¹,

Max²

1984

Journal Metamorphic Geology

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Three major blastomylonitic synmetamorphic (epidote amphibolite to mid amphibolite facies) shear zones are seen on the NW coast of the Mullet Peninsula in NW Mayo. These shear zones occur at the contacts of major structural units and in an imbricated slice where rocks of the Erris Complex are deformed and chemically modified. Chemical changes associated with individual shear zones have been deduced by comparing the compositions of various gneisses both within and adjacent to the shear zones. Compositional changes are different in theconstituent rock-types within each unit and many elements normally considered immobile have been selectively mobilized within the shear zones. Little evidence of wholesale metasomatic introduction of components into these shear zones was found to accompany the selective mobilization.

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Section: Geochemistrymentioning

confidence: 99%