Fluid flow paths and mechanisms of fluid infiltration in carbonates during contact metamorphism; the Beinn an Dubhaich aureole, Skye

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Authors:Holness, M. B.
Author Affiliations:Primary:
University of Edinburgh, Department of Geology and Geophysics, Edinburgh, United Kingdom
Volume Title:Journal of Metamorphic Geology
Source:Journal of Metamorphic Geology, 15(1), p.59-70. Publisher: Blackwell, Oxford, United Kingdom. ISSN: 0263-4929
Publication Date:1997
Note:In English. 41 refs.; illus., incl. 3 plates, geol. sketch maps
Summary:A textural study of marbles from this granite contact aureole has shown that mass transport by diffusion was probably negligible during the metamorphic event, and that the bulk of the carbonates reacted as a consequence of silica metasomatism, permitting the use of calc-silicate as a tracer for fluid infiltration pathways. Fracture-controlled infiltration was predominant in undeformed marbles, whereas pervasive infiltration took place during synmetamorphic ductile deformation. Some calcite marbles contain disseminated unoriented calc-silicates associated with neither fractures nor a ductile deformation fabric, consistent with an origin via infiltration of fluid along an interconnected grain-edge porosity. The inference of limited pervasive infiltration of undeformed carbonates is consistent with predictions based on experimentally determined fluid-solid dihedral angles. [R.A.H.]
Subjects:Aureoles; Carbonates; Contact metamorphism; Fluid phase; Infiltration; Marbles; Metamorphic rocks; Metamorphism; Metasomatism; Petrography; Textures; Europe; Great Britain; Hebrides; Highland region Scotland; Inner Hebrides; Inverness-shire Scotland; Isle of Skye; Scotland; United Kingdom; Western Europe; Beinn an Dubhaich Granite
Coordinates:N570000 N574000 W0054000 W0064500
Abstract Numbers:97M/3320
Record ID:1997018037
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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