A stable isotope study of serpentinization and metamorphism in the Highland Border Suite, Scotland, U.K.

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doi: 10.1016/0016-7037(83)90129-1
Authors:Ikin, Nicholas P.; Harmon, Russell S.
Author Affiliations:Primary:
Univ. Coll., Dep. Geol., Cardiff, Wales, United Kingdom
South. Methodist Univ., Dep. Geol. Sci., United States
Volume Title:Geochimica et Cosmochimica Acta
Source:Geochimica et Cosmochimica Acta, 47(2), p.153-167. Publisher: Pergamon, Oxford, International. ISSN: 0016-7037
Publication Date:1983
Note:In English
Summary:D/H and 18O/16O ratios were measured for whole-rock samples and mineral separates from the mafic and ultramafic rocks of the Cambro-Ordovician Highland Border suite. The H- and O-isotopic compositions of these rocks record individual stages in a relatively complex 500 m.y.-old hydrothermal/metamorphic history. Lizardite serpentinites (D approx -105per mille; delta 18O 46.2per mille) record a pre-metamorphic history and indicate that parent harzburgites, dunites, and pyroxenites were serpentinized through low-T interaction with meteoric waters during cooling. The other rocks of the Highland Border suite record subsequent interaction with metamorphic fluids. Amphibolite-facies hornblende schists were produced through thrust-related (dynamothermal) metamorphism of spilitic pillow lavas. [C.M.B.H.]
Subjects:Amphibolite facies; D/H; Dynamic metamorphism; Facies; Geochemistry; Greenschist facies; Hydrogen; Hydrothermal alteration; Isotopes; Metamorphic rocks; Metamorphism; Metasomatism; O-18/O-16; Oxygen; Petrology; Processes; Regional metamorphism; Serpentinization; Stable isotopes; Europe; Great Britain; Scotland; United Kingdom; Western Europe; Highland Border Suite; Ratios
Abstract Numbers:84M/0631
Record ID:1983038423
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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