A stable isotope study of serpentinization and metamorphism in the Highland Border Suite, Scotland, U.K.
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|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|
|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|
|Copyright Information:||GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom|
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