Metamorphic zones in the Anglesey blueschist belt and implications for the development of a Neoproterozoic subduction-accretion complex; discussion

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doi: 10.1111/j.1525-1314.2007.00709.x
Authors:Treagus, Jack
Author Affiliations:Primary:
University of Manchester, School of Earth, Atmospheric and Environmental Sciences, Manchester, United Kingdom
Volume Title:Journal of Metamorphic Geology
Source:Journal of Metamorphic Geology, 25(5), p.507-508. Publisher: Blackwell, Oxford, United Kingdom. ISSN: 0263-4929
Publication Date:2007
Note:In English. For reference to original see Kawai, T., Windley, B. F., Terabayashi, H., et al., Journal of Metamorphic Geology, Vol. 24, p. 591-602, 2006. 3 refs.; illus., incl. sketch map
Summary:This discussion relates to a paper by Kawai et al. [07M/2579] who analysed minerals in schistose mafic bodies that form sheets within dominant mica-chlorite schists in the Anglesey blueschist belt; the central high pressure zone is bordered on both sides by lower grade rocks. The zones and derived isograds are said to dip gently eastwards and the belt has an isoclinal antiform structure. The author of this discussion claims there is no evidence in the data from the metamorphic zones for the existence the easterly dipping isoclinal antiform. He concludes it would be premature from the evidence presented by Kawai et al.(2006) to relate the Anglesey blueschist belt to the geometry of a subduction-accretion complex. [H.F.S.]
Subsections:Metamorphic rocks; Metamorphism: regional, dynamic
Subjects:Accretion; Blueschist; Metamorphic belts; Metamorphic rocks; Neoproterozoic; Plate tectonics; Precambrian; Proterozoic; Schists; Subduction; Upper Precambrian; Zoning; Anglesey; Anglesey Wales; Europe; Great Britain; United Kingdom; Wales; Western Europe
Coordinates:N531000 N533000 W0040000 W0044500
Abstract Numbers:07M/3182
Record ID:2007065461
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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