Hot or cold emplacement of the Lizard Complex?

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doi: 10.1144/gsjgs.141.1.0037
Authors:Barnes, R. P.; Andrews, J. R.
Author Affiliations:Primary:
Inst. Geol. Sci., Edinburgh, United Kingdom
Other:
Univ. Southampton, Dep. Geol., United Kingdom
Volume Title:Journal of the Geological Society of London
Source:Journal of the Geological Society of London, 141(1), p.37-39. Publisher: Geological Society of London, London, United Kingdom. ISSN: 0016-7649
Publication Date:1984
Note:In English. 14 refs.; illus.
Summary:Regional prograde pumpellyite-actinolite-facies metamorphism has affected the Gramscatho group sediments and volcanic rocks structurally underlying the Lizard complex, Cornwall, England. Metamorphism occurred synchronously with the main penetrative deformation. There is no evidence of any increase in the regional gradient towards the Lizard complex or of any local thermal overprinting; it is concluded that the complex was emplaced in a cooled thrust sheet during a regional heat flow which produced very low-grade metamorphism; conditions of 250-350°C and several kbar are estimated. [R.A.H.]
Subjects:Composition; Faults; Interpretation; Low temperature; Low-grade metamorphism; Melange; Metamorphic rocks; Metamorphism; Metasedimentary rocks; Obduction; Ophiolite; P-T conditions; Paleozoic; Petrology; Temperature; Thrust faults; Cornwall England; England; Europe; Great Britain; United Kingdom; Western Europe; Gramscatho Group; Lizard Complex; Lizard Head; Meneage Formation; Pumpellyite actinolite facies
Coordinates:N495500 N501000 W0050500 W0052000
Abstract Numbers:84M/3449
Record ID:1985070112
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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