Interpretation of field relationships of diorites and associated rocks with particular reference to Northwest Guernsey, Channel Islands

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Authors:Topley, C. G.; Brown, M.; Power, G. M.
Author Affiliations:Primary:
Oxford Polytech., Dep. Geol. and Phys. Sci., Oxford, United Kingdom
Portsmouth Polytech., United Kingdom
Volume Title:Geological Journal
Source:Geological Journal, 17(4), p.323-343. Publisher: Wiley & Sons, Chichester-New York, United Kingdom. ISSN: 0072-1050
Publication Date:1982
Note:In English. 33 refs.; illus. incl. 1 table, geol. sketch map
Summary:Three rock-groupings were identified: a diorite group with different rock types related by fractionation; a later granodiorite group; and a latest inhomogeneous suite. The latest rocks formed by fractional crystallization coupled with disruption and partial digestion of earlier rocks. More basic margins to intrusive units may be unreliable for deducing the order of intrusion in diorite complexes. [C.M.B.H.]
Subjects:Differentiation; Diorites; Fractional crystallization; Genesis; Granites; Granodiorites; Igneous rocks; Magmas; Mineral composition; Petrology; Plutonic rocks; English Channel Islands; Europe; Guernsey; United Kingdom; Western Europe
Coordinates:N493000 N494500 W0023000 W0024500
Abstract Numbers:85M/3341
Record ID:1988061670
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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