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The contact zone of the Rhum ultrabasic intrusion: evidence of peridotite formation from magnesia magmas

Greenwood, Richard; Donaldson, C. H. and Emeleus, C. H. (1990). The contact zone of the Rhum ultrabasic intrusion: evidence of peridotite formation from magnesia magmas. Journal of the Geological Society, 147(2) pp. 209–212.

DOI (Digital Object Identifier) Link: http://dx.doi.org/10.1144/gsjgs.147.2.0209
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Abstract

The Eastern Layered Series of the Rhum ultrabasic compkx formed in situ, and was not tectonically emplaced as previously suggested. Field relations along the contact show no evidence for the existence of a late 'Marginal Gabbro', instead peridotite and allivalite layers can be traced to within 2m of the surrounding partially melted
country rocks. Local preservation of a chilled margin to one peridotite layer indicates that the parental magma consisted of an olivine tholeiite liquid carrying approximately 19% (vol.) olivine crystals in suspension.

Item Type: Journal Article
Copyright Holders: 1990 The Geological Society of London
ISSN: 0016-7649
Academic Unit/Department: Science > Physical Sciences
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 21337
Depositing User: Richard Greenwood
Date Deposited: 14 May 2010 13:25
Last Modified: 02 Dec 2010 20:54
URI: http://oro.open.ac.uk/id/eprint/21337
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