Tectonic implications of graphitized diamonds from the Ronda peridotite massif, southern Spain

G. R. Davies, P. H. Nixon, D. G. Pearson, M. Obata

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

Octahedral graphite aggregates are present in garnet pyroxenites from the Ronda peridotite massif, southern Spain. In the aggregates, basal {0001} planes of graphite are parallel to {111} of the octahedra, demonstrating that the graphite is pseudomorphic after a cubic mineral. The aggregates contain clinopyroxene inclusions that have a morphology atypical of a monoclinic phase demonstrating that the precursor diamond has imposed a cubic symmetry. A tectonic model is proposed to explain how diamond-facies rocks were emplaced into the crust on both sides of an orogen. -from Authors

Original languageEnglish
Pages (from-to)471-474
Number of pages4
JournalGeology
Volume21
Issue number5
DOIs
Publication statusPublished - 1 Jan 1993

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