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The timing of mantle and crustal events in South Namibia, as defined by SHRIMP-dating of zircon domains from a garnet peridotite xenolith of the Gibeon Kimberlite Province

Liati, Anthi; Franz, Leander; Gebauer, Dieter; Fanning, Christopher

Description

The Gibeon Kimberlite Province, southern Namibia, comprises numerous, 70-80 Ma old kimberlite pipes and dykes commonly containing abundant mantle and crustal xenoliths. We dated by SHRIMP II zircons from a garnet peridotite xenolith (Pipe Hanaus 1). The xenolith consists of garnet, orthopyroxene, clinopyroxene and, almost completely serpentinised, olivine. Crystallisation P-T conditions range between ca. 3.3 GPa, 910 °C (core composition of minerals) and ca. 3.5 GPa, 1000 °C (rim composition)....[Show more]

CollectionsANU Research Publications
Date published: 2004
Type: Journal article
URI: http://hdl.handle.net/1885/80362
Source: Journal of African Earth Sciences
DOI: 10.1016/j.jafrearsci.2004.07.054

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