On the volcanology of the Gibeon Kimberlite Field, Namibia

Kurszlaukis, S. and Franz, L. and Lorenz, V.. (1998) On the volcanology of the Gibeon Kimberlite Field, Namibia. Journal of volcanology and geothermal research, 84 (3-4). pp. 257-272.

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Official URL: https://edoc.unibas.ch/81538/

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Kimberlite volcanism in the Upper Cretaceous Gibeon Kimberlite Field, southern Namibia, consisting of at least 42 diatremes and a number of associated dykes, is closely related to carbonatitic and ultrabasic volcanic and intrusive activity which occurred at the margin of the Field. The volcanology of the diatremes and dykes as well as their structural setting is reported here. Because of the paleohydrogeological setting, and since juvenile kimberlite occurring in dykes, intrusive plugs, and spherical lapilli is devoid of vesicles, a phreatomagmatic eruption mechanism is proposed for the genesis of the kimberlite diatremes. Karoo dolerite, basalt and sediment xenoliths in the diatremes provide evidence for the former extent of Karoo strata at the time of eruption.
Faculties and Departments:05 Faculty of Science > Departement Umweltwissenschaften > Ehemalige Einheiten Umweltwissenschaften > Theoretische Petrologie (De Capitani)
UniBasel Contributors:Franz, Leander
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:12 Apr 2021 14:13
Deposited On:12 Apr 2021 14:13

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