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dc.contributor.advisor SAJAR en_ZA
dc.contributor.author Author en_ZA
dc.contributor.author Krynauw, J.R.
dc.contributor.author Hunter, D.R.
dc.contributor.author Wilson, A.H.
dc.coverage.spatial Antarctica en_ZA
dc.coverage.spatial Marion Island
dc.date.accessioned 2018-08-23T07:54:39Z
dc.date.available 2018-08-23T07:54:39Z
dc.date.created 1971 en_ZA
dc.date.created 1984
dc.date.issued 1971 en_ZA
dc.date.issued 1984
dc.identifier.uri http://hdl.handle.net/123456789/7377
dc.description.abstract abstract en_ZA
dc.description.abstract Aspects of the geology and geochemistry of the layered rocks at Annandagstoppane (72�'S, 06發6'W) and Juletoppane (72�'S, 05�'W) in the Giaeverryggen, western Dronning Maud Land, are discussed. The mafic rocks in the two areas have been divided into a 'main suite' and a 'younger suite'. The main suite rocks comprise medium-grained gabbros, gabbronorites and anorthositic gabbros. Lenticular and discontinuous rhythmic layers are present. The younger suite comprises basaltic dykes at Annandagstoppane, and a dolerite sill and small pods of fine-grained gabbroic bodies at Juletoppane. Petrographic and geochemical aspects of main suite rocks in the two areas show close similarities, and indicate that pyroxene and plagioclase were the primocrysts in the orthocumulate assemblages. The preliminary results suggest that the Annandagstoppane and Juletoppane gabbroic rocks may either constitute a single layered intrusion, or reflect outcrops of intrusions of several ages, their magmas having been derived from compositionally similar mantle sources. The close chemical similarities of the younger suite with the main suite suggest that all the mafic phases in the two areas are genetically related. en_ZA
dc.description.sponsorship Sponsored by the National Research Foundation (South Africa) en_ZA
dc.description.sponsorship Sponsored by the National Research Foundation (South Africa)
dc.description.statementofresponsibility Antarctic Legacy of South Africa en_ZA
dc.description.statementofresponsibility Antarctic Legacy Project
dc.language en_ZA en_ZA
dc.language en_ZA
dc.publisher South African Journal of Antarctic Research en_ZA
dc.publisher South African Journal of Antarctic Research Vol 14
dc.relation.ispartof Vol 4 en_ZA
dc.rights Copyright en_ZA
dc.rights Copyright
dc.subject Antarctica en_ZA
dc.subject Antarctica
dc.subject Geology
dc.subject Western Dronning Maud Land
dc.title Title en_ZA
dc.title A note on the layered intrusions at Annandagstoppane and Juletoppane, western Dronning Maud Land
dc.type Articles en_ZA
dc.type Articles
iso19115.mdconstraints.uselimitation This item and the content of this website are subject to copyright protection. Reproduction of the content, or any part of it, other than for research, academic or non-commercial use is prohibited without prior consent from the copyright holder. en_za
iso19115.mdformat.name PDF en_za
iso19115.mdidentification.deliverypoint Antarctic Legacy of South Africa, Faculty of Science, Stellenbosch University. Private Bag X1, Matieland. Stellenbosch. South Africa. en_za
iso19115.mdidentification.electronicmailaddress antarcticlegacy@sun.ac.za en-za


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    Research Articles including the South African Journal on Antarctic Research

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