Layering in the Ilimaussaq alkaline intrusion, south Greenland. Contribution to the Mineralogy of Ilimaussaq No. 82

Henning Sørensen, Lotte Melchior Larsen Larsen

    Publikation: Bidrag til bog/rapport/konferenceproceedingsBogkapitelForskningpeer review

    22 Citationer (Scopus)

    Abstrakt

    The Ilimaussaq alkaline intrusion in S Greenland provides examples of various types of igneous layering. Inch-scale layering occurs in the least differentiated rocks augite syenite and pulaskite and is probably caused by a nucleation-diffusion mechanism. Pegmatitic layering is found in the roof series of the agpaitic rocks (foyaite and naujaite) and is considered to have formed by upward concentration of volatiles under the downward crystallising roof. Isomodal layering is found in naujaite and especially in the latest rocks, the lujavrites. Mineral graded layering is found in the floor series of kakortokite and in some lujavrites. The mineralogy of the kakortokite series is described, and theories of formation of the layering reviewed.-from Authors

    OriginalsprogEngelsk
    TitelOrigins of igneous layering
    RedaktørerIan Parsons
    ForlagSpringer
    Sider1-28
    Antal sider28
    ISBN (Elektronisk)978-94-017-2509-5
    ISBN (Trykt)978-90-481-8435-4
    DOI
    StatusUdgivet - 1986

    Publikationsserier

    NavnNATO ASI Series
    ForlagSpringer
    Vol/bind196
    ISSN (Trykt)1389-2185

    Programområde

    • Programområde 4: Mineralske råstoffer

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