The Skaergaard Intrusion of East Greenland: Paradigms, problems and new Perspectives

Marian B. Holness, Troels F.D. Nielsen, Christian Tegner

Research output: Contribution to journalArticleResearchpeer-review

13 Citations (Scopus)

Abstract

The Skaergaard Intrusion of East Greenland is the quintessential example of low-pressure closed-system fractionation of basaltic magma. Field evidence of extensive layering and associated quasi-sedimentary structures, and the resultant 'cumulate' paradigm of crystal settling in magma chambers, has led to many long-standing controversies. Of particular significance is the lack of consensus about the microstructural record and the mechanisms by which interstitial liquid is expelled from solidifying crystal mushy zones. Skaergaard remains a cradle for new insights into igneous processes, with recent work highlighting the importance of separation of immiscible liquids on magma evolution.

Original languageEnglish
Pages (from-to)391-396
Number of pages6
JournalElements
Volume13
Issue number6
DOIs
Publication statusPublished - Dec 2017

Keywords

  • Cumulates
  • Fractionation
  • Gabbro
  • Skaergaard

Programme Area

  • Programme Area 4: Mineral Resources

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