Author: N. V. UssingPublisher:
ISBN:
Category : Geology
Languages : en
Pages : 430
Book Description
Geology of the Country Around Julianehaab, Greenland
Author: N. V. UssingPublisher:
ISBN:
Category : Geology
Languages : en
Pages : 430
Book Description
Geology of the Country Around Julianehaab, Greenland
Author: N. V. UssingGeology of the Country Around Julianehaab, Greenland
Author: Niels Viggo UssingGeology Around Julianehaab, Greenland
Author: N.V. UssingThe Geology of Qaersuarssuk Julianehaab District, South Greenland
Author: William Stuart WattGeology of the East Greenland Caledonides
Author: John HallerPublisher: Interscience Publishers
ISBN:
Category : Business & Economics
Languages : en
Pages : 448
Book Description
Sections include: I. Physiography; II. History of geological exploration; III. The pre-caledonian succession; IV. The caledonian orogeny; V. Post-caledonian block faulting and the transgressions of the Mesozoic Sea; VI. Cenozoic disturbances and igneous activity.
The Journal of Geology
Author: Thomas Chrowder ChamberlinPublisher:
ISBN:
Category : Electronic journals
Languages : en
Pages : 820
Book Description
Vols. for 1893-1923 includes section: "Reviews."
Ice Margin Features in the Julianehaab District, South Greenland
Author: Geological Map of Greenland 1:100 000
Author: Asger BerthelsenPublisher:
ISBN:
Category : Geology
Languages : en
Pages : 420
Book Description
Ilímaussaq Alkaline Complex, South Greenland
Author: Henning SorensenPublisher: Museum Tusculanum Press
ISBN: 9788763512718
Category : Science
Languages : en
Pages : 74
Book Description
The Ilimaussaq alkaline complex, South Greenland, the type locality of agpaitic nepheline syenites and of thirty minerals, among which arfvedsonite, eudialyte and sodalite, has been studied since 1806. The paper reviews the outcome of 200 years of geological investigations and presents an overview and a synthesis of the petrology of the complex. According to one model for the evolution of the complex, the nepheline syenites formed by consolidation of one magma batch in a closed system. The lujavrites were formed from the residual melts left after the formation of the roof series and the floor series and were sandwiched between these. A second model implies that the kakortokites and lujavrites formed from one or more separate magma pulses which intruded the already consolidated roof series rocks. This model is supported by new information on contact relations and especially on the petrology and geochemistry of a marginal pegmatitic fades that forms a rim around the kakortokite-lower aegirine lujavrite part of the complex. It consists of a massive-textured matrix intersected by pegmatites. The matrix was the first rock to form in the lowermost exposed part of the complex and gives information about the composition of the initial magma of the kakortokite-lujavrite sequence. It is concluded that the agpaitic rocks of the complex were formed from at least two successive magma injections, which formed respectively the roof series and the kakortokite-lujavrite sequence.