Výsledky vyhledávání - "C. K. Brooks"

The Low-δ18O Late-Stage Ferrodiorite Magmas in the Skaergaard Intrusion: Result of Liquid Immiscibility, Thermal Metamorphism, or Meteoric Water Incorporation into Magma?

Autor: A. R. McBirney, H. P. Taylor, C. K. Brooks, Ilya N. Bindeman

Publikováno v: The Journal of Geology. 116:571-586

We report new laser fluorination oxygen isotope analyses of selected samples throughout the Skaergaard intrusion in East Greenland, particularly relying on ∼1-mg separates of the refractory, alteration-resistant minerals zircon, sphene, olivine, an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1090d8af485cc392082a549e41a903c3
https://doi.org/10.1086/591992

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40Ar–39Ar ages of intrusions in East Greenland: Rift-to-drift transition over the Iceland hotspot

Autor: Robert A. Duncan, C. K. Brooks, Christian Tegner, L.E. Heister, Stefan Bernstein

Publikováno v: Lithos. 101:480-500

Sixteen 40 Ar– 39 Ar ages are presented for alkaline intrusions to appraise prolonged post-breakup magmatism of the central East Greenland rifted margin, the chronology of rift-to-drift transition, and the asymmetry of magmatic activity in the Nort

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::38e9e4e2607ba0bf5fdb03ab374327be
https://doi.org/10.1016/j.lithos.2007.09.001

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Experimental constraints on the Skaergaard liquid line of descent

Autor: C. K. Brooks, Troels F.D. Nielsen, Peter Thy, Charles E. Lesher

Publikováno v: Lithos. 92:154-180

New experimental information permits a forward approach to modeling the liquid line of descent of the Skaergaard intrusion. A series of melting experiments on chilled margins of evolved tholeiitic and ferrobasaltic dikes associated with the intrusion

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8d2f0ace21529bb674ca114d968f5237
https://doi.org/10.1016/j.lithos.2006.03.031

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Petrogenesis of syenites at a rifted continental margin: origin, contamination and interaction of alkaline mafic and felsic magmas in the Astrophyllite Bay Complex, East Greenland

Autor: Morten S. Riishuus, David W. Peate, Christian Tegner, C. K. Brooks, J. R. Wilson, Tod E. Waight

Publikováno v: Riishuus, M S, Peate, D W, Tegner, C, Wilson, J R, Brooks, C K & Waight, T E 2005, ' Petrogenesis of syenites at a rifted continental margin: origin, contamination and interaction of alkaline mafic and felsic magmas in the Astrophyllite Bay Complex, East Greenland ', Contributions to Mineralogy and Petrology, vol. 149, pp. 350-371 .

The Astrophyllite Bay Complex in East Greenland (part of the Palaeogene North Atlantic Igneous Province) consists of an alkaline diorite plug, with detached trachyandesitic pillows, surrounded by co-magmatic syenite that was emplaced into Archaean ba

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4700641c14ba9ed1de8c8b8ea9273c47
https://doi.org/10.1007/s00410-005-0655-x

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Pyroclastic deposits within the East Greenland Tertiary flood basalts

Autor: C. K. Brooks, L. E. Heister, Dennis K. Bird, Peggy A. O'Day, Philip S. Neuhoff

Publikováno v: Journal of the Geological Society. 158:269-284

Stratigraphic, geochemical and mineralogical characterization of pyroclastic deposits on the Gronau West Nunatak of East Greenland indicates that both alkaline and basaltic tephras occurred during the eruption of flood basalts associated with the ope

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::90a013c7cb06706c47148d8b03de2cbf
https://doi.org/10.1144/jgs.158.2.269

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Tertiary alkaline volcanics in the Nunatak Region, Northeast Greenland: new observations and comparison with Siberian maymechites

Autor: Stefan Bernstein, C. K. Brooks, A.K. Higgins, A.G. Leslie

Publikováno v: Lithos. 53:1-20

Highly alkaline ultrabasic lavas which occur in the remote Nunatak Region of Northeast Greenland between latitudes 73°45′N and 74°25′N are approximately contemporaneous with the better known, voluminous Tertiary tholeiitic plateau basalts of th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::605be3341d38dca2e4f5f5f7fb3c7b2d
https://doi.org/10.1016/s0024-4937(00)00012-8

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Re–Os isotope geochemistry of Tertiary picritic and basaltic magmatism of East Greenland: constraints on plume–lithosphere interactions and the genesis of the Platinova reef, Skaergaard intrusion

Autor: Troels F.D. Nielsen, Louise R Frick, Reid R. Keays, David D Lambert, C. K. Brooks

Publikováno v: Lithos. 47:107-126

Re–Os abundance and isotopic studies on a small number of samples from the lowermost part of the East Greenland lava pile and the nearby Skaergaard intrusion show that picrite and ankaramite lavas tend to have high Os abundances and low Re/Os ratio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e3e29d6f1e97fe5879971f58ae74a08b
https://doi.org/10.1016/s0024-4937(99)00010-9

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40Ar39Ar geochronology of Tertiary mafic intrusions along the East Greenland rifted margin: Relation to flood basalts and the Iceland hotspot track

Autor: Christian Tegner, Robert A. Duncan, Dennis K. Bird, C. K. Brooks, Michael Storey, Stefan Bernstein

Publikováno v: Earth and Planetary Science Letters. 156:75-88

The East Greeland Tertiary Igneous Province includes the largest exposed continental flood basalt sequence within the North Atlantic borderlands. More than ten layered gabbro complexes, including the ∼55 Ma Skaergaard intrusion, and a large dolerit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9681e9c28a9160a7f3d473f2a75b6f5a
https://doi.org/10.1016/s0012-821x(97)00206-9

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