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of 60
pro vyhledávání: '"Troels F.D. Nielsen"'
Publikováno v:
GEUS Bulletin, Vol 54, Pp 1-66 (2023)
The Skaergaard PGE-Au Mineralisation, alias the Platinova Reef, is hosted in a series of mineralisation levels within a suite of bowl-shaped macrorhythmic layers in the upper Middle Zone of the Skaergaard intrusion. The intrusion is exposed 68°N in
Externí odkaz:
https://doaj.org/article/447821179e6946529cbdc1daf531c272
Publikováno v:
GEUS Bulletin, Vol 44, Iss 0, Pp 1-8 (2020)
The Isortoq Giant Dykes in the Proterozoic Gardar Province, South Greenland, include the Isortoq South giant dyke and the Isortoq North giant dyke. The fine-grained Fe-Ti-V deposit hosted by the Isortoq South giant dyke, referred to as the Isortoq Fe
Externí odkaz:
https://doaj.org/article/fea711fb34f7447eac3df7f57bb58e51
Publikováno v:
Journal of Petrology. 60:1853-1880
Preferred and modelled bulk composition of the Skaergaard intrusion are compared to coeval basaltic compositions in East Greenland and found to relate to the second evolved cycle of Geikie Plateau Formation lavas and coeval Skaergaard-like dikes in m
Autor:
Jens C.Ø. Andersen, S M Weatherley, Troels F.D. Nielsen, N. S. Rudashevsky, V. N. Rudashevsky
Publikováno v:
Journal of Petrology. 60:1903-1934
The Skaergaard PGE–Au mineralization, aka the Platinova Reef, is a syn-magmatic Platinum Group Element (PGE) and gold (Au) mineralization that formed after crystallization of ∼74% of the bulk melt of the intrusion. It is hosted in a more than 600
Publikováno v:
Lithos. :106828
Publikováno v:
GEUS Bulletin, Vol 44, Iss 0, Pp 1-8 (2020)
The Isortoq Giant Dykes in the Proterozoic Gardar Province, South Greenland, include the Isortoq South giant dyke and the Isortoq North giant dyke. The fine-grained Fe-Ti-V deposit hosted by the Isortoq South giant dyke, referred to as the Isortoq Fe
Publikováno v:
Journal of Petrology. 59:589-612
Publikováno v:
Earth and Planetary Science Letters. 451:241-250
Mantle-derived CO 2 -rich magma ascends rapidly through the lithospheric column, supporting upward transport of large mantle-xenoliths and xenocryst (>30 vol%) loads to the (sub-)surface within days. The regional magmatism during which such pulses oc
Autor:
Terrence P. Mernagh, Troels F.D. Nielsen, Yakov Weiss, F.D. Troels, Vadim S. Kamenetsky, Maya B. Kamenetsky, Oded Navon
Publikováno v:
International Kimberlite Conference Extended Abstracts: 2008.
Autor:
Troels F.D. Nielsen
Publikováno v:
Geological Survey of Denmark and Greenland Bulletin. 35:59-62
For more than 80 years the Skaergaard intrusion, 68°N in southern East Greenland, has been a foremost natural laboratory for the study of the crystallisation and fractionation of basaltic magma. This process has been of prime importance in the evolu