scholarly journals Comparative note on the Precambrian basement of southern Inglefield Land and eastern Ellesmere Island

1981 ◽  
Vol 105 ◽  
pp. 14-18
Author(s):  
T Frisch
Keyword(s):  
Crystalline Basement ◽  
Ellesmere Island ◽  
Geological Survey ◽  
Precambrian Basement ◽  
West Greenland ◽  
North West ◽  
Comparative Note

A one-week visit to southem Inglefield Land, by the GGU motor cutter K. J. V. Steenstrup in conjunction with P. R. Dawes's geological studies in North-West Greenland, provided an opportunity to examine the Precambrian crystalline basement between Sunrise Pynt and Kap Alexander (fig. 4). The basement exposures face those on eastem Ellesmere Island, no more than 70 km away across Smith Sound, which were mapped by the writer in 1977 for the Geological Survey of Canada (Frisch et al., 1978). This note briefly compares the two areas.

Upernavik 98: reconnaissance mineral exploration in North-West Greenland

1999 ◽  
pp. 39-45 ◽  
Author(s):  
Bjørn Thomassen ◽  
Johannes Kyed ◽  
Agnete Steenfelt ◽  
Tapani Tukiainen
Keyword(s):  
Mineral Exploration ◽  
Mining Industry ◽  
Field Work ◽  
Geological Survey ◽  
Original Series ◽  
West Greenland ◽  
North West ◽  
One Year

NOTE: This article was published in a former series of GEUS Bulletin. Please use the original series name when citing this article, for example: Thomassen, B., Kyed, J., Steenfelt, A., & Tukiainen, T. (1999). Upernavik 98: reconnaissance mineral exploration in North-West Greenland. Geology of Greenland Survey Bulletin, 183, 39-45. https://doi.org/10.34194/ggub.v183.5203 _______________ The Upernavik 98 project is a one-year project aimed at the acquisition of information on mineral occurrences and potential in North-West Greenland between Upernavik and Kap Seddon, i.e. from 72°30′ to 75°30′N (Fig. 1A). A similar project, Karrat 97, was carried out in 1997 in the Uummannaq region 70°30′–72°30′N (Steenfelt et al. 1998a). Both are joint projects between the Geological Survey of Denmark and Greenland (GEUS) and the Bureau of Minerals and Petroleum (BMP), Government of Greenland, and wholly funded by the latter. The main purpose of the projects is to attract the interest of the mining industry. The field work comprised systematic drainage sampling, reconnaissance mineral exploration and spectroradiometric measurements of rock surfaces.

scholarly journals Field work in the north of the Ivisârtoq region, inner Godthåbsfjord, southern West Greenland

1983 ◽  
Vol 115 ◽  
pp. 49-56
Author(s):  
B Chadwick ◽  
M.A Crewe ◽  
J.F.W Park
Keyword(s):  
Field Work ◽  
Geological Survey ◽  
West Greenland ◽  
North West ◽  
The North ◽  
Field Investigations ◽  
New Findings ◽  
Host Rocks

The programme of field investigations in the north of the Ivisartoq region begun in 1981 by Chadwick & Crewe (1982) was continued in 1982. Julia Park began mapping the Taserssuaq granodiorite, its host rocks and the Ataneq fault in the north-west. Dur team was joined by D. Bellur, Geological Survey of India, nominally as an assistant. In this report we present only summary notes of new findings relevant to the interpretation of the geometry and chronology of this segment of the Archaean crust in southern West Greenland. We use the established terminology for the Archaean rocks of the Godthåbsfjord region.

scholarly journals Field investigations in the Precambrian terrain of the Thule district, North-West Greenland

1979 ◽  
Vol 95 ◽  
pp. 14-22
Author(s):  
P.R Dawes
Keyword(s):  
Field Work ◽  
Crystalline Basement ◽  
Field Mapping ◽  
West Greenland ◽  
North West ◽  
Field Investigations ◽  
Precambrian Terrain ◽  
Outer Coast ◽  
Three Phases

The field mapping of the Precambrian crystalline basement and overlying Thule Group of the Thule district aimed at the production of a 1:500000 map sheet between 75°15'N and 78°N was continued in July and August (fig. 5). The field work was split up, due to the varying availability of transport facilities, into three phases. (1) The charter of a Bell 204 helicopter from Thule Air Base enabled mapping in western Inglefield Land, and in the nunatak terrain of Prudhoe Land and Melville Bugt. (2) Investigation of the outer coast of western Melville Bugt was carried out with the aid of GGU cutter K. J. V. Steenstrup. (3) Detailed stratigraphical work in the middle and upper part of the Thule Group was based on foot traverses from Thule Air Base.

scholarly journals Eastern North Greenland 1993-1995 - a new 1:500 000 mapping project

1994 ◽  
Vol 160 ◽  
pp. 47-51
Author(s):  
N Henriksen
Keyword(s):  
Field Work ◽  
Geological Survey ◽  
East Greenland ◽  
West Greenland ◽  
North West ◽  
General Overview ◽  
North Greenland

The Geological Survey of Greenland (GGU) initiated in 1964 a 1:500000 mapping programme to produce a general overview of the onshore geology of all the ice-free areas of Greenland. So far 10 of a total of 14 planned map sheets have been published, and one additional sheet for which field work has been completed is under compilation. Most of Greenland is therefore now covered by map sheets of this series and only three areas remain to be covered: in North-West Greenland (sheet 6), in eastern North Greenland (sheet 9) and in East Greenland (sheet 11). Eastern North Greenland (map sheet no. 9; Fig. 1) is the target of the present project, with planned field work from 1993–1995. The first season (1993) was used for logistical preparation and geological reconnaissance in advance of the more intensive field work in the two following seasons (1994–95).

Archean and Proterozoic crust in North-West Greenland: evidence from Rb–Sr whole-rock age determinations

1988 ◽  
Vol 25 (9) ◽  
pp. 1365-1373 ◽  
Author(s):  
Peter R. Dawes ◽  
Ole Larsen ◽  
Feiko Kalsbeek
Keyword(s):  
Ellesmere Island ◽  
Isotopic Age ◽  
Sr Isotope ◽  
Isotopic Data ◽  
Igneous Complex ◽  
West Greenland ◽  
North West ◽  
Devon Island ◽  
Age Determinations

The geochronological understanding of the Precambrian crystalline shield of North-West Greenland (75–79°N) is at a rudimentary stage. Isotopic data from three major rock complexes—the Etah meta-igneous complex, the Kap York meta-igneous complex, and the Kivioq Havn gneiss and supracrustal complex—all show scatter indicating disturbed Rb–Sr isotope systems. This may reflect widespread reactivation of the crust in Proterozoic (Hudsonian) time. However, the majority of the samples define errorchrons that are regarded as geologically significant, and although the ages are poorly constrained, the data demonstrate the presence of both Archean and Proterozoic terranes.The Etah complex is Proterozoic in age (errorchron age ca. 1850 Ma), whereas the Kap York and Kivioq Havn complexes represent late Archean material (errorchron age ca. 2700 Ma). These ages compare favourably with isotopic age information from adjacent Canada in southeast Ellesmere Island and Devon Island, where correlatable Archean and Proterozoic rock complexes occur.

scholarly journals Rb-Sr whole-rock measurements of the Kap York meta-igneous complex, Thule district, North-West Greenland

1980 ◽  
Vol 100 ◽  
pp. 30-33
Author(s):  
F Kalsbeek ◽  
P.R Dawes
Keyword(s):  
Igneous Rocks ◽  
High Grade ◽  
Precambrian Basement ◽  
The South ◽  
Igneous Complex ◽  
Basic Composition ◽  
West Greenland ◽  
North West ◽  
Geological Map ◽  
Rock Suite

The Precambrian basement af the Kap York - Melville Bugt region is high-grade gneiss, composed af both orthogneisses and paragneisses, in which several units af metasedimcntary and meta-igneous rocks occur. The largest Occurrence af igneous rocks that has rctaincd magmatic aspect is the Kap York meta-igncous complcx which is composed af a rock suite af acidic to basic composition occupying thc wholc af the Kap York peninsula (fig. 8). On the Tectonic/Geological map of Greenland (Escher, 1970) the Kap York rocks were included in the Prolcrozoic Nagssugtoqidian orogenic complex which, elsewhere to the south in Greenland, yields K-Ar ages between 1790 and 1650 m.y.

scholarly journals Field mapping of the Precambrian basement in the Godthåbsfjord district, southern West Greenland

1973 ◽  
Vol 55 ◽  
pp. 29-32
Author(s):  
V.R McGregor ◽  
D Bridgwater
Keyword(s):  
Geological Survey ◽  
Precambrian Basement ◽  
Regional Mapping ◽  
Research Project ◽  
Joint Research ◽  
Field Mapping ◽  
West Greenland ◽  
Gneiss Complex ◽  
Joint Research Project

The first author continued his regional mapping, begun in 1965, in the Godthåbsfjord district between June and September. He joined the party of geologists from Exeter University (see Chadwick & Coe, this report) for a week at the start of the season in order to introduce this team into the main geological problems of the area. He also accompanied and advised W. F. Fahrig (see this report) who collected material from the gneiss complex as part of a joint research project with the Geological Survey of Canada on the geomagnetic properties of rocks from West Greenland.

scholarly journals Precambrian mineralising events in central West Greenland (66°–70°15´N)

2005 ◽  
Vol 7 ◽  
pp. 61-64 ◽  
Author(s):  
Henrik Stendal ◽  
Adam A. Garde
Keyword(s):  
Field Work ◽  
Geophysical Data ◽  
Geological Survey ◽  
Mineral Deposits ◽  
Precambrian Basement ◽  
Metamorphic Evolution ◽  
West Greenland ◽  
The Past ◽  
Geological Evolution

During the past decade the Geological Survey of Denmark and Greenland (GEUS) has carried out two major resource evaluations in the Precambrian basement terranes of South and West Greenland in order to locate potential areas of mineral deposits (Steenfelt et al. 2000, 2004; Stendal & Schønwandt 2003; Stendal et al. 2004). Based on geological field work and geochemical and geophysical data, these evaluations have assessed the interplay between the magmatic, tectonic and metamorphic evolution in the study areas and their mineralising events. As a result of the second of these evaluations it is now possible to outline a succession of mineralising events in the northern part of the Nagssugtoqidian orogen and in the Disko Bugt area of central West Greenland (Fig. 1), and relate them to the general Archaean and Palaeoproterozoic geological evolution of this region. However, uncertainties still exist concerning the age and detailed setting of many epigenetic mineralisations.

scholarly journals The Proterozoic sandstones between Heilprin Land and Mylius-Erichsen Land, eastern Greenland

1979 ◽  
Vol 88 ◽  
pp. 5-10
Author(s):  
J.D Collinson
Keyword(s):  
Crystalline Basement ◽  
West Greenland ◽  
North West ◽  
Sedimentary Cycle ◽  
North Greenland

The oldest sediments of eastern North Greenland are a series of sandstones, whose base is not seen and whose top is a surface of unconformity above which are sediments which pass without apparent break into rocks of Cambrian age. These lowest sandstones were initially included by Koch (1929) in his Thule Formation by comparison with sediments lying between crystalline basement and Cambrian sediments in North-West Greenland. They were subsequently designated as 'Thule Group' by Haller (1971), who regarded them as the autochthonous representatives of the pre-Carolinidian sedimentary cycle. The absence of any direct links with the Thule Basin leads to a preference here for the informal term Proterozoic sandstones.

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