scholarly journals Fourth year of glaciological field work at Tasersiaq and Qapiarfiup sermia, West Greenland

1986 ◽  
Vol 130 ◽  
pp. 121-126
Author(s):  
O.B Olesen
Keyword(s):  
Field Work ◽  
Regional Mapping ◽  
West Greenland ◽  
Ice Cap

As part of the GGU programme for the regional mapping of the hydroelectric potential of West Greenland, glaciological and climatological investigations were continued at 'Amitsuloq' ice cap in 1985, while only glaciological measurements were made at Qapiarfiup sermia. The field programme at Qapiarfiup sermia was originally started in March 1981, whereas the permanent fieId station near 'Amitsuloq' ice cap (fig. 1) was first established in August of the same year. Briefreports of the work have been given by Olesen (1982), Olesen & Andreasen (1983), and Olesen (1985).

scholarly journals Further work on the early Archaean rocks of the Isukasia area, southern West Greenland

1982 ◽  
Vol 110 ◽  
pp. 49-54
Author(s):  
A.P Nutman
Keyword(s):  
Field Work ◽  
Regional Mapping ◽  
West Greenland ◽  
North East ◽  
The North ◽  
Starting Point ◽  
Supracrustal Belt ◽  
Geochemical Studies

Work in 1981 on the early Archaean rocks of the Isukasia area (Ailaart, 1976) was an integral part of GGU's mapping programme of northern Godthåbsfjord, Fiskefjord and adjacent areas to the north-east. Within the Isukasia area, there was dose co-operation with Minik Rosing who was making detailed studies of certain aspects of the Isua supracrustal belt. The object of this summer's field work was to complete the study of the supracrustal belt and the central gneisses that was started last year (Nutman et al., in press), and to see as much as possibIe of the gneisses between the supracrustal belt and 65°N (fig. 18). For the mapping of the supracrustal belt, manuscript maps drawn by J. H. Allaart were an invaluable starting point. Besides regional mapping, detailed studies were made of the nature of the lithological units and the relationships between them; see Table 4 for chronology. Suites of rocks were collected for isotopic and geochemical studies. In connection with this, H. Baadsgaard spent 10 days working with the author in the area, as a guest of GGu. The results reported here supplement those given by Nutman et al. (in press).

scholarly journals Establishment of a new survey station at Tasersiaq

1982 ◽  
Vol 110 ◽  
pp. 86-88
Author(s):  
O.B Olesen
Keyword(s):  
Regional Mapping ◽  
Field Station ◽  
West Greenland ◽  
Ice Cap ◽  
Potential Sources

As part of the GGU programme for the regional mapping of the hydroeleetric potential of West Greenland a new glaciological field station was established during August and September this year. The new station is situated at 66°6.5'N, 500 7.3'W near the long (73 km) and narrow (1.5-2 km) lake Tasersiaq just east of Sukkertoppen Ice Cap (fig. 30). With an estimated hydroelectric potential of more than 1000 GWh/year (GTO, September 1980) the Tasersiaq basin ranks as one of the largest potential sources of energy from the westcoast basins.

scholarly journals Field work on the very early Precambrian rocks of the Isua area, southern West Greenland

1974 ◽  
Vol 65 ◽  
pp. 49-54
Author(s):  
D Bridgwater ◽  
V.R McGregor
Keyword(s):  
Field Work ◽  
Regional Mapping ◽  
Early Precambrian ◽  
West Greenland ◽  
Precambrian Rocks ◽  
North East

During the regional mapping programme in the Godthåbsfjord region (see Bridgwater & McGregor, this report p. 39) D.B. and V.R.M. spent 14 days in the Isua area near the margin of the Inland lce, approximately 150 km north-east of Godthåb, in order to examine the Isua supracrustal suite and to determine its relation to the surrounding gneisses and to the geology of Godthåbsfjord.

scholarly journals Glaciological, glacier-hydrological and climatological investigations around 66°N, West Greenland

1983 ◽  
Vol 115 ◽  
pp. 107-111
Author(s):  
O.B Olesen ◽  
J.-O Andreasen
Keyword(s):  
Regional Mapping ◽  
West Greenland ◽  
Ice Caps ◽  
The Third ◽  
Ice Cap

As part of the GGU programme for the regional mapping of the hydroelectric potential of West Greenland, glaciological, glacier-hydrological and climatological investigations were carried out at three local ice caps near latitude 66° in West Greenland. Two of the ice caps, Sukkertoppen ice cap and 'Amitsuloq ice cap', contribute to the runoff from the Tasersiaq basin (fig. 41) while the third, Qapiarfiup sermia, drains into a smaller basin east of Sukkertoppen. Investigations in the Tasersiaq basin were started by GGU in August 1981 (Olesen, 1982) while glaciological measurements at Qapiarfiup serrnia were started in March 1981.

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.

Mantle xenoliths from Tertiary lavas and dykes on Ubekendt Ejland, West Greenland

1998 ◽  
pp. 152-154
Author(s):  
Stefan Bernstein ◽  
C. Kent Brooks
Keyword(s):  
Field Work ◽  
Mantle Xenoliths ◽  
Alkaline Basalt ◽  
Basalt Flow ◽  
Volcanic Province ◽  
East Greenland ◽  
Original Series ◽  
West Greenland ◽  
Ultramafic Xenoliths ◽  
Extensive Collection

NOTE: This article was published in a former series of GEUS Bulletin. Please use the original series name when citing this article, for example: Bernstein, S., & Brooks, C. K. (1998). Mantle xenoliths from Tertiary lavas and dykes on Ubekendt Ejland, West Greenland. Geology of Greenland Survey Bulletin, 180, 152-154. https://doi.org/10.34194/ggub.v180.5099 _______________ Mantle xenoliths were found in Tertiary alkaline (basanitic) lavas on Ubekendt Ejland in West Greenland in the mid 1970s by J.G. Larsen. Microprobe analyses of olivine, pyroxene and spinel in two mantle xenoliths, suggested that the xenoliths on Ubekendt Ejland are highly depleted and have high modal olivine contents, and low modal orthopyroxene and clinopyroxene (Larsen 1982). In this respect the mantle xenoliths from Ubekendt Ejland are very similar to the spinel harzburgites from Wiedemann Fjord, in the Tertiary volcanic province of East Greenland (Brooks & Rucklidge 1973; Bernstein et al. 1998). Larsen (1981) also reported dykes containing mantle nodules and a varied suite of cumulates and megacrysts, one of which has subsequently been dated to 34.1 ± 0.2 Ma (Storey et al. 1998) The basalt flow that carries the xenoliths is from what is defined as the Erqua Formation which occurs at the top of the lava succession in western Ubekendt Ejland (Fig. 1; Drever & Game 1948; Larsen 1977a, b). The basalts have not been dated, but are younger than 52.5 Ma, which is the date obtained for the underlying formation (Storey et al. 1998). During July 1997, we spent three weeks collecting xenoliths and prospecting for xenolith-bearing dykes in the Uummannaq district of central West Greenland. The field work resulted in an extensive collection of xenoliths from an alkaline basalt flow described by Larsen (1977a, b), as well as the discovery of a dyke carrying a large number of ultramafic xenoliths of various origins. 

Qaanaaq 2001: mineral exploration reconnaissance in North-West Greenland

2002 ◽  
pp. 133-143
Author(s):  
Bjørn Thomassen ◽  
Peter R. Dawes ◽  
Agnete Steenfelt ◽  
Johan Ditlev Krebs
Keyword(s):  
Mineral Exploration ◽  
Mining Industry ◽  
Field Work ◽  
Original Series ◽  
West Greenland ◽  
North West ◽  
Ice Caps ◽  
High Plateau ◽  
Set Up ◽  
Inland Ice

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., Dawes, P. R., Steenfelt, A., & Krebs, J. D. (2002). Qaanaaq 2001: mineral exploration reconnaissance in North-West Greenland. Geology of Greenland Survey Bulletin, 191, 133-143. https://doi.org/10.34194/ggub.v191.5141 _______________ Project Qaanaaq 2001, involving one season’s field work, was set up to investigate the mineral occurrences and potential of North-West Greenland between Olrik Fjord and Kap Alexander (77°10´N – 78°10´N; Fig. 1). Organised by the Geological Survey of Denmark and Greenland (GEUS) and the Bureau of Minerals and Petroleum (BMP), Government of Greenland, the project is mainly funded by the latter and has the overall goal of attracting the interest of the mining industry to the region. The investigated region – herein referred to as the Qaanaaq region – comprises 4300 km2 of ice-free land centred on Qaanaaq, the administrative capital of Qaanaap (Thule) municipality. Much of the region is characterised by a 500–800 m high plateau capped by local ice caps and intersected by fjords and glaciers. High dissected terrain occurs in Northumberland Ø and in the hinterland of Prudhoe Land where nunataks are common along the margin of the Inland Ice.

scholarly journals Field work in the Fiskenæsset area, southern West Greenland

1972 ◽  
Vol 45 ◽  
pp. 22-24
Author(s):  
F Kalsbeek
Keyword(s):  
Natural Waters ◽  
Field Work ◽  
Radiometric Dating ◽  
Systematic Mapping ◽  
West Greenland

During June to September the systematic mapping of the Fiskenæsset area was continued. Apart from the author the following geologists took part: L. Skov Andersen (Univ. of Copenhagen), C. R. L. Friend, B. J. Walton (Portsmouth Coll. of Tech.), T. O. Frisch (Univ. of Alberta), A. M. Hopgood (Univ.of St. Andrews), D. K. Hutt (Univ. of London), J. S. Myers (GGU), G. A. G. Nunn (Univ. of Liverpool), J. R. Tomas (Geol. Surv. Prague), G. Rivalenti (Univ. of Modena) and R. H. Williams (Univ. of Exeter). A study of the Na+ activity in natural waters, soils and vegetation was made by J. Bondam (see this report). R. T. Pidgeon (Scott. Res. React. Cent., East Kilbride) collected material in various parts of the area for radiometric dating.

scholarly journals Quaternary deposits between the Sukkertoppen ice cap and Nordre Strømfjord

1970 ◽  
Vol 28 ◽  
pp. 23-25
Author(s):  
A Weidick ◽  
N.W Ten Brink
Keyword(s):  
Land Area ◽  
The West ◽  
Quaternary Deposits ◽  
Sea Levels ◽  
West Greenland ◽  
Marine Deposits ◽  
Ice Cap

The area investigated during 1969 is located approximate1y between 66° 10' and 67° 30' N, and 50° and 52° W, the eastem half of the West Greenland ice-free land area transected by Søndre Strømfjord. The principal objectives of the work were to map and describe the glacial and emerged marine deposits for a Quatemary map at 1:500 000 scale, and to collect material for establishing a radiometric chronology of former ice-margin positions and sea levels. In order to study as large an area as possible, the investigations north of Søndre Strømfjord and Sondrestrom Airbase were conducted by A. Weidick, the area south of this by N. W. Ten Brink.

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.

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