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 Disko Bugt Project 1991, West Greenland

1992 ◽  
Vol 155 ◽  
pp. 36-41
Author(s):  
F Kalsbeek ◽  
F.G Christiansen
Keyword(s):  
Mineral Resources ◽  
Field Work ◽  
Project Work ◽  
Economic Potential ◽  
West Greenland ◽  
North East ◽  
The North ◽  
Field Investigations ◽  
Second Year ◽  
Proterozoic Basement

One of GGU's major field activities in 1991 took place in July and August in the Disko Bugt region of central West Greenland. This was the third year of field investigations under the 'Disko Bugt Project', planned for 1999–1992, with one summer's break in 1990. The project spreads over various activities and over two very different geological provinces: the Archaean-Proterozoic basement east and north-east of Disko Bugt, and the onshore part of the Cretaceous-Tertiary basin in the west, on Disko and the western part of Nugssuaq (Fig. 1). In 1989, the second year of the project, work was concentrated in the eastern basement part of the study area, and in 1991 this work was brought to conclusion. In 1992 field work (including a shallow core drilling campaign) will be concentrated in the sediments and volcanics on Nugssuaq and Svartenhuk Halvø to the north. The main aim of the Disko Bugt Project is to provide a background for the evaluation of the economic potential of the regional mineral resources, mainly in the Precambrian basement, and the hydrocarbon potential of the neighbouring basin offshore (see Kalsbeek, 1989. 1990).

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 Mapping of the Isukasia sheet, southern West Greenland

1983 ◽  
Vol 115 ◽  
pp. 20-29
Author(s):  
A.A Garde ◽  
R.P Hall ◽  
D.J Hughes ◽  
S.B Jensen ◽  
A.P Nutman ◽  
...  
Keyword(s):  
Field Work ◽  
Late Archaean ◽  
West Greenland ◽  
North East ◽  
The North ◽  
Base Camp ◽  
Geophysical Investigations ◽  
Set Up

Field work for the Isukasia map sheet north of Godthåbsfjord, started in 1981 (Allaart et al., 1982), was continued in 1982. A tent base camp was set up at the fjord Kangiussaq both summers. In 1982 seventeen fjeld teams and the glaciological station Qamanârssup sermia were supplied from the base by the GGU cutter J. F. Johnstrup and by a Jet Ranger helicopter based in Kangiussaq. Twelve mapping geologists worked on the two map sheets Ivisartoq and Isukasia, and five teams carried out ore geological, geochemical and geophysical investigations (see Appel, Chadwick et al., Jensen & Secher, and Secher, this volume). The field work was carried out from June 20th to August 28th. The Isukasia map sheet is situated north-east of the head of Fiskefjord, around the lake Taserssuaq. To the east it is bounded by the Inland lee, from which the glacier Sarqap sermia enters Taserssuaq. Most of the area is a lake strewn, undulating plateau at elevations between 500 and 800 m. Outcrops are generally good aIthough there are some Quaternary boulder fields, the largest of whieh extends over some 25 km2 in the north-east corner of the map sheet. The north-north-east trending Ataneq fauIt zone (see below), which oeeurs some 25 km east of Taserssuaq, separates an area of early Archaean rocks (induding the Isua supracrustals) from rocks to its west of probable late Archaean age. The younger rocks make up the bulk of the Isukasia map sheet.

The Archaean Atâ intrusive complex (Atâ tonalite), north-east Disko Bugt, West Greenland

1999 ◽  
pp. 103-112
Author(s):  
Feiko Kalsbeek ◽  
Lilian Skjernaa
Keyword(s):  
Intrusive Complex ◽  
The South ◽  
Original Series ◽  
Early Proterozoic ◽  
West Greenland ◽  
North East ◽  
The North ◽  
Southern Border ◽  
Area North ◽  
Igneous Layering

NOTE: This article was published in a former series of GEUS Bulletin. Please use the original series name when citing this article, for example: Kalsbeek, F., & Skjernaa, L. (1999). The Archaean Atâ intrusive complex (Atâ tonalite), north-east Disko Bugt, West Greenland. Geology of Greenland Survey Bulletin, 181, 103-112. https://doi.org/10.34194/ggub.v181.5118 _______________ The 2800 Ma Atâ intrusive complex (elsewhere referred to as ‘Atâ granite’ or ‘Atâ tonalite’), which occupies an area of c. 400 km2 in the area north-east of Disko Bugt, was emplaced into grey migmatitic gneisses and supracrustal rocks. At its southern border the Atâ complex is cut by younger granites. The complex is divided by a belt of supracrustal rocks into a western, mainly tonalitic part, and an eastern part consisting mainly of granodiorite and trondhjemite. The ‘eastern complex’ is a classical pluton. It is little deformed in its central part, displaying well-preserved igneous layering and local orbicular textures. Near its intrusive contact with the overlying supracrustal rocks the rocks become foliated, with foliation parallel to the contact. The Atâ intrusive complex has escaped much of the later Archaean and early Proterozoic deformation and metamorphism that characterises the gneisses to the north and to the south; it belongs to the best-preserved Archaean tonalite-trondhjemite-granodiorite intrusions in Greenland.

scholarly journals Notes on some Lower Palaeozoic to Tertiary faunas from eastern North Greenland

1974 ◽  
Vol 65 ◽  
pp. 18-23
Author(s):  
J.S Peel ◽  
P.R Dawes ◽  
J.C Troelsen
Keyword(s):  
Field Work ◽  
The South ◽  
Initial Field ◽  
North East ◽  
The North ◽  
Lower Palaeozoic ◽  
North Greenland

The north-east 'corner' of Greenland is geologically probably the least known region in North Greenland. Various expeditions have visited the coastal parts but geological detail, particularly faunal information, has remained surprisingly scarce. Initial field work by Koch (1923, 1925) and Troelsen (1949a, b, 1950) showed that a Precambrian to Silurian section - unfolded in the south, folded in the north - was unconformably overlain by a Carboniferous to Tertiary section, now referred to as the Wandel Sea basin (Dawes & Soper, 1973).

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 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 The geology of the north-eastern corner of Greenland - photogeological studies and 1993 field work

1994 ◽  
Vol 161 ◽  
pp. 21-33
Author(s):  
H.F Jepsen ◽  
J.C Escher ◽  
J.D Friderichsen ◽  
A.K Higgins
Keyword(s):  
Field Work ◽  
Tectonic Activity ◽  
Mobile Belt ◽  
North East ◽  
The North ◽  
Upper Proterozoic ◽  
North Eastern ◽  
Field Season ◽  
Upper Boundary ◽  
Middle Proterozoic

Late Archaean and Early Proterozoic crust-forming events in North-East and eastern North Greenland were succeeded by Middle Proterozoic sedimentation and volcanic activity; Late Proterozoic through Tertiary sedimentation was interrupted by several periods of tectonic activity, including the Caledonian orogeny in East Greenland and the Mesozoic deformation of the Wandel Hav mobile belt. Photogeological studies helped pinpoint areas of special interest which were investigated during the short 1993 field season. Insights gained during field work include: the nature of the crystalline basement terrain in the Caledonian fold belt, redefinition of the upper boundary of the Upper Proterozoic Rivieradal sandstones, revision of Caledonian nappe terminology, and the northern extension of the Caledonian Storstrømmen shear zone.

Seminar on Social Research in the North-East African Region

1967 ◽  
Vol 5 (2) ◽  
pp. 279-279
Author(s):  
I. M. Lewis
Keyword(s):  
Social Research ◽  
Field Work ◽  
Social Organisation ◽  
East African ◽  
African Region ◽  
Attitudes And Practices ◽  
North East ◽  
The North ◽  
The Social ◽  
University College London

This seminar was held at the Institute of Ethiopian Studies, under the general chairmanship of Dr I. M. Lewis of University College, London. It was organised by Dr Richard Pankhurst and ProfessorJ. Comhaire, with financial assistance from the British Ministry of Overseas Development. The seminar was attended by anthropologists currently engaged in field-work and by members of the Haile Selassie I University's Faculties of Arts, Law, Medicine, Business Administration, and the Institute of Ethiopian Studies, as well as staff of the Ministry of Community Development and Public Health. A number of visiting scholars, including Professor V. L. Grottanelli, participated in the meeting. Reports were received on field-work in Somalia and the Sudan as well as in Ethiopia: and the following papers were given: Dr D. Hecht on ‘Sacred Kingship in Africa’Fekadu Gedamu on ‘The Social Organisation of the Kistane Gurage’; J. Stauder on ‘The Social Organisation of the Mahangir’Dr. M. Lewis on ‘Possession Cults in Northern Somalia’A. Orent on ‘The Doce Cult in Kaffa’Virginia Luling on ‘Spirit-possession Cults in Mogadiscio’Terefe Walde Tsadik on ‘The Muyat Cult in Shoa’R. Hallpike on ‘Status of Craftsmen among the Konso’M. Cittadini on ‘Kunama Marriage’and J. Lisowski on ‘Biometrics of N.E. African Migrations’. Development papers were given by P. Sand on ‘Law as a Factor of Social Change’G. Savard on ‘Social Factors in Development’M. de Young on ‘Markets in Ethiopia’S. Messing on ‘Medical Attitudes and Practices in Ethiopia’and R. Bahar on ‘Rural Housing in Ethiopia’.

scholarly journals International field work on Archaean gneisses in the Godthåbsfjord-Isua area, southern West Greenland

1979 ◽  
Vol 95 ◽  
pp. 66-71
Author(s):  
D Bridgwater ◽  
J.H Allaart ◽  
H Baadsgaard ◽  
K.D Collerson ◽  
I Ermanovics ◽  
...  
Keyword(s):  
Field Work ◽  
University Of Maryland ◽  
West Greenland ◽  
Main Research ◽  
Crustal Rocks ◽  
The North ◽  
Geological Surveys ◽  
The United Kingdom ◽  
The Usa ◽  
Research Organisations

Geoscientists representing the main research institutes who discovered and have made significant contributions to our understanding of the early crustal rocks in the North Atlantic area visited West Greenland in June 1978. The group was partially financed by Nato scientific research grant 949 and by national research organisations, universities and geological surveys in Denmark, Norway, the United Kingdom, Canada and the USA. Bridgwater, Taylor and Moorbath stayed on into July at Isua where they joined a party financed by the U.S. S.N.F. organised by C. Ponnamperuma (University of Maryland).

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