scholarly journals Geological and geophysical work in the Nûgssuaq-Disko region, central West Greenland

1973 ◽  
Vol 55 ◽  
pp. 18-20
Author(s):  
G Henderson
Keyword(s):  
Continental Shelf ◽  
Volcanic Rocks ◽  
The West ◽  
Academic Interest ◽  
Entire Area ◽  
Petroleum Potential ◽  
West Greenland

During the summer the geological and geophysical work on Cretaceous-Tertiary sedimentary and volcanic rocks of central West Greenland embarked upon in 1971 (see Henderson, 1972), was continued. This programme ran concurrently with offshore geophysical work (see Denham, this report), the object of the combined investigations being to study in detail the sedimentary and volcanic rocks of the entire area. With the interest in the petroleum potential of the West Greenland continental shelf continuing unabated, the only area where the Cretaceous-Tertiary rocks are exposed is clearly of considerable economic as well as academic interest.

scholarly journals Investigations of Tertiary volcanic rocks along the south coast of Nûgssuaq and in eastern Disko, 1987

1988 ◽  
Vol 140 ◽  
pp. 28-32
Author(s):  
L.M Larsen ◽  
A.K Pedersen
Keyword(s):  
Volcanic Rocks ◽  
Field Work ◽  
South Coast ◽  
The West ◽  
West Greenland ◽  
Early Tertiary ◽  
Composite Section ◽  
Greenland Basin ◽  
Volcanic Facies ◽  
Integrated Study

As a continuation of an integrated study of sedimentary and volcanic facies in the Cretaceous to Tertiary West Greenland basin (G. K.Pedersen, 1987; A. K. Pedersen & Larsen, 1987) early Tertiary volcanic rocks were studied in 1987 along a NW-SE trending composite section, about 120 km in length; on Niigssuaq and Disko. The study attempts to establish and describe lithostratigraphic volcanic units in the Tertiary volcanic formations, and through a combination of field mapping, photogrammetry and geochemistry to establish chronostratigraphic horizons through the early Tertiary deposits of the region. In this respect it is essential to identify the same eruptive units as subaeriallava facies and as subaqueous lava or hyaloclastite facies, and to trace subaerial tufts throughout the area. In the first part of the season localities along the Vaigat coast of Nûgssuaq from Kugssinerssuaq in the east to Nûssap qâqarssua in the west were investigated. In the second part of the season very poorly known areas in the western and southem part ofthe Kvandalen region on east Disko were investigated. The field work was supported by the Arctie Station in Godhavn and its cutter Porsild as well as by GGU's cutter J. F. Johnstrup.

scholarly journals Project Westmar, A shallow marine geophysical survey on the West Greenland continental shelf

1979 ◽  
Vol 87 ◽  
pp. 1-29
Author(s):  
C.P Brett ◽  
E.F.K Zarudzki
Keyword(s):  
Continental Shelf ◽  
Geophysical Survey ◽  
The West ◽  
Shallow Marine ◽  
Western Margin ◽  
Sea Floor ◽  
West Greenland ◽  
Maximum Water ◽  
Shelf Margin ◽  
Morphological Relationship

An extensive shallow geophysical survey has been carried out on the West Greenland continental shelf between 64° and 69°30'N. Preliminary interpretation of the data reveals that between 64° and 67°30'N at least, the entire shelf was glaciated to its western margin during the Pleistocene, the glaciation processes leaving a variable (< 20-200 m thick) cover on the Tertiary sedimentary wedge underlying the shelf. A morphological relationship exists between the degree of sea floor roughness and the types of glaciation forms. The distribution and contacts of the three main shallow bedrock units in the area (Precambrian gneisses, Lower Tertiary volcanics and Tertiary sediments) are delineated. Widespread prograding is observed in sediments along the shelf margin. Extensive iceberg scouring of the sea floor is observed north of 67°30'N reaching a maximum water depth of 340 m.

Play-Based Yet-to-Find Resource Assessment of the West Greenland Continental Shelf

2021 ◽  
Author(s):  
G. Dam ◽  
M. Soenderholm ◽  
A. Mathiesen ◽  
U. Gregersen ◽  
J. Bojesen-Koefoed ◽  
...  
Keyword(s):  
Continental Shelf ◽  
Resource Assessment ◽  
The West ◽  
West Greenland

scholarly journals Tectonostratigraphy and evolution of the West Greenland continental margin

2020 ◽  
Vol 67 ◽  
pp. 1-21 ◽  
Author(s):  
Ulrik Gregersen ◽  
Paul C. Knutz ◽  
Henrik Nøhr-Hansen ◽  
Emma Sheldon ◽  
John R. Hopper
Keyword(s):  
Oceanic Crust ◽  
Continental Margin ◽  
Volcanic Rocks ◽  
Sedimentary Basins ◽  
Magnetic Data ◽  
The West ◽  
Seismic Reflection Data ◽  
Baffin Bay ◽  
West Greenland ◽  
North East

Large structural highs and sedimentary basins are identified from mapping of the West Greenland continental margin from the Labrador Sea to the Baffin Bay. We present a new tectonic elements map and a map of thickness from the seabed to the basement of the entire West Greenland margin. In addition, a new stratigraphic scheme of the main lithologies and tectonostratigraphy based on ties to all offshore exploration wells is presented together with seven interpreted seismic sections. The work is based on interpretation of more than 135 000 km of 2D seismic reflection data supported by other geophysical data, including gravity- and magnetic data and selected 3D seismic data, and is constrained by correlation to wells and seabed samples. Eight seismic mega-units (A–H) from the seabed to the basement, related to distinct tectonostratigraphic phases, were mapped. The oldest units include pre-rift basins that contain Proterozoic and Palaeozoic successions. Cretaceous syn-rift phases are characterised by development of large extensional fault blocks and basins with wedge-shaped units. The basin strata include Cretaceous and Palaeogene claystones, sandstones and conglomerates. During the latest Cretaceous, Paleocene and Eocene, crustal extension followed by oceanic crust formation took place, causing separation of the continental margins of Greenland and Canada with north-east to northward movement of Greenland. From Paleocene to Eocene, volcanic rocks dominated the central West Greenland continental margin and covered the Cretaceous basins. Development of the oceanic crust is associated with compressional tectonics and the development of strike-slip and thrust faults, pull-apart basins and inversion structures, most pronounced in the Davis Strait and Baffin Bay regions. During the late Cenozoic, tectonism diminished, though some intra-plate vertical adjustments occurred. The latest basin development was characterised by formation of thick Neogene to Quaternary marine successions including contourite drifts and glacial related shelf progradation towards the west and south-west.

scholarly journals Mapping and classifying the seabed of the West Greenland continental shelf

2017 ◽  
Vol 187 ◽  
pp. 231-240 ◽  
Author(s):  
S. Gougeon ◽  
K.M. Kemp ◽  
M.E. Blicher ◽  
C. Yesson
Keyword(s):  
Continental Shelf ◽  
The West ◽  
West Greenland

New Geophysical Data on the Continental Shelf of Central and Northern West Greenland

1973 ◽  
Vol 10 (4) ◽  
pp. 485-497 ◽  
Author(s):  
D. I. Ross ◽  
G. Henderson
Keyword(s):  
Continental Shelf ◽  
Geophysical Data ◽  
Shallow Depth ◽  
The West ◽  
West Greenland ◽  
Eastern Zone ◽  
Greenland Basin ◽  
Offshore Region

Recent geophysical work on the continental shelf of central and northern West Greenland has enabled the known onshore geology of the West Greenland Basin to be extended into the offshore region and the major graben running the length of the continental shelf in Melville Bugt to be defined in some detail. Two zones are observed within the offshore extension of the West Greenland Tertiary basalts. The eastern zone corresponds to dipping basalts at shallow depth similar to those occurring onshore on Hareøen, outermost Nûgssuaq, Ubekendt Ejland, and southwestern Svartenhuk. The more westerly zone corresponds to sub-horizontal to horizontal basalts whose top occurs at a depth of up to 1 km, the depth increasing towards the west and south. In the upper part of this offshore sequence the basalts are believed to be interlayered with Tertiary sediments. The Melville Bugt graben is shown to be a major continuous feature parallel to the coast of northwestern Greenland with sediment thicknesses of 7–10 km. The graben is believed to have been formed at the time of initial rifting of Canada and Greenland.

scholarly journals Project Westmar - a shallow marine geophysical survey on the West Greenland continental shelf between 64° and 70°N

1979 ◽  
Vol 95 ◽  
pp. 53-54
Author(s):  
C.P Brett ◽  
E.F.K Zarudzki
Keyword(s):  
Continental Shelf ◽  
Research Programme ◽  
Geotechnical Properties ◽  
Geophysical Survey ◽  
Detailed Knowledge ◽  
The West ◽  
Shallow Marine ◽  
Related Research ◽  
Sea Floor ◽  
West Greenland

Project WESTMAR is designed to provide detailed knowledge of the geological and geotechnical properties of the sea-floor and shallow sub-surface with particular reference to the exploration and development of any hydrocarbon resources in the area, as part of an energy-related research programme sponsored by the Danish Ministry for Commerce.

scholarly journals FEATURES OF GEOLOGICAL STRUCTURE AND PETROLEUM POTENTIAL OF CARBONATE SEDIMENTS ON THE WEST SIBERIAN PLATE TERRITORY

2017 ◽  
pp. 28-34
Author(s):  
M. L. Moroz ◽  
A. B. Tugareva
Keyword(s):  
Carbonate Rocks ◽  
Volcanic Rocks ◽  
Structural Features ◽  
Geological Structure ◽  
Late Devonian ◽  
Carbonate Sediments ◽  
The West ◽  
Petroleum Potential ◽  
Geological Information ◽  
Carbonate Deposits

The article considers the wells that have penetrated the carbonate sediments with the geological and paleontological information. By the late Devonian epoch paleogeographic scheme they are located in certain megazones with their inherent characteristics of sedimentation. Examples of lateral relations of carbonate or shalecarbonate rocks with subordinate volcanic rocks on Lovinsky and Khanty-Mansi areas are given. A variety of types of carbonate rocks is associated with structural features of basins in which there was sedimentation, as well as various secondary processes. Based on new geological information, obtained in recent years on Galyanovsk, South Galyanovsk, Khanty-Mansi and other areas, the areas of distribution of carbonate deposits within the Frolovskaya megadepression are clarified. Their petroleum potential is associated with reef structures is mostly confined to near rim parts of the deep depressions of the basement, a reliable mapping of which is possible with more detailed geophysical work.

Tertiary Basalts Dredged From Baffin Bay

1975 ◽  
Vol 12 (8) ◽  
pp. 1396-1405 ◽  
Author(s):  
D. B. Clarke
Keyword(s):  
Continental Shelf ◽  
Sea Level ◽  
Basaltic Magma ◽  
The West ◽  
Volcanic Province ◽  
Baffin Bay ◽  
West Greenland ◽  
The Third ◽  
Petrogenetic Model

Three dredge hauls were recovered from scarps on the West Greenland continental shelf in Baffin Bay. Two of the dredge hauls consisted essentially of basalts but the third, at the mouth of Disko Bay, contained some 50% Precambrian erratics. Both the mineralogy and chemistry of these offshore rocks are very similar to the most evolved basaltic compositions found elsewhere in the West Greenland Tertiary volcanic province. The dredged samples show none of the features expected for submarine tholeiites and were therefore probably erupted subaerially and later subsided below present day sea-level. A petrogenetic model, involving equilibration of a basaltic magma at a pressure in the range 5–8 kb, is proposed to account for the chemistry of this suite of rocks.

scholarly journals Disko Bugt Project 1992, West Greenland

1993 ◽  
Vol 159 ◽  
pp. 47-52
Author(s):  
F.G Christiansen
Keyword(s):  
Volcanic Rocks ◽  
Field Studies ◽  
Precambrian Basement ◽  
The West ◽  
Major Field ◽  
West Greenland ◽  
Proterozoic Basement

One of GGU's major field activities in 1992 took place in July and August in the Disko-Nuussuaq-Svartenhuk Halvø area of central West Greenland. This was the fourth and final year of field studies under the 'Disko Bugt Project', carried out from 1988–1992 with one summer's break in 1990. The Disko Bugt Project includes a large number of activities, essentially within two very different geological provinces: the Archaean-Proterozoic basement and supracrustal province, and the onshore part of the Cretaceous–Tertiary sedimentary and volcanic basin. The Precambrian basement is mainly exposed towards the east, and the sediments and volcanic rocks mainly towards the west.

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