scholarly journals Evolution of the central West Greenland margin and the Nuussuaq Basin: Localised basin uplift along a stable continental margin proposed from thermochronological data

2018 ◽  
Vol 30 (6) ◽  
pp. 1230-1246 ◽  
Author(s):  
Scott Jess ◽  
Randell Stephenson ◽  
Roderick Brown
Keyword(s):  
Continental Margin ◽  
West Greenland ◽  
Greenland Margin

Seismic architecture and evolution of the Disko Bay trough-mouth fan, central West Greenland margin

2016 ◽  
Vol 147 ◽  
pp. 69-90 ◽  
Author(s):  
Julia C. Hofmann ◽  
Paul C. Knutz ◽  
Tove Nielsen ◽  
Antoon Kuijpers
Keyword(s):  
West Greenland ◽  
Greenland Margin

scholarly journals Biostratigraphic correlation of the western and eastern margins of the Labrador–Baffin Seaway and implications for the regional geology

2016 ◽  
Vol 37 ◽  
pp. 1-74 ◽  
Author(s):  
Henrik Nøhr-Hansen ◽  
Graham L. Williams ◽  
Robert A. Fensome
Keyword(s):  
Fungal Spores ◽  
Climatic Conditions ◽  
The West ◽  
West Greenland ◽  
Palynological Assemblages ◽  
Thermal Maximum ◽  
Biostratigraphic Correlation ◽  
Western Side ◽  
Greenland Margin ◽  
The Relationship

New analyses of the palynological assemblages in 13 offshore wells on the Canadian margin and six on the West Greenland Margin, in conjunction with onshore data, have led to a new biostratigraphic framework for the Cretaceous–Cenozoic strata of the Labrador Sea – Davis Strait – Baffin Bay (Labrador–Baffin Seaway) region and the first broad biostratigraphic correlation of the Canadian and Greenland margins. This framework is based on 167 last occurrences and 18 local/regional peak/common-occurrence events for dinocysts, miospores, fungal spores and Azolla. Detailed biostratigraphic evidence has confirmed the following hiatuses: pre-Aptian in the Hopedale Basin; pre-Albian in the Saglek Basin; Albian–Turonian in some wells of the Hopedale Basin; Turonian–Santonian/Campanian in some areas; pre-Campanian and late Campanian – Thanetian on the Greenland Margin; late Maastrichtian and Danian in some wells of the Hopedale Basin and in the Saglek Basin; Selandian in part of the Hopedale Basin, in all the Saglek Basin wells and in two wells on the West Greenland Margin; late Ypresian and/or Lutetian on both sides; Oligocene to middle Miocene of considerable variability on both margins, with all of the Oligocene and the lower Miocene missing in all the West Greenland Margin wells; and middle to late Miocene on the western side. On the Canadian margin, the hiatuses can be partially matched with the five previously recognised regional unconformities; on the Greenland margin, however, the relationship to the five unconformities is more tenuous. Palynomorph assemblages show that most Aptian to Albian sediments were deposited in generally non-marine to marginal marine settings, interrupted by a short-lived shallow marine episode in the Aptian. A marine transgression started in the Cenomanian–Turonian and led to the most open-marine, oceanic conditions in the Campanian–Lutetian; shallowing probably started in the late Lutetian and continued into the Rupelian, when inner neritic and marginal marine palaeoenvironments predominated. Throughout the rest of the Cenozoic, inner neritic palaeoenvironments alternated with marginal marine conditions on the margins of the Labrador–Baffin Seaway. These observations broadly reflect the tectonic evolution of the seaway, with rift conditions prevailing from Aptian to Danian times, followed by drift through much of the Paleocene and Eocene, and post-drift from Oligocene to the present. Dinocysts indicate that climatic conditions in the Labrador–Baffin Seaway region were relatively temperate in the Cretaceous, but varied dramatically through the Cenozoic. The Danian was a time of increasingly warmer climate, a thermal maximum being reached around the Paleocene–Eocene boundary reflecting the global thermal event at this time. Warm to hot conditions prevailed throughout the Ypresian, but the climate began to cool in the Lutetian, a trend that accelerated through the Priabonian and Rupelian. Throughout the Neogene, temperatures generally declined, culminating in the Quaternary.

Evolution of the west Greenland margin: offshore thermostratigraphic data and modelling

2012 ◽  
Vol 169 (5) ◽  
pp. 515-530 ◽  
Author(s):  
E. D. McGregor ◽  
S. B. Nielsen ◽  
R. A. Stephenson ◽  
O. R. Clausen ◽  
K. D. Petersen ◽  
...  
Keyword(s):  
The West ◽  
West Greenland ◽  
Greenland Margin

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.

The southern West Greenland continental margin: rifting history, basin development, and petroleum potential

1993 ◽  
Vol 4 (1) ◽  
pp. 915-931 ◽  
Author(s):  
J. A. CHALMERS ◽  
T. C. R. PULVERTAFT ◽  
F. G. CHRISTIANSEN ◽  
H. C. LARSEN ◽  
K. H. LAURSEN ◽  
...  
Keyword(s):  
Continental Margin ◽  
Petroleum Potential ◽  
West Greenland ◽  
Basin Development

scholarly journals Tectonic variation and structural evolution of the West Greenland continental margin

AAPG Bulletin ◽  
2015 ◽  
Vol 99 (09) ◽  
pp. 1689-1711 ◽  
Author(s):  
S. Alsulami ◽  
D.A. Paton ◽  
D.G. Cornwell
Keyword(s):  
Continental Margin ◽  
Structural Evolution ◽  
The West ◽  
West Greenland

Reinterpretation of two diatom species from the West Greenland margin — Thalassiosira kushirensis and Thalassiosira antarctica var. borealis — hydrological consequences

2012 ◽  
Vol 88-89 ◽  
pp. 1-14 ◽  
Author(s):  
Diana W. Krawczyk ◽  
Andrzej Witkowski ◽  
Marcin Wroniecki ◽  
Joanna Waniek ◽  
Krzysztof J. Kurzydłowski ◽  
...  
Keyword(s):  
Diatom Species ◽  
The West ◽  
West Greenland ◽  
Greenland Margin

scholarly journals Geology and petroleum prospectivity of the region offshore southern West Greenland – a summary

1995 ◽  
Vol 165 ◽  
pp. 13-21
Author(s):  
J.A Chalmers ◽  
T Dahl-Jensen ◽  
K.J Bate ◽  
R.C Whittaker
Keyword(s):  
Continental Margin ◽  
Seismic Data ◽  
Sedimentary Basins ◽  
Geophysical Data ◽  
Geological Survey ◽  
Regional Structure ◽  
Complete Understanding ◽  
Petroleum Potential ◽  
West Greenland ◽  
First Time

Since 1987, the Geological Survey of Greenland (GGU) has been engaged in a re-assessment of the geology and petroleum potential of the region offshore southern West Greenland. In I994, a milestone was reached in this study when, for the first time, a fairly complete understanding of the regional structure and stratigraphy of all of the sedimentary basins and the continental margin off shore southern West Greenland was achieved. This paper presents an account of how the work was carried out and gives a summary of the geological results. Due to the area being offshore, its investigation required the interpretation of geophysical data, primarily seismic data, tied to boreholes.

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