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Amundsen Basin

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Journal Article
Published: 01 November 2012
Russ. Geol. Geophys. (2012) 53 (11): 1150–1162.
...: the Podvodnikov Basin and the Amundsen Plain. It is the first time that a seismic model has taken into account both regional seismic-reflection profiles obtained from NP drifting ice stations and recent high-resolution CDP data. Our seismic model agrees both with geological data on the Laptev Sea continental...
FIGURES
First thumbnail for: Seismic geologic structure model for the sedimenta...
Second thumbnail for: Seismic geologic structure model for the sedimenta...
Third thumbnail for: Seismic geologic structure model for the sedimenta...
Image
Sediment thickness map of Amundsen Basin, derived from 3D gravity inversion by Døssing et al. (2014). Seismic reflection tracks are shown as thin black and red lines. The red lines, acquired between 2014 and 2016, show sediment thicknesses along the line, overlain on the background grid. The 350 M distance constraint is in red and the 200 M limit of Canada is in purple. NP is the North Pole. The heavier black line is the outer limit of the continental shelf in Amundsen Basin, largely determined by the formulae from the foot of slope at the base of LR.
Published: 20 October 2022
Fig. 52. Sediment thickness map of Amundsen Basin, derived from 3D gravity inversion by Døssing et al. (2014) . Seismic reflection tracks are shown as thin black and red lines. The red lines, acquired between 2014 and 2016, show sediment thicknesses along the line, overlain on the background
Image
Geographic location and geological sketch of Amundsen Basin, containing the Brock Inlier on its western rim. The main exposures of the study area, located along the Brock River Canyon, are reported in the GoogleTM Earth satellite view and labelled with roman numerals.
Published: 01 March 2016
Fig. 1.— Geographic location and geological sketch of Amundsen Basin, containing the Brock Inlier on its western rim. The main exposures of the study area, located along the Brock River Canyon, are reported in the Google TM Earth satellite view and labelled with roman numerals.
Image
(A) is a bathymetric profile that crosses from Ellesmere Island, across the Queen Elizabeth Shelf, on to Lomonosov Ridge and to Amundsen Basin. (B) is a seismic profile (envelop display) that transects Lomonosov Ridge from Makarov Basin to Amundsen Basin. Sediments from both Makarov Basin and Amundsen Basin onlap and truncate against Lomonosov Ridge, resulting in a sudden and dramatic change in gradient at the base of the slope. The inset map shows the location of these profiles. MB is Makarov Basin and NP is the North Pole.
Published: 20 October 2022
Fig. 40. (A) is a bathymetric profile that crosses from Ellesmere Island, across the Queen Elizabeth Shelf, on to Lomonosov Ridge and to Amundsen Basin. (B) is a seismic profile (envelop display) that transects Lomonosov Ridge from Makarov Basin to Amundsen Basin. Sediments from both Makarov
Series: Geological Society, London, Memoirs
Published: 01 January 2011
DOI: 10.1144/M35.48
EISBN: 9781862394100
... The sediment prism along the Lomonosov Ridge continental margin of the Amundsen Basin is diminutive compared with that of the Barents–Kara Sea continental margin (e.g. Jokat et al. 1995 , fig. 6). The Amundsen Basin continental margin prism was produced by sediment shed from source areas...
Journal Article
Journal: GSA Bulletin
Published: 01 April 1996
GSA Bulletin (1996) 108 (4): 454–470.
... stratigraphic studies of Succession B, along with improved geochronology, allow extension and refinement of existing correlation schemes for northwestern Canada and Alaska. Succession B strata include the Shaler Supergroup of the Amundsen Basin, Mackenzie Mountains supergroup of the Mackenzie Mountains fold...
Journal Article
Journal: GSA Bulletin
Published: 30 June 2017
GSA Bulletin (2017) 129 (11-12): 1408–1423.
...). The high similarity of data sets from widely separated units supports long-held stratigraphic correlations between the late Mesoproterozoic–Neoproterozoic Mackenzie and Amundsen basins. The breadth of the inferred fluvial system was at least 1200 km, much wider than any modern fluvial system on Earth...
FIGURES
First thumbnail for: Zircon provenance data record the lateral extent o...
Second thumbnail for: Zircon provenance data record the lateral extent o...
Third thumbnail for: Zircon provenance data record the lateral extent o...
Series: AAPG Memoir
Published: 01 January 1973
DOI: 10.1306/M19375C39
EISBN: 9781629812199
... Abstract The Eurasian basin, which includes the mid-ocean Gakkel Ridge and the abyssal Nansen and Amundsen basins, is the only region of the world's oceans where the magnetic field has been thoroughly studied. Systematic surveys have also been made over the Lomonosov and Mendeleyev Ridges...
Journal Article
Journal: Geology
Published: 26 March 2021
Geology (2021) 49 (7): 779–783.
..., within uncertainty, to ages from the Midcontinent Rift and the Amundsen Basin in northwestern Canada. These ages imply that the late Mesoproterozoic extensional episode in Laurentia was widespread and likely linked to a common origin. We propose that significant thermal anomalies and mantle upwelling...
FIGURES
First thumbnail for: Re-Os geochronology highlights widespread latest M...
Second thumbnail for: Re-Os geochronology highlights widespread latest M...
Third thumbnail for: Re-Os geochronology highlights widespread latest M...
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Distribution of the late Mesoproterozoic Bylot, Amundsen and Hornby Bay basins in central and eastern Arctic Canada and northwestern Greenland. (a) Map of North America; the red rectangle highlights the map area shown in part (b). (b) Distribution of inliers comprising the Bylot basins (red) from Jackson and Iannelli (1981), the Amundsen Basin (orange) and the Hornby Bay Basin (yellow) from Young et al. (1979) and Rainbird et al. (2020).
Published: 17 May 2023
Fig. 1. Distribution of the late Mesoproterozoic Bylot, Amundsen and Hornby Bay basins in central and eastern Arctic Canada and northwestern Greenland. ( a ) Map of North America; the red rectangle highlights the map area shown in part (b). ( b ) Distribution of inliers comprising the Bylot
Journal Article
Published: 23 November 2016
Canadian Journal of Earth Sciences (2017) 54 (4): 430–444.
... thermochronology (ZHe) and organic maturity (vitrinite reflectance (VRo)) data from Neoproterozoic strata of the Amundsen Basin, Cambrian strata of the Arctic Platform, and Devonian strata of the Franklinian Basin to help resolve the sedimentary thickness deposited and eroded during the time represented...
FIGURES
First thumbnail for: Investigating the Paleozoic–Mesozoic low-temperatu...
Second thumbnail for: Investigating the Paleozoic–Mesozoic low-temperatu...
Third thumbnail for: Investigating the Paleozoic–Mesozoic low-temperatu...
Journal Article
Published: 01 December 1992
Canadian Journal of Earth Sciences (1992) 29 (12): 2537–2550.
... of kilometres wide. It is interpreted as the deposit of a big river, occupying a braid plain, at least 150 km wide, which flowed into the Amundsen Basin from the southeast. The dominant elements of this deposit are stacked tabular and laterally continuous compound crossbeds, interpreted as very large channel...
Journal Article
Journal: Geology
Published: 01 March 1993
Geology (1993) 21 (3): 227–230.
... in the Nansen basin is about 20 cm, or more where influenced by turbidites. On the Gakkel Ridge, calcite preservation is excellent and Holocene strata are consistently documented to be at least 4 to 20 cm thick. In the Amundsen Basin, preservation of nannofossils is sometimes poor. Holocene specimens...
Journal Article
Published: 01 August 1977
Canadian Journal of Earth Sciences (1977) 14 (8): 1771–1787.
...Grant M. Young Abstract In the northwestern part of the Canadian Shield upper Proterozoic rocks of Banks Island, Brock Inlier, Coppermine area (Rae Group), Minto Arch of Victoria Island, and some small inliers have all been considered as parts of the Amundsen Basin. Formational correlation among...
Journal Article
Published: 01 April 2021
Russ. Geol. Geophys. (2021) 62 (4): 460–473.
... sediments has shown that the input of terrigenous sediments enriched in the products of abrasion of lithified rocks determines sedimentation process on the continental slope of the Laptev Sea and in the Amundsen Basin. The individual characteristics of the DOM of the late Cenozoic sediments from...
FIGURES
First thumbnail for: Molecular Geochemistry of the Dispersed Organic Ma...
Second thumbnail for: Molecular Geochemistry of the Dispersed Organic Ma...
Third thumbnail for: Molecular Geochemistry of the Dispersed Organic Ma...
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(a) Seismic images with interpretation (yellow lines) to illustrate cross-sections of sediment drifts along the top of the Makarov Basin flank of the Lomonosov Ridge. The present-day flow across the ridge (yellow arrow on map) is in periodic pulses of about three days with a maximum amplitude of 12 cm s−1 measured 25 m above the seabed (Aagard 1981). (b) Seismic images from the Amundsen Basin flank of the Lomonosov Ridge with interpretation (yellow lines) to illustrate the partial cross-section of sediment drifts. The image from <5 km from the ACEX drill site is shown in the middle upper panel. A time-equivalent sediment drift along the top of the Amundsen Basin flank at 89° N on the North American Segment is shown in the panel below (Fram-2014/15, line 3B). Reflections interpreted as internal multiples in the latter image are marked by white ‘X’ symbols. Erosional unconformities are indicated by red lines. The profile location (green) is shown in Figure 4. Source: The upper right panel shows an example of sediment drifts on top of the Lomonosov Ridge topography from Nikishin et al. (2021).
Published: 30 January 2025
amplitude of 12 cm s −1 measured 25 m above the seabed ( Aagard 1981 ). ( b ) Seismic images from the Amundsen Basin flank of the Lomonosov Ridge with interpretation (yellow lines) to illustrate the partial cross-section of sediment drifts. The image from <5 km from the ACEX drill site is shown
Image
(a) Seismic images with interpretation (yellow lines) to illustrate cross-sections of sediment drifts along the top of the Makarov Basin flank of the Lomonosov Ridge. The present-day flow across the ridge (yellow arrow on map) is in periodic pulses of about three days with a maximum amplitude of 12 cm s−1 measured 25 m above the seabed (Aagard 1981). (b) Seismic images from the Amundsen Basin flank of the Lomonosov Ridge with interpretation (yellow lines) to illustrate the partial cross-section of sediment drifts. The image from &lt;5 km from the ACEX drill site is shown in the middle upper panel. A time-equivalent sediment drift along the top of the Amundsen Basin flank at 89° N on the North American Segment is shown in the panel below (Fram-2014/15, line 3B). Reflections interpreted as internal multiples in the latter image are marked by white ‘X’ symbols. Erosional unconformities are indicated by red lines. The profile location (green) is shown in Figure 4. Source: The upper right panel shows an example of sediment drifts on top of the Lomonosov Ridge topography from Nikishin et al. (2021).
Published: 30 January 2025
amplitude of 12 cm s −1 measured 25 m above the seabed ( Aagard 1981 ). ( b ) Seismic images from the Amundsen Basin flank of the Lomonosov Ridge with interpretation (yellow lines) to illustrate the partial cross-section of sediment drifts. The image from <5 km from the ACEX drill site is shown
Image
Regional unconformity (arrows) between the Upper Eocene–Lower Oligocene and mid-Miocene sediments in the Amundsen basin, the Lomonosov Ridge, and the western Makarov basin (modified after Butsenko, 2008).
Published: 01 November 2010
Fig. 9. Regional unconformity (arrows) between the Upper Eocene–Lower Oligocene and mid-Miocene sediments in the Amundsen basin, the Lomonosov Ridge, and the western Makarov basin (modified after Butsenko, 2008 ).
Image
Location map showing generalized distributions of Cambrian and older successions in NW Canada and adjacent Alaska. Uplifts and inliers named in the text are labeled. Amundsen Basin is from Rainbird et al. (1996a). LIP—large igneous province.
Published: 01 March 2014
Figure 1. Location map showing generalized distributions of Cambrian and older successions in NW Canada and adjacent Alaska. Uplifts and inliers named in the text are labeled. Amundsen Basin is from Rainbird et al. (1996a). LIP—large igneous province.
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International Bathymetric Chart of the Arctic Ocean (IBCAO) and elements of the Arctic Ocean mentioned in text. Abbreviations stand for W, Wrangel Island; FJL, Franz Josef Land Archipelago; AB, Amundsen Basin; CAA, Canadian Arctic Archipelago; NB, Nansen Basin; MB, Makarov Basin; PB, Podvodnikov Basin; NS, New Siberian Archipelago; NR, Northwind Ridge; SV, Svalbard Archipelago.
Published: 01 December 2016
Fig. 1. International Bathymetric Chart of the Arctic Ocean (IBCAO) and elements of the Arctic Ocean mentioned in text. Abbreviations stand for W, Wrangel Island; FJL, Franz Josef Land Archipelago; AB, Amundsen Basin; CAA, Canadian Arctic Archipelago; NB, Nansen Basin; MB, Makarov Basin; PB