Browsing Institutt for geofag by Title
Now showing items 1482-1501 of 2313
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)eismological studies of large-scale processes at convergent plate boundaries typically probe lower crustal structures with wavelengths of several kilometers, whereas field-based studies typically sample the resulting ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)A conspicuous 60° bend of the Hawaiian-Emperor Chain in the north-western Pacific Ocean has variously been interpreted as the result of an abrupt Pacific plate motion change in the Eocene (∼47 Ma), a rapid southward drift ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)We have devised a new absolute Late Jurassic‐Cretaceous Pacific plate model using a fixed hot spot approach coupled with paleomagnetic data from Pacific large igneous provinces (LIPs) while simultaneously minimizing plate ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)This study focuses on the tectonic evolution of the greater Egersund Basin in the Norwegian central North Sea, with special emphasis on Late Paleozoic extensional tectonics following Caledonian collapse and the Variscan ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)Unravelling past, large-scale ocean circulation patterns is crucial for deciphering the longterm global paleoclimate. Here we apply numerical modelling to reconstruct the detailed paleobathymetry-topography of the southwestern ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)Abstract. The International Ocean Discovery Program (IODP) Expedition 396 to the mid-Norwegian margin recovered > 1300 m of pristinely preserved, volcanic-ash-rich sediments deposited during the late Paleocene and early ...
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(Doctoral thesis / Doktoravhandling, 2020)In the Cenozoic time (66 – 0 Ma) the global climate changed from greenhouse to icehouse conditions. Changes in continents and ocean geometry, geography, and topography due to plate tectonics, erosion, and mantle dynamics ...
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(Master thesis / Masteroppgave, 2008)ABSTRACT The current study reveals the transgressive-regressive sequences and depositional environments of Paleogene Frysjaodden and Hollendardalen formations recorded in the Central Tertiary Basin of Spitsbergen. In ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)Here we present new 40Ar/39Ar geochronology, rock magnetic, and paleomagnetic data obtained from rocks from three distinct domains of the Precambrian Sveconorwegian orogen (Southern Norway) that record progressively younger ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)Abstract The South Qiangtang block of the Qinghai‐Tibet Plateau represents an area critical to understanding the late Paleozoic and early Mesozoic history of the Tethyan realm, but its drift history remains poorly constrained. ...
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(Master thesis / Masteroppgave, 2021)A paleomagnetic survey of rocks from the Orkney Islands, Scotland.
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)Molecular trees and geochemical markers suggest the divergence of dinoflagellates as early eukaryotes (~650 million years ago), but the traditional fossil record of cysts (dinocysts) starts during the Triassic (~230 million ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)The data presented in this article are related to the research article “Palynology and weathering proxies reveal climatic fluctuations during the Carnian Pluvial Episode (CPE) (Late Triassic) from marine successions in the ...
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(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2022)The prevailing arid Late Triassic climate was interrupted by a humid Carnian Pluvial Episode (CPE) during the mid-Carnian period. In this study, a palynological study was conducted for the Ma'antang Formation (Carnian) ...
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(Master thesis / Masteroppgave, 2012)
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(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)In the early Late Triassic, the Carnian Pluvial Episode (CPE) is a phase with increased siliciclastic influx into the marine-carbonate dominated depositional setting of the Western Tethys assumingly caused by a shift to ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)Palynostratigraphic and palynofacies analysis have been performed on hydrocarbon seep carbonate, carbonate nodule and mudstone samples from the Early Cretaceous Kuhnpasset Beds in the Kuhnpasset area of Wollaston Forland, ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)Permafrost is present within almost all of the Antarctic's ice-free areas, but little is known about spatial variations in permafrost temperatures except for a few areas with established ground temperature measurements. ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)The entirety of the sediment bed in lake Tyrifjorden, Norway, is contaminated by per- and polyfluoroalkyl substances (PFAS). A factory producing paper products and a fire station were investigated as possible sources. Fire ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)Parameter uncertainty estimation is one of the major challenges in hydrological modeling. Here we present parameter uncertainty analysis of a recently released distributed conceptual hydrological model applied in the Nea ...