The post-Triassic evolution of the Sorgenfrei–Tornquist Zone — results from thermo-mechanical modelling

Hansen, David L.; Nielsen, Søren B.; Lykke‐Andersen, Holger

doi:10.1016/s0040-1951(00)00216-x

Cited by 57 publications

(35 citation statements)

References 15 publications

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“…This overburial estimate furthermore is inconsistent with our detailed and thoroughly tested model of inversion zone evolution (e.g. Hansen et al, 2000;Nielsen and Hansen, 2000;Nielsen et al, 2005Nielsen et al, , 2007 because the wells Aars-1 and Farsø-1 are not located on the inversion ridge but in the associated marginal trough, which experienced increased subsidence and not uplift and erosion during the late Cretaceous inversions.…”

Section: Late Cenozoic Exhumation Of the North Sea Basincontrasting

confidence: 75%

The ICE hypothesis stands: How the dogma of late Cenozoic tectonic uplift can no longer be sustained in the light of data and physical laws

Nielsen

Clausen

Jacobsen

et al. 2010

Journal of Geodynamics

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Section: Late Cenozoic Exhumation Of the North Sea Basincontrasting

confidence: 75%

The ICE hypothesis stands: How the dogma of late Cenozoic tectonic uplift can no longer be sustained in the light of data and physical laws

Nielsen

Clausen

Jacobsen

et al. 2010

Journal of Geodynamics

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“…During the Cretaceous–Neogene it developed a series of gentle W–E‐ to NW–SE‐trending en echelon compressional domes and NW–SE‐trending faults (Jensen & Michelsen ; Hansen et al . ; Mogensen & Korstgaard ), including a reverse compressional fault passing the southwestern limit of the Læsø archipelago.…”

Section: Elements Of Uplift Of Læsø's Beach Plainsmentioning

confidence: 99%

“…Hansen et al . , ) and in calculations of depth and temperature history of hydrocarbon‐generating strata (e.g. Japsen et al .…”

Section: Detrending For Local Neotectonic Effects (Ul)mentioning

confidence: 99%

Absolute sea levels and isostatic changes of the eastern North Sea to central Baltic region during the last 900 years

Hansen

Aagaard

Binderup

2011

Boreas

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Most studies of late Holocene sea‐level changes generally assume stable tectonic conditions. However, unrecognized neotectonic ‘noise’, even the small rates of passive continental margins, can severely distort sea‐level reconstructions of the late Holocene. The detailed sea‐level curve proposed here is reconstructed by identification of an area (Læsø archipelago in the Kattegat Sea) where small neotectonic level changes and other kinds of ‘background noise’ can be precisely quantified by advanced LiDAR techniques. We show that the absolute (‘eustatic’) sea level of Kattegat has risen by 110±14 cm since AD 1300 and that the Little Ice Age lowstand occurred between 1250 and 1750. Thereafter, four oscillations with a cyclicity of ∼70 years peaked around 1790, 1860, 1920–1950 (double peak), and at the present. We discuss the global implications of the curve, for example that the acceleration in the present sea‐level rise may be part of this 70‐year cyclicity, and that the non‐anthropogenic sea‐level rise between 1700 and 1790 seems faster than the present and projected sea‐level rise for the 21st century. Moreover, the conspicuous sea‐level fall at the beginning of the Little Ice Age confirms that ice‐cap growth can be faster than ice‐cap melting. By comparison with 29 long‐term tide gauge measurements of the region we show that the isostatic implications of the sea‐level curve are in nearly perfect agreement with Peltier's global isostatic VM2 model (applied by IPCC and PSMSL) and yield a 3–4 times smaller spread of isostatic rates. Owing to this higher precision it is possible to produce a reliable isostatic map of SW Scandinavia, Denmark, N Germany and NW Poland. This new map identifies an isostatic jump by ∼0.6 mm a−1 at the Ringkøbing‐Fyn Basement High, separating the isostatic pattern of the North German Basin from the isostatic pattern of the Danish Basin and the Scandinavian Peninsula.

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“…Basin inversion has been investigated with many analogue (e.g. Buchanan & McClay 1991; Eisenstadt & Withjack 1995; McClay 1995; Brun & Nalpas 1996; Panien et al 2005; Del Ventisette et al 2006) and fewer numerical (Hansen et al 2000; Buiter & Pfiffner 2003; Hansen & Nielsen 2003) models. We use a numerical approach because this allows the application of a temperature‐dependent rheology and gives large freedom in investigating the effects of variations in material properties and model setup.…”

Section: Numerical Models Of Basin Inversionmentioning

confidence: 99%

Horizontal movements in the eastern Barents Sea constrained by numerical models and plate reconstructions

Buiter

Torsvik

2007

Geophysical Journal International

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S U M M A R YThe eastern Barents Sea basins, west of Novaya Zemlya, were mildly inverted between Late Permian and Early Jurassic times, as indicated by mild folds in the basin sediments. Previous studies have suggested that the crustal part of Novaya Zemlya was thrust westward, but the magnitude of this compressive movement is not well known. Our aim is to provide an order-ofmagnitude constraint on the amount of shortening associated with the displacement of Novaya Zemlya and inversion of the eastern Barents Sea basins by combining numerical models and plate reconstructions in an iterative process. We use a 2-D finite-element method to model inversion of a pre-defined basin. The total amount of shortening imposed on the models is first constrained by plate reconstructions for the Barents Sea region for the Late Palaeozoic to Early Mesozoic. We assume that the shortening is caused by westward movement of the Siberian plate, but the magnitude of this westward displacement in plate reconstructions is highly uncertain due to the allochthonous nature of the rocks of Novaya Zemlya and the scarcity of palaeomagnetic data in the region. Our models show that shortening localizes in the model basin and at Novaya Zemlya and that westward propagation of deformation is more efficient when the strength of the lower crust is reduced. Part of the movement of the Siberian plate could be accommodated by thrusts at Novaya Zemlya and perhaps in the domain of the Kara Sea at the western margin of the Siberian plate. By comparing the inversion obtained in the numerical models to the inferred inversion structures in the eastern Barents Sea basins we further constrain the amount of shortening that caused the inversion and therewith improve the plate reconstructions for the region. Our models indicate that the westward movement of Novaya Zemlya occurred in the Late Triassic-Early Jurassic and was limited in magnitude to 100-200 km, which is considerably less than previous estimates (500-700 km).

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The post-Triassic evolution of the Sorgenfrei–Tornquist Zone — results from thermo-mechanical modelling

Cited by 57 publications

References 15 publications

The ICE hypothesis stands: How the dogma of late Cenozoic tectonic uplift can no longer be sustained in the light of data and physical laws

The ICE hypothesis stands: How the dogma of late Cenozoic tectonic uplift can no longer be sustained in the light of data and physical laws

Absolute sea levels and isostatic changes of the eastern North Sea to central Baltic region during the last 900 years

Horizontal movements in the eastern Barents Sea constrained by numerical models and plate reconstructions

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