The Klagenfurt Basin in the Eastern Alps: an intra-orogenic decoupled flexural basin?

Nemes, Franz; Neubauer, Franz; Cloetingh, S.A.P.L.; Genser, Johann

doi:10.1016/s0040-1951(97)00219-9

Cited by 40 publications

(35 citation statements)

References 13 publications

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“…A typical example of a glacial basin in the eastward oriented drainage is the Enns Valley (Schmid et al 2005). In contrast, the depth to bedrock in the area of the former Drau Glacier, just in front of the emerging Karawanken Mountains, is only in the range of 100 m according to drillholes (Nemes et al 1997;Spendlingwimmer and Heiss 1998) (Fig. 2).…”

Section: Distribution Of Overdeepened Valleysmentioning

confidence: 98%

Distribution, geometry, age and origin of overdeepened valleys and basins in the Alps and their foreland

2010

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Overdeepened valleys and basins are commonly found below the present landscape surface in areas that were affected by Quaternary glaciations. Overdeepened troughs and their sedimentary fillings are important in applied geology, for example, for geotechnics of deep foundations and tunnelling, groundwater resource management, and radioactive waste disposal. This publication is an overview of the areal distribution and the geometry of overdeepened troughs in the Alps and their foreland, and summarises the present knowledge of the age and potential processes that may have caused deep erosion. It is shown that overdeepened features within the Alps concur mainly with tectonic structures and/or weak lithologies as well as with Pleistocene ice confluence and partly also diffluence situations. In the foreland, overdeepening is found as elongated buried valleys, mainly oriented in the direction of former ice flow, and glacially scoured basins in the ablation area of glaciers. Some buried deeply incised valleys were generated by fluvial down-cutting during the Messinian crisis but this mechanism of formation applies only for the southern side of the Alps. Lithostratigraphic records and dating evidence reveal that overdeepened valleys were repeatedly occupied and excavated by glaciers during past glaciations. However, the age of the original formation of (non-Messinian) overdeepened structures remains unknown. The mechanisms causing overdeepening also remain unidentified and it can only be speculated that pressurised meltwater played an important role in this context.

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Section: Distribution Of Overdeepened Valleysmentioning

confidence: 98%

Distribution, geometry, age and origin of overdeepened valleys and basins in the Alps and their foreland

2010

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“…Subordinately, there are also NE-SW directed, left-lateral strike-slip faults, and accommodating rotation of blocks between main faults. Recent morphology of Karavanke is a consequence of the on-going tectonic movements evidenced by the current seimic activities (Jamšek ruPnik, 2013), active tectonics (PolinSki & eiSBacHer, 1991;nemeS et al, 1997;Jamšek ruPnik, 2013;miHevc et al, 2013) and accurate GPS measurements (vraBec et al, 2006).…”

Section: Geological Backgroundmentioning

confidence: 99%

Longitudinal profies of torrential channels in the Western Karavanke mountains

Mohorič¹,

Grigillo²,

Auflič³

et al. 2016

Geologija

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From the national digital elevation model DMV 5 of the Western Karavanke longitudinal profiles of fiftythree torrents were extracted. Longitudinal profiles of torrential channels in study area have generally convex sections and do not correspond to equilibrium state. In this paper, changes in lithology across faults and other potential influences are discussed as possible cause for observed convex longitudinal profiles. Some typical cases where it has been found, that convex sections could be result of faults, are graphically showed. Also lithology of torrential stream bed could be one of main factors for convexity. This applies in particular if the torrent crosses from soft to solid rock. IzvlečekIz državnega digitalnega modela višin DMV 5 območja Zahodnih Karavank so bili določeni vzdolžni profili 53 hudourniških strug. Vzdolžni profili hudournikov imajo večinoma odsekoma konveksno obliko in ne ustrezajo pogojem ravnovesnega stanja. V članku so kot možni vzroki za konveksnost vzdolžnih profilov obravnavane spremembe v litologiji preko prelomov in nekateri drugi potencialni dejavniki. Grafično so prikazani posamezni značilni primeri, kjer je bilo ugotovljeno, da so lahko konveksni odseki vzdolžnih profilov hudouniških strug posledica prelomov. Prav tako se je ugotovilo, da je lahko litologija podlage dna hudouniške struge eden izmed glavnih razlogov za pojavljanje konveksnih odsekov. To velja še posebej za primere, kjer hudournik preide iz mehkih v trdne kamnine.

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“…This pertains particularly to a pronounced strength reduction from the external part of an orogen towards its internal parts. As a result, flexural foreland basins develop on the strong lithosphere of external zones of orogens, whereas on low strength lithosphere of their internal zones pullapart basins can develop (Nemes et al, 1997Roure, 2008). The effects of lateral flexural strength variations of the lithosphere of foreland basins were explored by a modelling study that was carried out along a transect through the NE Pyrenees that is well constrained by crustal-scale seismic control and an extensive field-derived database (Verges et al, 1995).…”

Section: Compressional Basins: Lateral Variations In Flexural Behaviomentioning

confidence: 99%

Achievements and Challenges in Sedimentary Basin Dynamics: A Review

Roure

Cloetingh²,

Scheck‐Wenderoth

et al. 2009

New Frontiers in Integrated Solid Earth Sciences

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Thanks to a continuous effort for unravelling geological records since the early days of coal and petroleum exploration and water management, the architecture and chrono-litho-stratigraphy of most sedimentary basins has been accurately described by means of conventional geological and geophysical studies, using both surface (outcrops) and subsurface (exploration wells and industry seismic reflection profiles) data. However, the understanding of the early development and long term evolution of sedimentary basins usually requires the integration of even more data on the deep Earth, as well as quantifications by means of kinematic-sedimentological and thermomechanical modelling approaches coupling both surface and deep processes.In the last twenty years, huge national and international efforts, frequently linking academy and industry, have been devoted to the recording of deep seismic profiles in many intracratonic sedimentary basins and offshore passive margins, thus providing a direct control on the structural configuration of the basement and the architecture of the crust. Seemingly, needs for documenting also the current thickness of the mantle lithosphere and the fate of subducted lithospheric slabs have led to the development of more academic and new tomographic techniques. When put together, these various techniques now provide a direct access to the bulk 3D architecture of sedimentary basins, crystalline basement and Moho, as well as underlying mantle lithosphere. Inherited structures, anisotropies in the composition of the sediments, crust and underlying mantle as well as thermicity and phase transitions are now taken into account when predicting the localization of deformation in the lithosphere during compression and extension episodes, and reconstructing the geodynamic evolution of rift basins, passive margins or even foreland fold-and-thrust belts.Source to sink studies also provide accurate estimates of sedimentary budget at basin-scale. Extensive use of low temperature chrono-thermometers and coupled kinematic, sedimentological and thermal models allow a precise control on the amount and timing of erosion and unroofing of source areas, but also the reconstruction of the sedimentary burial, strata architecture and litho-facies distribution in the sink areas.Coupling deep mantle processes with erosion and climate constitutes a new challenge for understanding the present topography, morphology and long term evolution of continents, especially in such sensitive areas as the near shore coastal plains, low lands and intramountain valleys which may be subject to devastating flooding and landslides.In addition to the search for hydrocarbon resources, other societal needs such as CO 2 storage and underground water management will benefit from upgraded basin modelling techniques. New 2D and 3D basin modelling tools are progressively developed, coupling in different ways deep thermo-mechanic processes of the mantle (asthenosphere and lithosphere), geomechanics of the upper crust and sediments (compactio...

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The Klagenfurt Basin in the Eastern Alps: an intra-orogenic decoupled flexural basin?

Cited by 40 publications

References 13 publications

Distribution, geometry, age and origin of overdeepened valleys and basins in the Alps and their foreland

Distribution, geometry, age and origin of overdeepened valleys and basins in the Alps and their foreland

Longitudinal profies of torrential channels in the Western Karavanke mountains

Achievements and Challenges in Sedimentary Basin Dynamics: A Review

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