A 2D Basin and Petroleum Systems Modelling Study in an Overthrust Setting - The Alpine Molasse Basin, Austria

Gusterhuber, Juergen; Sachsenhofer, Reinhard F.; Linzer, Hans‐Gert

doi:10.3997/2214-4609.20149547

Cited by 2 publications

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“…The investigation of erosional events in the eastern part of the Alpine Foreland has been initiated in the course of a basin and petroleum systems modelling study in Upper Austria and Salzburg (Gusterhuber et al 2011) which showed that erosion and uplift may have strong effects on timing of generation, charging and preservation of hydrocarbons.…”

Section: Introductionmentioning

confidence: 99%

Neogene uplift and erosion in the Alpine Foreland Basin (Upper Austria and Salzburg)

Gusterhuber¹,

Dunkl²,

Hinsch³

et al. 2012

Geologica Carpathica

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Abstract:In the present paper we apply a multi-technique approach (shale compaction data, seismic stratigraphy, isopach maps, moisture content of lignite, fission track data) to assess timing and amount of uplift and erosion of the Alpine Foreland Basin. The combination of the different techniques allows us to discriminate the effects of two different erosion events during the Neogene: (1) Seismic stratigraphy and isopach maps indicate a Karpatian (Early Miocene) regional tilting of the basin to the west (slope of about 0.5 %) and a minor erosion phase. (2) Moisture content of lignite combined with fission track data provides evidence for extensive regional uplift after deposition of Late Miocene fluvial deposits. It is estimated that sediments, 500 to 900 m thick, have been eroded. Shale compaction data derived from sonic logs indicates additional uplift of the eastern part of the basin (near the river Enns). Here, 300 to 1000 m of sediments were additionally eroded (giving a total erosion of about 1000 to 1900 m!), with a general increase of erosion thickness towards the northeast. While the regional uplift is probably related to isostatic rebound of the Alps after termination of thrusting, the local uplift in the east could be affected by Late Neogene E-W compressional events within the Alpine-Pannonian system. Both, tilting and erosion influence the hydrocarbon habitat in the Molasse Basin (tilting of oil-water contacts, PVT conditions, biodegradation).

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Section: Introductionmentioning

confidence: 99%

Neogene uplift and erosion in the Alpine Foreland Basin (Upper Austria and Salzburg)

Gusterhuber¹,

Dunkl²,

Hinsch³

et al. 2012

Geologica Carpathica

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show abstract

“…Die wesentlichen neuen Erkenntnisse bezüglich der Gasgenese in der Molassezone umfassen: Gas-System: Das relativ trockene, biodegradierte Gas im nordöstlichen Teil der Molassezone tritt in einem Bereich auf, der im Neogen durch starke Hebung gekennzeichnet war 25 . Es bleibt zu untersuchen, inwieweit geänderte Druckbedingungen und hydrodynamische Prozesse zur Modifizierung der Gaszusammensetzung beigetragen haben.…”

Section: Schlussfolgerungen Und Ausblickunclassified

Entstehung von Erdgas in der oberösterreichischen Molassezone: Daten und offene Fragen

Reischenbacher

Sachsenhofer

2011

Berg Huettenmaenn Monatsh

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A 2D Basin and Petroleum Systems Modelling Study in an Overthrust Setting - The Alpine Molasse Basin, Austria

Cited by 2 publications

References 0 publications

Neogene uplift and erosion in the Alpine Foreland Basin (Upper Austria and Salzburg)

Neogene uplift and erosion in the Alpine Foreland Basin (Upper Austria and Salzburg)

Entstehung von Erdgas in der oberösterreichischen Molassezone: Daten und offene Fragen

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