Maturation of organic matter in neogene sediments from the Aderklaa oilfield, Vienna Basin, Austria

1985 ◽  
Vol 34 (2) ◽  
pp. 143-158 ◽  
Author(s):  
W. D. Johns ◽  
J. Hoefs
Keyword(s):  
Organic Matter ◽  
Vienna Basin ◽  
Neogene Sediments

scholarly journals Late Badenian foraminifers from the Vienna Basin (Central Paratethys): stable isotope study and paleoecological implications

2009 ◽  
Vol 60 (1) ◽  
pp. 59-70 ◽  
Author(s):  
Patrícia Kováčová ◽  
Natália Hudáčková
Keyword(s):  
Organic Matter ◽  
Stable Isotope ◽  
Water Column ◽  
Middle Miocene ◽  
Vienna Basin ◽  
Central Paratethys ◽  
Globigerina Bulloides ◽  
Isotope Study ◽  
Vital Effects ◽  
Stable Isotope Study

Late Badenian foraminifers from the Vienna Basin (Central Paratethys): stable isotope study and paleoecological implicationsPaleoecological interpretations based on stable isotope study of benthic (Uvigerina semiornata) and planktonic (Globigerina bulloides, Globigerinoides trilobus) foraminiferal shells from the Paratethys Vienna Basin (southwestern Slovakia) are presented. The study was performed on sediments of the Devínska Nová Ves-clay pit deposited during the Middle and Late Badenian (Middle Miocene). Our δ13C data show an enhanced nutrient input to the water column and the organic matter accumulation at the bottom of the Vienna Basin. The remineralization of accumulated organic matter on the sea floor resulted in the formation of oxygen-depleted zones, where no oxic indicators but the oxygen-deficiency tolerant species were found. Positive benthic δ18O signal can be attributed to the influence of the global cooling recognized in the world-ocean during the Middle Miocene. At the same time, variations observed in the water column are interpreted as reflecting the local temperature and salinity changes resulting from the fluvial and rain inflow. The differences between surface and bottom water temperature reflect the stratification of the water column. Such stratification might be related to the isolation process of Central Paratethys in the Badenian. This study confirms that δ13C and δ18O are not always in isotopic equilibrium with the ambient water but are also influenced by vital effects (respiration, symbiont photosynthesis …). The vital effects led to the incorporation of isotopically light metabolic CO2intoGlobigerina bulloidesresulting in high similarity between δ13C values ofUvigerinaandGlobigerina. It has been shown that the extremely high δ13C and very low δ18O ofGlobigerinoides trilobusclearly imply the influence of algal photosymbionts.

scholarly journals Geophysical and geological interpretation of the Vienna Basin pre-Neogene basement (Slovak part of the Vienna Basin)

2019 ◽  
Vol 70 (5) ◽  
pp. 418-431 ◽  
Author(s):  
Lenka Šamajová ◽  
Jozef Hók ◽  
Tamás Csibri ◽  
Miroslav Bielik ◽  
František Teťák ◽  
...  
Keyword(s):  
Bohemian Massif ◽  
Sedimentary Cover ◽  
Eastern Alps ◽  
Borehole Data ◽  
Geological Structures ◽  
Vienna Basin ◽  
Geological Interpretation ◽  
Neogene Sediments ◽  
Bottom To Top ◽  
Density Modelling

Abstract The Vienna Basin is situated at the contact of the Bohemian Massif, Western Carpathians, and Eastern Alps. Deep borehole data and an existing magnetotelluric profile were used in density modelling of the pre-Neogene basement in the Slovak part of the Vienna Basin. Density modelling was carried out along a profile oriented in a NW–SE direction, across the expected contacts of the main geological structures. From bottom to top, four structural floors have been defined. Bohemian Massif crystalline basement with the autochthonous Mesozoic sedimentary cover sequence. The accretionary sedimentary wedge of the Flysch Belt above the Bohemian Massif rocks sequences. The Mesozoic sediments considered to be part of the Carpathian Klippen Belt together with Mesozoic cover nappes of Alpine and Carpathian provenance are thrust over the Flysch Belt creating the third structural floor. The Neogene sediments form the highest structural floor overlying tectonic contacts of the Flysch sediments and Klippen Belt as well as the Klippen Belt and the Alpine/Carpathians nappe structures.

Biostratigraphic correlation of Miocene drillings in the Vienna Basin (Austria) - Integrated Neogene stratigraphy of the largest onshore petroleum province in Central Europe (Vienna Basin, Austria)

2020 ◽  
Author(s):  
Matthias Kranner ◽  
Mathias Harzhauser ◽  
Oleg Mandic ◽  
Werner E. Piller ◽  
Stjepan Ćorić ◽  
...  
Keyword(s):  
Cross Section ◽  
Middle Miocene ◽  
Fault System ◽  
3D Seismic ◽  
Calcareous Nannoplankton ◽  
Vienna Basin ◽  
Pull Apart Basin ◽  
Complex Fault ◽  
Neogene Sediments ◽  
Oil Company

<p>Numerous boreholes of the OMV oil company penetrate the northern Vienna Basin (VB) and several detailed analyses have been conducted on these drilling for years. Despite the effort of decades, the distribution and correlation of Neogene sediments throughout the basin remained ambiguous, due to the complex fault system of the VB. To resolve remaining issues of the Neogene deposits of the area OMV initiated detailed integrative stratigraphic analyses, combining biostratigraphical, lithological, modern 3D seismic- and geophysical data.</p><p>Paleontological analysis with main focus on micropaleontology, especially foraminifers, of 46 wells (more than 650 samples) of the northern Vienna Basin have been conducted and help to create a well resolved stratigraphic north – south cross-section of the Neogene units. Of particular interest were lower and middle Miocene (Ottnangian, Karpatian, Badenian and Sarmatian) units. Hardly known and described were the patchy lower Badenian deposits and the much more complex, than previously expected, middle Badenian units. Foraminiferal analysis revealed about 50.000 specimens belonging to 228 species and an allocation to local ecozones, biostratigraphic zonations and ecological reconstructions were established.</p><p>Additionally, 50 samples have been analyzed for calcareous nannoplankton which showed extreme reworking throughout all successions.</p><p>Some samples displayed the underlying Mesozoic limestones and cutting samples of one well brought insights into the Cenozoic underling Rhenodanubian Flysch units of the Vienna Basin This huge and stratigraphic long ranging set of data did not just reveal major sedimentation gaps during the formation of the modern pull-apart basin, but also provided the opportunity to create a framework for a modern sequence stratigraphy re-assessment of the Vienna Basin.</p><p>Furthermore, a formalization of widely used formations in literature will be established in later steps of this project.</p><p>This project was financed by the OMV-AG.</p>

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