The data set includes organic geochemical data, quantification of selected PAHs from the Schandelah core.
The data set includes organic geochemical data, quantification of selected PAHs from the Schandelah core.
The data set includes palynomorph darkening index (PDI) values based on RGB measurements from individual pollen grains expressed as %greyscale value (0 = transparant and 100% = completely black opaque). The values are averages of 3 measurements per palynomorph. PDI data is provided for 4 cores: Schandelah-1A, Prees-2C, Elvange and Stenlille-4.
The data set includes bulk organic C-isotope data for the Elvange core (Trier-Luxemburg Basin).
The data set includes palynomorph darkening index (PDI) values based on RGB measurements from individual pollen grains expressed as %greyscale value (0 = transparant and 100% = completely black opaque). The values are averages of 3 measurements per palynomorph. PDI data is provided for 4 cores: Schandelah-1A, Prees-2C, Elvange and Stenlille-4.
Within the framework of the GEOSTOR Project, the CO2 storage potential of the Jurassic succession in the German Central Graben was analysed. Twelve potential trap structures were initially mapped along the base of the Kimmeridge Clay Formation, which serves as the primary seal for potential reservoir sandstones within the Central Graben Subgroup. The Kimmeridge Clay Formation is generally continuously distributed across the German Central Graben, with only localized penetrations by rising salt diapirs. In contrast, the Central Graben Subgroup, serving as a potential reservoir unit, exhibits an uneven distribution across the area, limiting the presence and continuity of reservoir rocks within each trap structure. To further delineate the spatial extent of the mapped reservoir structures, the base of the Central Graben Subgroup was used as an additional reference layer. Due to the intermittent nature of Jurassic sandstones within the Central Graben Subgroup, a subsequent analysis classified each structure based on borehole data to confirm the presence of reservoir sands. Structures were categorized as ‘proven,’ ‘not present,’ or ‘uncertain’ depending on sandstone availability and continuity within the trap. All mapped reservoir structures are buried at depths ranging from 2225 to 3043 meters (apex depth) and are considered closed systems, situated within a complex structural network of salt diapirs, faults, and pinch-outs. Capacity calculations were conducted following the method outlined by Fuhrmann et al. (2024), and the horizons used for mapping are based on the work of Müller et al. (2023) and Thöle et al. (2021). Fuhrmann, A., Knopf, S., Thöle, H., Kästner, F., Ahlrichs, N., Stück, H.L., Schlieder-Kowitz, A., Kuhlmann, G., (2024). CO2 storage potential of the Middle Buntsandstein Subgroup-German sector of the North Sea. International Journal of Greenhouse Gas Control 136. Müller, S.M., Jähne-Klingberg, F., Thöle, H., Jakobsen, F.C., Bense, F., Winsemann, J. & Gaedicke, C. (2023). Jurassic to Lower Cretaceous tectonostratigraphy of the German Central Graben, southern North Sea. – Netherlands Journal of Geosciences, 102: e4. DOI:10.1017/njg.2023.4 Thöle, H., Jähne-Klingberg, F., Doornenbal, H., den Dulk, M., Britze, P. & Jakobsen F. (2021). Deliverable 3.8 – Harmonized depth models and structural framework of the NL-GER-DK North Sea. GEOERA 3DGEO-EU; 3D Geomodeling for Europe; project number GeoE.171.005. Report.
Storage of CO2 in deep geological formations is one possibility of reducing CO2 emissions from industry that are difficult to avoid. High-quality geological models and capacity estimates are crucial for the successful planning and implementation of safe storage projects. This study analyses the storage potential of the Middle Buntssandstein (Lower Triassic) and Lower to Middle Jurassic within the Exclusive Economic Zone (EEZ) of the German North Sea. Link https://geostor.cdrmare.de/
This image dataset contains results (original top-view and cross-section photographs) obtained from a series of 12 crustal-scale physical analogue modelling experiments performed in the Tectonic Modelling Laboratory (TecLab) at Utrecht University. We employed analogue modelling to study the inversion of extensional basins that are parallel and oblique to their boundaries. The key parameters of this study are: (i) the obliquity angle (0°, 10° or 20°) of shortening in relation to the strike of the initial rift structures; (ii) the basal décollement rheology; and (iii) the rheology of the basin fill. All analogue experiments are rectangular, 2 cm thick and consist of deformable brittle or brittle–ductile layers. Deformable parts in entirely brittle models are made of a homogeneous layer of quartz sand for the initial, non-stretched, pre-rift model crust. The subsequently resulting grabens are filled with syn- to post-extensional sediments of quartz sand, feldspar sand, or glass beads. Variations to these setups entail either a brittle layer of glass beads at the base of the above described brittle crust, or, for brittle-ductile models, a viscous layer of PDMS silicone putty with fillers. All experiments are built on one fixed above two mobile plastic sheets, their transition is pre-defining velocity discontinuities (VDs). In a first stage, deformation is induced in all models by two electric motors pulling the two mobile plastic sheets in opposite directions parallel to the backstop. These sheets are then fixed once the extensional phase is finished. VDs positioned both orthogonally and obliquely with respect to the backstop allow graben structures to form at angles of 0°, 10° and 20° to the subsequent shortening direction. In a second stage, a rigid backstop moves into the model to create compressive deformation within the entirely brittle or brittle-ductile layers. Top-view photographs were taken at regular time intervals throughout each experiment (see below for details). Cross-section photographs were taken at the end of each experiment. Therefore, the top-view photographs enable surface deformation to be tracked and analysed through time and space, while the cross-sections demonstrate the overall vertical deformation of each model. For more details about the models, see Sieberer et al. (2023). The properties of the materials used are described in Sieberer et al. (2023), Klinkmüller et al. (2016) and Willingshofer et al. (2018). All models are scaled according to the principles of geometric, rheological, and kinematic similarity between nature and models (Hubbert, 1937; Weijermars & Schmeling, 1986).
Storage of CO2 in deep geological formations is one possibility of reducing CO2 emissions from industry that are difficult to avoid. High-quality geological models and capacity estimates are crucial for the successful planning and implementation of safe storage projects. This study analyses the storage potential of the Middle Buntssandstein (Lower Triassic) and Lower to Middle Jurassic within the Exclusive Economic Zone (EEZ) of the German North Sea. The dataset includes maps of potential storage sites and classifications. Link https://geostor.cdrmare.de/
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