Petroleum assessment of the Mesozoic succession in the Höllviken Graben and on the Skurup Platform, southern Sweden

Ahlberg, Anders; Olsson, Ingela

doi:10.1080/11035890101232085

Cited by 4 publications

(5 citation statements)

References 18 publications

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“…Between 1818 and 2065 m depth, the sequence is dominated by pre-Rhaetian Triassic redbeds deposited in a continental setting (Ahlberg and Olsson, 2001). The interval contains alternating layers of silty claystone and poorly sorted arkosic sandstone occasionally intercalated with conglomerates.…”

Section: Geological Settingmentioning

confidence: 99%

“…1). Throughout the Mesozoic, tectonic movements were accompanied by intense faulting in the region, giving rise to a juxtaposition of individual blocks characterized by different deposition and erosion patterns (Ahlberg and Olsson, 2001). At the interface between Sweden and Denmark, the Höllviken half-graben constitutes a southwest tilted basin, flanked to the northeast by the Barsebäck platform.…”

Section: Geological Settingmentioning

confidence: 99%

“…In total, thirteen deep wells were drilled during the prospecting work, as a complement to the seismic surveys carried out in Scania and adjacent offshore areas. From the 1970s to the mid-1980s, additional investigations for hydrothermal energy production and gas storage were performed to the southwest of Lund, resulting in the collection of shallower geological data (Ahlberg and Olsson, 2001).…”

Section: Geological Settingmentioning

confidence: 99%

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Scenario simulations of CO2 injection feasibility, plume migration and storage in a saline aquifer, Scania, Sweden

Chasset

Jarsjö

Erlström

et al. 2011

International Journal of Greenhouse Gas Control

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Section: Geological Settingmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

See 1 more Smart Citation

Scenario simulations of CO2 injection feasibility, plume migration and storage in a saline aquifer, Scania, Sweden

Chasset

Jarsjö

Erlström

et al. 2011

International Journal of Greenhouse Gas Control

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“…1) and was drilled by the Geological Survey of Sweden (SGU) between 1948 and 1950 (Norling 1981;Vajda 2001). The core intersects Upper Triassic, Jurassic sediments and Cretaceous poorly consolidated glauconitic sandstones (Ahlberg & Olsson 2001;Vajda 2001). Megaspores were re-studied from samples from depths of 1570-1560 m (slide numbers: S079701, S079702, S079713-S079716, S079718 to S079728) and 1531 m (slide numbers: S079741 to S079743).…”

Section: Drillcore Svedala I 1570-1560 M (Rhaetian) 1531 M (Hettangian)mentioning

confidence: 99%

Megaspores from the Late Triassic‒Early Jurassic of southern Scandinavia: taxonomic and biostratigraphic implications

Peng

Slater

Vajda

2021

GFF

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Here we investigate megaspores from 10 Triassic-Jurassic localities of southern Sweden and Bornholm, Denmark, based on collections housed in the Swedish Museum of Natural History. We identify and describe 19 megaspore taxa belonging to three stratigraphically constrained assemblages, representing the Rhaetian, Hettangian and Pliensbachian, respectively. Megaspores are abundant and diverse (12 taxa) in the Rhaetian assemblage. Diversity markedly decreases across the Triassic-Jurassic boundary (TJB), with species richness reducing from 12 to two taxa. The Hettangian assemblage is well-preserved but depauperate, and is overwhelmingly dominated by Nathorstisporites hopliticus. A subsequent recovery of lycopsid diversity followed, recorded by an increase in richness to six taxa in the Pliensbachian assemblage. The disappearance of the hygrophilous and diverse heterosporous lycophyte communities across the TJB, suggests a shift to drier conditions in the earliest Jurassic. This is supported by lithological changes from coal-forming environments in the Rhaetian to sandstone-dominated fluvial-estuarine facies in the Hettangian. Throughout this study, we analysed the megaspores using fluorescence microscopy, which revealed detailed morphological features on specimens that were otherwise opaque under visible light. This non-destructive technique is particularly useful for examining opaque megaspores embedded in permanent mounting media, such as epoxy resin, and may provide new insights into historical megaspore collections elsewhere.

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“…As the burial heat was insufficient, hydrocarbon maturity can only have been achieved locally, possibly in association with faulting and volcanic activity. The faults, however, were also potential escape routes for migrating hydrocarbons (Ahlberg 1996;Ahlberg & Olsson 2001).…”

Section: Diagenesis Thermal History and Petroleum Potentialmentioning

confidence: 99%

The Jurassic of Skåne, southern Sweden

2003

Self Cite

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In Sweden, Jurassic strata are restricted to Skåne and adjacent offshore areas. Jurassic sedimentary rocks predominantly comprise sandy to muddy siliciclastics, with subordinate coal beds and few carbonate-rich beds. During Mesozoic times, block-faulting took place in the Sorgenfrei– Tornquist Zone, a tectonic zone which transects Skåne in a NW–SE direction. The Jurassic depositional environments in Skåne were thus strongly influenced by uplift and downfaulting, and to some extent by volcanism. Consequently, the sedimentary record reveals evidence of numerous transgressions, regressions and breaks in sedimentation. Relative sea-level changes played a significant role in controlling the facies distribution, as deposition mainly took place in coastal plain to shallow shelf environments. The alluvial deposits in Skåne include floodplain palaeosols, autochthonous coals, overbank sandstones, and stream channel pebbly sandstones. Restricted marine strata comprise intertidal heteroliths with mixed freshwater and marine trace fossil assemblages, and intertidal delta distributary channel sandstones. Shallow marine sediments encompass subtidal and shoreface sandstones with herringbone structures, and bioturbated mudstones with tempestite sandstones. Offshore deposits typically comprise extensively bioturbated muddy sandstones. Floral remains, palaeopedology, clay mineralogy and arenite maturity indicate a warm and humid climate in Skåne throughout the Jurassic, possibly with slightly increasing aridity towards the end of the period. Most Jurassic strata in Skåne have been subjected to mild burial diagenesis, and the petroleum generative window has rarely been reached.

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Petroleum assessment of the Mesozoic succession in the Höllviken Graben and on the Skurup Platform, southern Sweden

Cited by 4 publications

References 18 publications

Scenario simulations of CO2 injection feasibility, plume migration and storage in a saline aquifer, Scania, Sweden

Scenario simulations of CO2 injection feasibility, plume migration and storage in a saline aquifer, Scania, Sweden

Megaspores from the Late Triassic‒Early Jurassic of southern Scandinavia: taxonomic and biostratigraphic implications

The Jurassic of Skåne, southern Sweden

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