Mesozoic and cenozoic basin configurations in the North Sea

Jarsve, Erlend M.; Faleide, Jan Inge; Gabrielsen, Roy H.; Nystuen, Johan Petter

doi:10.1002/9781118920435.ch15

Cited by 9 publications

(14 citation statements)

References 107 publications

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“…A change in drainage systems in the Oligocene succession is clearly indicated by high kaolinite contents south of Norway (Fig. 9), and it correlates with the occurrence of newly established delta-slope systems off southern Norway in the Oligocene (Danielsen et al 1997;Jarsve et al 2014). The high content of kaolinite south of Norway, seen for the first time in the eastern North Sea Basin, can be followed into the Miocene.…”

Section: Kaolinitementioning

confidence: 84%

“…The high content of kaolinite south of Norway, seen for the first time in the eastern North Sea Basin, can be followed into the Miocene. There seems to be a general shift of high kaolinite content towards the east which is associated with eastwards displacement of the delta-slope systems from the Oligocene to the Miocene (Jarsve et al 2014;Rasmussen et al 2010). The irregular distribution of kaolinite that particularly characterizes the Vejle Fjord Fm.…”

Section: Kaolinitementioning

confidence: 98%

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Distribution of Clay Minerals In the Northern North Sea Basin During the Paleogene and Neogene: A Result of Source-Area Geology and Sorting Processes

Nielsen

Rasmussen

Thyberg

2015

Journal of Sedimentary Research

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Clay-mineral compositions have been analyzed in samples from the Danish, Norwegian, British, and Dutch North Sea sectors and from onshore Denmark and Germany, comprising both wells and outcrops (clay pits and cliff sections). The time slices investigated comprise from the Paleogene, the post-Ekofisk Fm. interval of the Paleocene, the entire Eocene, and the entire Oligocene. The Neogene time slices investigated comprise the following Miocene intervals: the Vejle Fjord Fm., the Klintinghoved Fm., the Arnum Fm., and the Gram Fm. There were not enough samples from offshore wells to make a detailed stratigraphic subdivision of the Paleogene. It was, however, possible to refer Miocene samples to specific lithostratigraphic units. The onshore Danish nomenclature was applied, and seismic sections were used to correlate between wells and outcrops. Existing biostratigraphic data were used to control the stratigraphic interpretation. The distribution of the most dominant clay minerals-smectite, chlorite, kaolinite and illite-are shown on maps comprising the Paleocene, Eocene, Oligocene, and the formations Vejle Fjord Fm., Klintinghoved Fm., Arnum Fm., and Gram Fm. from the Miocene.The investigation has shown that the source-rock composition plays an important role in the clay-mineral content of the sediments. For example, smectite makes up a higher proportion in periods with substantial supply of volcanic material, especially in the Paleocene and early Eocene. In source areas, where metamorphic rocks dominate, chlorite is present in the sediment adjacent to these areas. The illite content in sediments increases where the source area is dominated by granites and/or gneisses. Sorting of the supplied suspended material generally controls the depositional area for the minerals. For example, the larger particles of kaolinite are generally more abundant in nearshore areas, whereas the relatively small smectite particles normally dominate in the central parts of the sedimentary basins. Illite and chlorite are relatively abundant in areas between those rich in smectite, present in the central part of the basin, and those rich in kaolinite, present in the marginal parts of the basin. Climatic conditions during erosion and deposition seem to play an important role, especially in the distribution of chlorite, which is rather sensitive to chemical weathering. This means that chlorite makes up a greater proportion of the sediment in periods with colder climate, such as in the Oligocene and late Miocene.

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Section: Kaolinitementioning

confidence: 84%

Section: Kaolinitementioning

confidence: 98%

Distribution of Clay Minerals In the Northern North Sea Basin During the Paleogene and Neogene: A Result of Source-Area Geology and Sorting Processes

Nielsen

Rasmussen

Thyberg

2015

Journal of Sedimentary Research

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“…The Cretaceous-Paleocene boundary is marked by a change in basin physiography in the study area and elsewhere in the North Sea (Jarsve et al, 2014), marking the transition from finegrained siliciclastic and carbonate dominated deposition in an underfilled basin setting, to regional input of coarse siliciclastic sediments in an overfilled setting (Dmitrieva et al, 2018). For the first time since the Late Jurassic, sediment supply from mainland Norway was higher than the available offshore accommodation, causing the shelf-slope margin to prograde westward (Figure 2).…”

Section: Geological Settingmentioning

confidence: 99%

Manifestation of Tectonic and Climatic Perturbations in Deep-Time Stratigraphy – An Example From the Paleocene Succession Offshore Western Norway

Sømme

Skogseid

Embry³

et al. 2019

Front. Earth Sci.

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“…This probably continued during Miocene time, when the lower Miocene deposits of onshore Denmark were sourced from southern Norway (Olivarius, 2009) and south-westwards sediment dispersal and depocentre migration continued into the Central Graben area (e.g. Jarsve et al 2014).…”

Section: Discussionmentioning

confidence: 99%

The Oligocene succession in the eastern North Sea: basin development and depositional systems

Jarsve

Eidvin²,

Nystuen

et al. 2014

Geol. Mag.

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-The Oligocene sedimentary succession in the eastern North Sea is revised and re-interpreted by applying new state-of-the-art reflection seismic data integrated with new bio-and Sr-stratigraphy data from three key wells in the study area. The Oligocene succession in the eastern North Sea is divided into four transgressive-regressive (T-R) sequences, characterized by non-accretional and/or aggradational transgressive systems tracts and prograding regressive systems tracts. Detailed studies of three wells, including biostratigraphy and Sr analysis, constrain the age relationships between the T-R sequences. Internal clinoform geometry indicates that the sediments were sourced from the present southern Norwegian mainland to the north of the depositional area. The direction of progradation shifted from being SE-directed in the earliest Rupelian (early Oligocene) to S-and SW-directed during Chattian time (late Oligocene). Rapid basin subsidence is indicated by the development of non-accretionary transgressive systems tracts, with subsequent progradation into water depths of hundreds of metres. The creation of accommodation space was out of phase relative to eustatic sealevel changes, and mainly controlled by regional-scale differential vertical movements where uplift and exposure of landmasses of the hinterland (southern Norway) occurred concurrently with basin subsidence. Halokinesis had an intra-basinal influence on the main sediment transport direction, but probably did not contribute much in creation of accommodation space.

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Mesozoic and cenozoic basin configurations in the North Sea

Cited by 9 publications

References 107 publications

Distribution of Clay Minerals In the Northern North Sea Basin During the Paleogene and Neogene: A Result of Source-Area Geology and Sorting Processes

Distribution of Clay Minerals In the Northern North Sea Basin During the Paleogene and Neogene: A Result of Source-Area Geology and Sorting Processes

Manifestation of Tectonic and Climatic Perturbations in Deep-Time Stratigraphy – An Example From the Paleocene Succession Offshore Western Norway

The Oligocene succession in the eastern North Sea: basin development and depositional systems

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