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

Jarsve, Erlend M.; Eidvin, Tor; Nystuen, Johan Petter; Faleide, Jan Inge; Gabrielsen, Roy H.; Thyberg, B.

doi:10.1017/s0016756814000570

Cited by 6 publications

(8 citation statements)

References 74 publications

(169 reference statements)

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“…According to Eidvin et al (2013d), it is obvious, from seismic interpretation, that wells 2/2-1, 2/2-2 and 2/3-2 are all situated in a central part of the basin, and the wells contain for the most part finegrained sediments typical of distal deposits (see Figs. 29 & 31;Jarsve et al, 2014). The Vade unit in well 11/10-1 contains much coarser sand and is much thicker than in well 2/2-2.…”

Section: The Reason Why We Define Two New Supplementary Reference Sec...mentioning

confidence: 98%

“…The results of these investigations are thoroughly documented in scientific papers and reports of which a majority are posted on the NPD's web pages. These include: Eidvin (2005Eidvin ( , 2009Eidvin ( , 2016aEidvin ( , b, c, 2018aEidvin ( , b, 2019, Eidvin & Nagy (1999), Eidvin & Rundberg (2001, 2016b, Eidvin & Øverland (2009), Eidvin et al (1993Eidvin et al ( , 1998aEidvin et al ( , b, c, 1999Eidvin et al ( , 2000Eidvin et al ( , 2013aEidvin et al ( , b, c, 2019Eidvin et al ( , 2020, Jarsve et al (2014), Riis et al (2004) and Rundberg & Eidvin (2005, 2016a. Syntheses of most of these publications are published in the comprehensive interactive NPD Bulletin 10 (Eidvin et al, 2013d) and in the paper of Eidvin et al (2014).…”

Section: Nordland Ridgementioning

confidence: 99%

“…Deltaic sequences prograded into the deep basin from the Shetland Platform and western Scandinavia. Progradation and subsidence continued in the Oligocene and Miocene, but sandy sediments were more confined to depocentres which varied through time (Eidvin & Rundberg, 2001Gregersen & Johannessen, 2007;Jarsve et al, 2014;Rundberg & Eidvin, 2005).…”

Section: The North Sea Basinmentioning

confidence: 99%

“…The Viking Graben stratigraphy includes the Frigg Formation (lower Eocene) and the Grid Formation (mainly middle to upper Eocene). Parts of the Oligocene deposits in the Norwegian-Danish Basin also contain sandy sediments (Vade Formation; Eidvin & Rundberg, 2007;Eidvin et al, 2013d;Jarsve et al, 2014). The main part of the Oligocene deposits in the northwestern and northeastern North Sea consists of sandy sediments (Ull and Berle formations; Rundberg & Eidvin, 2005;Eidvin et al, 2013d).…”

Section: Lithologymentioning

confidence: 99%

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A revised lithostratigraphic scheme for the Eocene to Pleistocene succession on the Norwegian continental shelf

Eidvin¹,

Riis²,

Brekke³

et al. 2022

NJG

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Introduction and backgroundA formal lithostratigraphic nomenclature of the pre-Permian to the upper Miocene/lower Pliocene for the central and northern North Sea was published by Deegan & Scull (1977). A revision of the Cretaceous and Cenozoic parts of the nomenclature was established by Isaksen & Tonstad (1989). Dalland et al. (1988) introduced a lithostratigraphic nomenclature for the Triassic to Quaternary of the mid-and northern Norwegian continental shelf. A "Lithostratigraphy of the Paleogene-lower Neogene succession of the Danish North Sea" was published by Schiøler et al. (2007). Subsequently, Gradstein et al. (2010) have published an informal lithostratigraphic nomenclature for the Mesozoic and Cenozoic of the North Sea, Norwegian Sea, Barents Sea and Svalbard (stratigraphic database). However, they introduced no new formal lithostratigraphic units. The present publication presents a revision of the Eocene to Pleistocene lithostratigraphies of Isaksen & Tonstad (1989) and Dalland et al. (1988; see Figs. 1 and 2) for the Norwegian central and northern North Sea, the Norwegian Sea and the western part of the Barents Sea.When drilling exploration wells, the petroleum companies commonly sample the Eocene to Pleistocene sediments with drill cuttings. Generally, the post-Eocene deposits have been far less sampled and investigated than the older sediments, which have been the main target for hydrocarbon exploration. The sampling programme is usually considerably less dense than in the deeper sections, e.g., every ten metres compared to every three metres in reservoirs. Only a small number of wells have been sampled with sidewall cores and short conventional cores, and the number of cored shallow stratigraphic boreholes covering the Eocene to Pleistocene is limited. The conventional cores are used mainly for geotechnical investigations. Contracted biostratigraphical consultants usually execute routine investigations. However, the samples are commonly investigated with large spacing and limited effort

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Section: The Reason Why We Define Two New Supplementary Reference Sec...mentioning

confidence: 98%

Section: Nordland Ridgementioning

confidence: 99%

Section: The North Sea Basinmentioning

confidence: 99%

Section: Lithologymentioning

confidence: 99%

See 2 more Smart Citations

A revised lithostratigraphic scheme for the Eocene to Pleistocene succession on the Norwegian continental shelf

Eidvin¹,

Riis²,

Brekke³

et al. 2022

NJG

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“…Moreover, planktic foraminifera and calcareous nannofossil assemblages are very impoverished in the Oligocene deposits in the NE North Sea basin (e.g. King et al, 2016;Śliwińska et al, 2012) in relation to the Tethys (Coccioni et al, 2018;Sliwińska et al, 2014a, b) or the eastern North Atlantic (e.g. de Kaenel and Villa, 1996;Snyder and Waters, 1985).…”

Section: Introductionmentioning

confidence: 99%

Early Oligocene dinocysts as a tool for palaeoenvironment reconstruction and stratigraphical framework – a case study from a North Sea well

Śliwińska¹

2019

J. Micropalaeontol.

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Abstract. The lower Oligocene (Rupelian) successions are climate record archives of the early icehouse world in the Cenozoic. Even though the number of studies focussing on the generally cold Oligocene is increasing, little is known about climatic variations in the mid-latitudes to high latitudes of the Northern Hemisphere. One of the major obstacles is the lack of stratigraphically complete uppermost Eocene to Oligocene successions in these regions. This study focusses on dinoflagellate cysts (dinocysts) from a thick nearly complete Rupelian succession in the Syracuse Oils Norge A/S well 11/10-1 drilled in 1969 in the Norwegian part of the North Sea basin. The well provides a record of mid-latitude dinocyst assemblages, which yield key biostratigraphical and palaeoenvironmental information. All the analyses were undertaken on ditch cutting samples. The dinocyst assemblages confirm that the well penetrates about 600 m of Rupelian sediments and (as supported by correlation with the Nini-1 well) that the lowermost Rupelian (below the top or the last occurrence of Areosphaeridium diktyoplokum) is expanded. These assemblages also indicate the presence of two hiatuses: the first extends from the Lutetian to the Priabonian (equivalent to the D9nb–D12nb zones), and the second spans the Rupelian–Chattian boundary (equivalent to the D14nb subzone or the NSO-5 zone). Despite the risk of caving, the dinocyst assemblages support the existing sequence stratigraphic framework. The assemblages reflect a clear transition from distal to proximal deposition in the vicinity of the site (across the regional seismic sequences OSS-1 – OSS meaning Oligocene seismic sequence – to OSS-2). The proximal deltaic deposits of the OSS-2 regressive system tract (RST) are characterised by pulses of high sea-surface productivity and pronounced shifts in the dinocyst assemblages, reflecting a highly dynamic environment in a restricted marine to marginal marine setting. The Rupelian succession penetrated by well 11/10-1 yields one new species, Areoligera? barskii sp. nov., which is described here in detail. The cold-water-tolerant dinocyst Svalbardella cooksoniae is present in two intervals in the studied succession. These intervals are related to the early Oligocene cooling maxima (the Oi-1a and the Oi-2 events). Furthermore, these two intervals correlate with two local sequence boundaries, suggesting that they are most probably of glacioeustatic origin. From these observations, I postulate that the early icehouse climate played an important role in the depositional development of the Oligocene succession in the North Sea basin. Even though the Eocene–Oligocene transition interval is not complete (i.e. Lutetian to Priabonian is either missing or condensed), well 11/10-1 merits high-resolution studies of the early icehouse climate for the North Sea region. Although any detailed studies should ideally be undertaken on conventional cores instead of ditch cuttings, no such samples spanning the Eocene–Oligocene transition exist in this area.

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Oligocene to Lower Pliocene deposits of the Norwegian continental shelf, Norwegian Sea, Svalbard, Denmark and their relation to the uplift of Fennoscandia: A synthesis

Eidvin¹,

Riis²,

Rasmussen

2014

Marine and Petroleum Geology

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

Cited by 6 publications

References 74 publications

A revised lithostratigraphic scheme for the Eocene to Pleistocene succession on the Norwegian continental shelf

A revised lithostratigraphic scheme for the Eocene to Pleistocene succession on the Norwegian continental shelf

Early Oligocene dinocysts as a tool for palaeoenvironment reconstruction and stratigraphical framework – a case study from a North Sea well

Oligocene to Lower Pliocene deposits of the Norwegian continental shelf, Norwegian Sea, Svalbard, Denmark and their relation to the uplift of Fennoscandia: A synthesis

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