Discovery of Lower Cretaceous hydrothermal vent complexes in a late rifting setting, southern North Sea: insights from 3D imaging

2016 ◽  
Vol 174 (2) ◽  
pp. 233-241 ◽  
Author(s):  
Luka Blažić ◽  
Julien Moreau
Keyword(s):  
North Sea ◽  
Hydrothermal Vent ◽  
Lower Cretaceous ◽  
3D Imaging ◽  
Southern North Sea

scholarly journals A note on the Early Cretaceous biostratigraphy (foraminifera) of borehole 49/24-1 (Shell/Esso) in the southern North Sea

1984 ◽  
Vol 3 (1) ◽  
pp. 1-10 ◽  
Author(s):  
S. Crittenden
Keyword(s):  
North Sea ◽  
Early Cretaceous ◽  
Lower Cretaceous ◽  
Southern North Sea

Abstract. Borehole 49/24-1 (Shell/Esso), which is the reference borehole for the Lower Cretaceous Cromer Knoll Group in the southern North Sea, is subdivided lithostratigraphically and biostratigraphically. The resulting stratigraphy is briefly compared to onshore U.K. outcrop and borehole sections of comparable age and lithofacies. The regional stratigraphical implications for the correlation of offshore and onshore sections of Lower Cretaceous (Albian) strata are briefly discussed.

Exploration play statistics in the Southern North Sea region of The Netherlands and UK

2021 ◽  
pp. SP494-2020-200
Author(s):  
David G. Quirk ◽  
Stuart G. Archer
Keyword(s):  
The Netherlands ◽  
North Sea ◽  
Lower Cretaceous ◽  
Lower Jurassic ◽  
Petroleum Exploration ◽  
Upper Carboniferous ◽  
Northern Margin ◽  
Southern North Sea ◽  
Average Size ◽  
Zechstein Salt

AbstractThis paper presents the historical results of onshore and offshore petroleum exploration in the Anglo-Dutch Basin of the Southern North Sea. A total recoverable resource of 220 tcfe has been discovered within a contiguous area of 85,000km2, 73% of which occurs in The Netherlands. The resource is predominantly gas (207 tcf), sourced from Upper Carboniferous coals, although the youngest play is oil, sourced from Lower Jurassic shales.There are five plays, partitioned by late Permian-age (Zechstein) salt. In terms of discovered resource they are ranked 1) Rotliegend aeolian-fluvial sandstones (443 gas discoveries, 417 bcfe average size), 2) Triassic fluvial sandstones (101 gas discoveries, 140 bcfe average), 3) Lower Cretaceous paralic-shallow marine sandstones (61 oil discoveries, 29 MMboe average), 4) Westphalian fluvial sandstones (70 gas discoveries, 88 bcfe average), and 5) Zechstein carbonates (51 gas discoveries, 83 bcfe average). Although the main Rotliegend fairway is mature, there are probably discoveries yet to be made in the Westphalian and Zechstein plays and possibly within the Triassic and Lower Cretaceous plays. There is also potential to extend the Rotliegend play beyond where it is proven, for example along the northern margin of the basin and towards its centre

Detrital zircon geochronology and heavy mineral analysis as complementary provenance tools in the presence of extensive weathering, reworking and recycling: the Neogene of the southern North Sea Basin

2021 ◽  
pp. 1-13
Author(s):  
Jasper Verhaegen ◽  
Hilmar von Eynatten ◽  
István Dunkl ◽  
Gert Jan Weltje
Keyword(s):  
North Sea ◽  
Chemical Weathering ◽  
Heavy Mineral ◽  
Mineral Analysis ◽  
Provenance Analysis ◽  
Detrital Zircon Geochronology ◽  
Southern North Sea ◽  
Variable Heavy ◽  
Mineral Data ◽  
Heavy Mineral Analysis

Abstract Heavy mineral analysis is a long-standing and valuable tool for sedimentary provenance analysis. Many studies have indicated that heavy mineral data can also be significantly affected by hydraulic sorting, weathering and reworking or recycling, leading to incomplete or erroneous provenance interpretations if they are used in isolation. By combining zircon U–Pb geochronology with heavy mineral data for the southern North Sea Basin, this study shows that the classic model of sediment mixing between a northern and a southern source throughout the Neogene is more complex. In contrast to the strongly variable heavy mineral composition, the zircon U–Pb age spectra are mostly constant for the studied samples. This provides a strong indication that most zircons had an initial similar northern source, yet the sediment has undergone intense chemical weathering on top of the Brabant Massif and Ardennes in the south. This weathered sediment was later recycled into the southern North Sea Basin through local rivers and the Meuse, leading to a weathered southern heavy mineral signature and a fresh northern heavy mineral signature, yet exhibiting a constant zircon U–Pb age signature. Thus, this study highlights the necessity of combining multiple provenance proxies to correctly account for weathering, reworking and recycling.

scholarly journals Macrofauna as a major driver of bentho‐pelagic exchange in the southern North Sea

2021 ◽  
Author(s):  
Andreas Neumann ◽  
Justus E. E. Beusekom ◽  
Annika Eisele ◽  
Kay‐Christian Emeis ◽  
Jana Friedrich ◽  
...  
Keyword(s):  
North Sea ◽  
Southern North Sea

Organic matter characterization of the Lower Cretaceous tight reservoirs in the Danish North Sea

2021 ◽  
Vol 238 ◽  
pp. 103714
Author(s):  
Arka Rudra ◽  
Hamed Sanei ◽  
H.P. Nytoft ◽  
H.I. Petersen ◽  
Carlette Blok ◽  
...  
Keyword(s):  
Organic Matter ◽  
North Sea ◽  
Lower Cretaceous ◽  
Tight Reservoirs
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