scholarly journals A southern North Sea Miocene dinoflagellate cyst zonation

2004 ◽  
Vol 83 (4) ◽  
pp. 267-285 ◽  
Author(s):  
D.K. Munsterman ◽  
H. Brinkhuis
Keyword(s):  
The Netherlands ◽  
North Sea ◽  
North Atlantic ◽  
The South ◽  
Dinoflagellate Cyst ◽  
South Eastern ◽  
Southern North Sea ◽  
Age Model

AbstractAn integrated stratigraphical analysis emphasizing organic-walled dinoflagellate cyst (dinocyst) distribution has been carried out on multiple boreholes penetrating the Miocene in the subsurface of the Netherlands (southern North Sea Basin). The bulk of the investigated successions is attributed to the Breda Formation, a regional lithostatigraphical unit most complete in the south-eastern part of the Netherlands. In concert with a first regional integrated bio (chrono) sequence-stratigraphical framework, fourteen informal dinocyst zones for the southern North Sea Miocene (SNSM), and three subzones are proposed for the Breda Formation. By also integrating (chrono)stratigraphic information from Mediterranean and North Atlantic dinocyst studies a first ever detailed age-model is here proposed for the Miocene in the subsurface of the Netherlands.

scholarly journals Organic-walled dinoflagellate cyst stratigraphy in an expanded Oligocene–Miocene boundary section in the eastern North Sea Basin (Frida-1 Well, Denmark) and correlation from basinal to marginal areas

2007 ◽  
Vol 26 (1) ◽  
pp. 1-17 ◽  
Author(s):  
Karen Dybkjær ◽  
Erik Skovbjerg Rasmussen
Keyword(s):  
The Netherlands ◽  
North Sea ◽  
Seismic Data ◽  
Well Logs ◽  
Dinoflagellate Cyst ◽  
Southern North Sea ◽  
Marginal Areas

Abstract. The organic-walled dinoflagellate cyst (dinocyst) assemblages in an unusually thick (>800m) Oligocene–Miocene boundary succession from the eastern North Sea Basin (the Frida-1 Well) were studied. Six successive dinocyst assemblages are described: the Wetzeliella gochtii Assemblage (early Chattian), the Distatodinium biffii Assemblage (Chattian), the Deflandrea phosphoritica Assemblage (latest Chattian), the Homotryblium spp. Assemblage (early Aquitanian), the Caligodinium amiculum Assemblage (Aquitanian) and the Cordosphaeridium cantharellus Assemblage (latest Aquitanian to early Burdigalian). The dinocyst assemblages are compared with informal dinocyst zonations proposed for the southern North Sea Basin (Germany, Belgium and the Netherlands).A correlation of the expanded basinal succession in Frida-1 with the marginal marine succession found onshore Jylland, based on the dinocyst stratigraphy combined with well logs and seismic data, is proposed. This correlation confirms earlier proposed datings of the onshore deposits and the presence of several hiati. Furthermore, the correlation made it possible to subdivide the succession in Frida-1 into the sequences A–C, as defined onshore. The Mi-1 glaciation event and thus the Oligocene–Miocene boundary are proposed to correlate to the boundary between sequences A and B.

scholarly journals A new species of rorqual whale (Cetacea, Mysticeti, Balaenopteridae) from the Late Miocene of the Southern North Sea Basin and the role of the North Atlantic in the paleobiogeography of Archaebalaenoptera

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e8315 ◽  
Author(s):  
Michelangelo Bisconti ◽  
Dirk K. Munsterman ◽  
René H.B. Fraaije ◽  
Mark E.J. Bosselaers ◽  
Klaas Post
Keyword(s):  
New Species ◽  
The Netherlands ◽  
North Sea ◽  
North Atlantic ◽  
Late Miocene ◽  
North Atlantic Ocean ◽  
Center Of Origin ◽  
Southern North Sea ◽  
The North ◽  
The North Atlantic

Background The rich fossil record of rorqual and humpback whales (Cetacea, Mysticeti, Balaenopteridae) is mainly characterized by monotypic genera since genera including more than one species are extremely rare. The discovery of new species belonging to known genera would be of great importance in order to better understand ancestor-descendant relationships and paleobiogeographic patterns in this diverse group. Recent discoveries in the southern North Sea Basin yielded a number of reasonably well preserved fossil balaenopterids from the Late Miocene; this sample includes a balaenopterid skull from Liessel, The Netherlands, which shares key characters with Archaebalaenoptera castriarquati from the Pliocene of Mediterranean. This skull is permanently held by Oertijdmuseum, Boxtel, The Netherlands, with the number MAB002286 and is investigated here. Methods A detailed comparative anatomical analysis of the skull MAB002286 is performed in order to understand its relationships. The age of the skull is determined by dinocyst analysis of the associated sediment. A paleobiogeographic analysis is performed to understand paleobiogeographic patterns within the balaenopterid clade the new skull belongs to. Results Our work resulted in the description of Archaebalaenoptera liesselensis new species. The geological age of the holotype skull is between 8.1 and 7.5 Ma. The phylogenetic relationships of this species reveals that it is monophyletic with Archaebalaenoptera castriarquati from the Italian Pliocene. Moreover, in combination with a more basal species of Archaebalaenoptera from the late Miocene of Peru, our paleobiogeographic analysis suggests that the North Atlantic ocean played a major role as a center of origin of a number of balaenopterid clades including Protororqualus, Archaebalaenoptera and more advanced balaenopterid taxa. From a North Atlantic center of origin, two dispersal events are inferred that led to the origins of Archaebalaenoptera species in the South Pacific and Mediterranean. The distribution of Archaebalaenoptera was antitropical in the late Miocene. The role played by the Mediterranean salinity crisis is also investigated and discussed.

scholarly journals A new age model for the Pliocene of the southern North Sea basin: a multi-proxy climate reconstruction

2020 ◽  
Vol 16 (2) ◽  
pp. 523-541 ◽  
Author(s):  
Emily Dearing Crampton-Flood ◽  
Lars J. Noorbergen ◽  
Damian Smits ◽  
R. Christine Boschman ◽  
Timme H. Donders ◽  
...  
Keyword(s):  
North Sea ◽  
North Atlantic ◽  
Climate Reconstruction ◽  
Climate Modelling ◽  
Late Pliocene ◽  
Southern North Sea ◽  
The North ◽  
Lipid Biomarker ◽  
Age Model ◽  
The North Atlantic

Abstract. The mid-Piacenzian Warm Period (mPWP; 3264–3025 ka) represents the most recent interval in Earth's history where atmospheric CO2 levels were similar to today. The reconstruction of sea surface temperatures (SSTs) and climate modelling studies has shown that global temperatures were 2–4 ∘C warmer than present. However, detailed reconstructions of marginal seas and/or coastal zones, linking the coastal and continental climate evolution, are lacking. This is in part due to the absence of precise age models for coastal sedimentary successions, as they are generally formed by dynamic depositional systems with varying sediment and freshwater inputs. Here, we present a multi-proxy record of Pliocene climate change in the coastal southern North Sea basin (SNSB) based on the sedimentary record from borehole Hank, the Netherlands. The marginal marine setting of the Hank borehole during the late Pliocene provides an excellent opportunity to correlate marine and terrestrial signals due to continental sediment input mainly derived from the proto-Rhine–Meuse River. We improve the existing low-resolution palynology-based age model for the Hank borehole using stable oxygen and carbon isotope (δ18O and δ13C) measurements of the endobenthic foraminifera species Cassidulina laevigata, integrated with biochrono- and seismostratigraphy. Identification of hiatuses and freshwater effects in the record allows us to isolate glacial–interglacial climate signals in order to tune the endobenthic oxygen stable isotope record to a global benthic δ18O stack. This results in a tuned age framework for the SNSB for the late Pliocene (∼3190–2770 ka). Our multi-proxy climate reconstruction for the interval which covers part of the mPWP (∼3190–3000 ka) shows a strong agreement between lipid biomarker and palynology-based terrestrial temperature proxies, which suggest a stable climate, 1–2 ∘C warmer than present. In the marine realm, however, biomarker-based SSTs show a large range of variation (10 ∘C). Nevertheless, the fluctuation is comparable to other SST records from the North Atlantic and Nordic Seas, suggesting that a common factor, possibly ocean circulation, exerted a strong influence over SSTs in the North Atlantic and the North Sea at this time.

scholarly journals A new age model for the Pliocene of the Southern North Sea Basin: evidence for asynchronous shifts of marine and terrestrial climate

2019 ◽  
Author(s):  
Emily Dearing Crampton-Flood ◽  
Lars J. Noorbergen ◽  
Damian Smits ◽  
R. Christine Boschman ◽  
Timme H. Donders ◽  
...  
Keyword(s):  
North Sea ◽  
North Atlantic ◽  
Coastal Zones ◽  
Late Pliocene ◽  
Southern North Sea ◽  
The North ◽  
Lipid Biomarker ◽  
Marine Realm ◽  
Age Model ◽  
The North Atlantic

Abstract. The mid-Pliocene Warm Period (mPWP, 3254–3025 ka) represents the most recent interval in Earth's history where atmospheric CO2 levels were similar to today. The reconstruction of sea surface temperatures (SSTs) and modeling studies have shown that global temperatures were 2–4 °C warmer than present. However, detailed reconstructions of marginal seas and/or coastal zones that enable linking climate evolution in the marine realm to that on the continents are lacking. This is in part due to the absence of precise age models for coastal zones, as they are generally dynamic systems with varying sediment and fresh water inputs. Here, we present a multi-proxy record of Pliocene climate change in the coastal Southern North Sea Basin (SNSB) based on the sedimentary record from borehole Hank, the Netherlands. The marginal marine setting of the Hank borehole during the late Pliocene provides an excellent opportunity to correlate marine and terrestrial signals, due to continental sediment input mainly from the proto-Rhine-Meuse river. We improve the existing low-resolution palynology-based age model for the Hank borehole using oxygen stable isotope measurements (δ18O) of the endobenthic foraminifera species Cassidulina laevigata, integrated with biochrono- and seismostratigraphy. Identification of hiatuses and freshwater effects in the record allows us to accurately isolate glacial-interglacial climate signals that can be linked to a reference global benthic δ18O stack. In tandem with the biostratigraphic age control this results in an age framework for the SNSB for the Late Pliocene (~ 3200–2800 ka). Our multi-proxy reconstruction for the mPWP shows a strong agreement between lipid biomarker and palynology-based terrestrial temperature proxies, which suggest a stable climate, 1–2 °C warmer than present. In the marine realm, however, biomarker-based SSTs show a large range of variation (10 °C). Nevertheless, the fluctuation is comparable to other SST records from the North Atlantic and Nordic Seas, suggesting that a common factor, most likely variations in the North Atlantic Current, exerted a strong influence over SSTs in the North Atlantic at this time.

Phenology of Migratory Bat Activity Across the Baltic Sea and the South-Eastern North Sea

2014 ◽  
Vol 16 (1) ◽  
pp. 139-147 ◽  
Author(s):  
Jens Rydell ◽  
Lothar Bach ◽  
Petra Bach ◽  
Laura Guia Diaz ◽  
Joanna Furmankiewicz ◽  
...  
Keyword(s):  
Baltic Sea ◽  
North Sea ◽  
The South ◽  
The Baltic Sea ◽  
Bat Activity ◽  
South Eastern ◽  
The Baltic

Comparative Analysis of Salt Structures in the Southern North Sea, Dutch Offshore, the Netherlands

Geotectonics ◽  
2020 ◽  
Vol 54 (6) ◽  
pp. 807-820
Author(s):  
M. A. F. Miraj ◽  
A. Ali ◽  
N. Ahsan ◽  
Sh. Afgan ◽  
R. F. Saleem
Keyword(s):  
Comparative Analysis ◽  
The Netherlands ◽  
North Sea ◽  
Southern North Sea

Integrated stratigraphy of foreland salt-marsh sediments of the south-eastern North Sea region

2020 ◽  
Vol 53 (4) ◽  
pp. 415-442
Author(s):  
Dorothea Bunzel ◽  
Yvonne Milker ◽  
Katharina Müller-Navarra ◽  
Helge Wolfgang Arz ◽  
Jana Friedrich ◽  
...  
Keyword(s):  
Salt Marsh ◽  
North Sea ◽  
The South ◽  
South Eastern ◽  
Marsh Sediments ◽  
Salt Marsh Sediments ◽  
Integrated Stratigraphy

The Carrack Field, Blocks 49/14b, 49/15a and 49/15b, UK North Sea

2020 ◽  
Vol 52 (1) ◽  
pp. 119-130 ◽  
Author(s):  
R. Rieu ◽  
R. J. Porter
Keyword(s):  
Production Rate ◽  
North Sea ◽  
The South ◽  
Production Time ◽  
Water Contact ◽  
Southern North Sea ◽  
The North ◽  
Current Production ◽  
Main Fault

AbstractThe Carrack Field, located in the Southern North Sea Blocks 49/14b and 49/15a, has of the order or 15 bcm (530 bcf) gas initially in place and is operated by Shell UK Ltd. The field consists of a pop-up structure in the south of the field and extends to the north with a gently-dipping monoclinal structure. The reservoir comprises sandstones of the Permian Silverpit and Leman Sandstone formations, which contain c. 85% of the in-place resources. The quality of the reservoir decreases rapidly to the north. Gas is also produced from Carboniferous sandstones of late Duckmantian (Westphalian B)–Bolsovian (Westphalian C) age.Initially, the field was in pressure communication both laterally and vertically with a single gas–water contact. During production time, however, the three main fault blocks behaved independently, and decimetre-thick shale intervals acted as vertical baffles between the sandstone units.The Carrack Field has been in production since 2003 and is developed by a single platform with seven mainly deviated wells. The current production rate is c. 0.7 MMm3/day (25 MMscfgd). Until the end of field life in the 2030s, the field is expected to produce gas of the order of a few bcm. The main remaining opportunity is the undeveloped Carrack West compartment.

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