A stratigraphic interpretation of the Oxfordian-Valaginian deposits in the Danish Subbasin

Ulrik Gregersen; Olaf Michelsen

doi:10.34194/seriec.v12.7114

A stratigraphic interpretation of the Oxfordian-Valaginian deposits in the Danish Subbasin

Publikation: Bidrag til bog/rapport/konferenceproceedings › Konferenceartikel i proceedings › peer review

Resumé

Six sequences are identified in the Upper Jurassic and lowermost Cretaceous Flyvbjerg-, Børglum- and Frederikshavn Formations of the Danish Subbasin. Sequence boundaries and maximum flooding surfaces are interpreted on the basis of log analysis, biostratigraphy and lithology of core samples. Parasequences and parasequence sets are mainly recognized in shallow marine sediments. The gamma ray and SP logs of the sequences have an overall cyclic character, indicating the presence of upward fining deposits overlain by upward coarsening deposits. A blocky log pattern or an upward decreasing trend lowermost in the sequence represents sanddominated sediments, and it is interpreted as lowstand deposits caused by forced regression. The overlying interval with upward fining deposits comprise transgressive deposits. The interval between maximum flooding surface and the upper sequence boundary has an upward coarsening trend, and it probably includes the highstand deposits.

Originalsprog	Engelsk
Titel	Proceedings of the 2nd Symposium on Marine Geology
Undertitel	Geology of the North Sea and Skagerrak, Aarhus University, 1993
Redaktører	Olaf Michelsen
Forlag	Danmarks Geologiske Undersøgelse
Sider	125-136
Antal sider	11
DOI	https://doi.org/10.34194/seriec.v12.7114
Status	Udgivet - 1995
Udgivet eksternt	Ja
Begivenhed	2nd Symposium on Marine Geology: Geology of the North Sea and Skagerrak - Aarhus Universitet, Aarhus, Danmark Varighed: 7 okt. 1993 → 8 okt. 1993 Konferencens nummer: 2

Publikationsserier

Navn	Danmarks Geologiske Undersøgelse, Serie C
Vol/bind	12

Andet

Andet	2nd Symposium on Marine Geology
Land/Område	Danmark
By	Aarhus
Periode	7/10/93 → 8/10/93

Programområde

Programområde 3: Energiressourcer

FN’s Verdensmål

Dette resultat bidrager til følgende verdensmål

Adgang til dokumentet

10.34194/seriec.v12.7114Licens: CC BY

Citationsformater

Gregersen, Ulrik ; Michelsen, Olaf. / A stratigraphic interpretation of the Oxfordian-Valaginian deposits in the Danish Subbasin. Proceedings of the 2nd Symposium on Marine Geology: Geology of the North Sea and Skagerrak, Aarhus University, 1993. red. / Olaf Michelsen. Danmarks Geologiske Undersøgelse, 1995. s. 125-136 (Danmarks Geologiske Undersøgelse, Serie C, Bind 12).

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title = "A stratigraphic interpretation of the Oxfordian-Valaginian deposits in the Danish Subbasin",

abstract = "Six sequences are identified in the Upper Jurassic and lowermost Cretaceous Flyvbjerg-, B{\o}rglum- and Frederikshavn Formations of the Danish Subbasin. Sequence boundaries and maximum flooding surfaces are interpreted on the basis of log analysis, biostratigraphy and lithology of core samples. Parasequences and parasequence sets are mainly recognized in shallow marine sediments. The gamma ray and SP logs of the sequences have an overall cyclic character, indicating the presence of upward fining deposits overlain by upward coarsening deposits. A blocky log pattern or an upward decreasing trend lowermost in the sequence represents sanddominated sediments, and it is interpreted as lowstand deposits caused by forced regression. The overlying interval with upward fining deposits comprise transgressive deposits. The interval between maximum flooding surface and the upper sequence boundary has an upward coarsening trend, and it probably includes the highstand deposits.",

author = "Ulrik Gregersen and Olaf Michelsen",

note = "Gregersen, U., & Michelsen, O. (1995). A stratigraphic interpretation of the Oxfordian-Valaginian deposits in the Danish Subbasin. Danmarks Geologiske Unders{\o}gelse Serie C, 12, 125–136. https://doi.org/10.34194/seriec.v12.7114; 2nd Symposium on Marine Geology : Geology of the North Sea and Skagerrak ; Conference date: 07-10-1993 Through 08-10-1993",

year = "1995",

doi = "10.34194/seriec.v12.7114",

language = "English",

series = "Danmarks Geologiske Unders{\o}gelse, Serie C",

publisher = "Danmarks Geologiske Unders{\o}gelse",

pages = "125--136",

editor = "Olaf Michelsen",

booktitle = "Proceedings of the 2nd Symposium on Marine Geology",

}

Gregersen, U & Michelsen, O 1995, A stratigraphic interpretation of the Oxfordian-Valaginian deposits in the Danish Subbasin. i O Michelsen (red.), Proceedings of the 2nd Symposium on Marine Geology: Geology of the North Sea and Skagerrak, Aarhus University, 1993. Danmarks Geologiske Undersøgelse, Danmarks Geologiske Undersøgelse, Serie C, bind 12, s. 125-136, 2nd Symposium on Marine Geology, Aarhus, Danmark, 7/10/93. https://doi.org/10.34194/seriec.v12.7114

A stratigraphic interpretation of the Oxfordian-Valaginian deposits in the Danish Subbasin. / Gregersen, Ulrik; Michelsen, Olaf.
Proceedings of the 2nd Symposium on Marine Geology: Geology of the North Sea and Skagerrak, Aarhus University, 1993. red. / Olaf Michelsen. Danmarks Geologiske Undersøgelse, 1995. s. 125-136 (Danmarks Geologiske Undersøgelse, Serie C, Bind 12).

Publikation: Bidrag til bog/rapport/konferenceproceedings › Konferenceartikel i proceedings › peer review

TY - GEN

T1 - A stratigraphic interpretation of the Oxfordian-Valaginian deposits in the Danish Subbasin

AU - Gregersen, Ulrik

AU - Michelsen, Olaf

N1 - Conference code: 2

PY - 1995

Y1 - 1995

N2 - Six sequences are identified in the Upper Jurassic and lowermost Cretaceous Flyvbjerg-, Børglum- and Frederikshavn Formations of the Danish Subbasin. Sequence boundaries and maximum flooding surfaces are interpreted on the basis of log analysis, biostratigraphy and lithology of core samples. Parasequences and parasequence sets are mainly recognized in shallow marine sediments. The gamma ray and SP logs of the sequences have an overall cyclic character, indicating the presence of upward fining deposits overlain by upward coarsening deposits. A blocky log pattern or an upward decreasing trend lowermost in the sequence represents sanddominated sediments, and it is interpreted as lowstand deposits caused by forced regression. The overlying interval with upward fining deposits comprise transgressive deposits. The interval between maximum flooding surface and the upper sequence boundary has an upward coarsening trend, and it probably includes the highstand deposits.

AB - Six sequences are identified in the Upper Jurassic and lowermost Cretaceous Flyvbjerg-, Børglum- and Frederikshavn Formations of the Danish Subbasin. Sequence boundaries and maximum flooding surfaces are interpreted on the basis of log analysis, biostratigraphy and lithology of core samples. Parasequences and parasequence sets are mainly recognized in shallow marine sediments. The gamma ray and SP logs of the sequences have an overall cyclic character, indicating the presence of upward fining deposits overlain by upward coarsening deposits. A blocky log pattern or an upward decreasing trend lowermost in the sequence represents sanddominated sediments, and it is interpreted as lowstand deposits caused by forced regression. The overlying interval with upward fining deposits comprise transgressive deposits. The interval between maximum flooding surface and the upper sequence boundary has an upward coarsening trend, and it probably includes the highstand deposits.

U2 - 10.34194/seriec.v12.7114

DO - 10.34194/seriec.v12.7114

M3 - Conference article in proceedings

T3 - Danmarks Geologiske Undersøgelse, Serie C

SP - 125

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BT - Proceedings of the 2nd Symposium on Marine Geology

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Gregersen U, Michelsen O. A stratigraphic interpretation of the Oxfordian-Valaginian deposits in the Danish Subbasin. I Michelsen O, red., Proceedings of the 2nd Symposium on Marine Geology: Geology of the North Sea and Skagerrak, Aarhus University, 1993. Danmarks Geologiske Undersøgelse. 1995. s. 125-136. (Danmarks Geologiske Undersøgelse, Serie C, Bind 12). doi: 10.34194/seriec.v12.7114

A stratigraphic interpretation of the Oxfordian-Valaginian deposits in the Danish Subbasin

Resumé

Publikationsserier

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Programområde

FN’s Verdensmål

Adgang til dokumentet

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Citationsformater