TY - JOUR
T1 - Bio- and magnetostratigraphy of Rupelian-mid Chattian deposits from the Danish land area
AU - Śliwińska, Katarzyna K.
AU - Abrahamsen, Niels
AU - Beyer, Claus
AU - Brünings-Hansen, Thomas
AU - Thomsen, Erik
AU - Ulleberg, Kaare
AU - Heilmann-Clausen, Claus
N1 - Funding Information:
Kirsten Rosendal (Dept. of Geoscience, AU) prepared palynological and calcareous nannofossil slides. Daniel C. Heubeck (DG, AU) washed foraminifera samples. Ole Bjørslev Nielsen (DG, AU) provided information about the lithology of the Horn-1 borehole. CHC and KKŚ acknowledge grant no. 272-08-0256 from Det Frie Forskningsrad — Natur og Univers (FNU) . KKŚ acknowledges financial support for her PhD project from Aarhus University and Fur Museum (Denmark) . Ian C Harding (University of Southampton), Henrik Nøhr Hansen (GEUS), the editor Mike Stephenson and two anonymous reviewers are sincerely acknowledged for their corrections and critical comments which have significantly improved the manuscript.
PY - 2012/2/15
Y1 - 2012/2/15
N2 - The age of the lithostratigraphic units in the Oligocene succession of Denmark is not well known. In order to remedy this situation, an integrated bio-magnetostratigraphical study of the Rupelian-mid Chattian deposits was carried out on six key sections situated in central Jutland. The studied sections include all previously known lithostratigraphical units (i.e., the Grundfør and Viborg Clay Members of the Viborg Formation, Linde Clay, Hvorslev Clay, Branden Clay) and a new, informal Unit X.The biostratigraphical part of the paper critically discusses the differences in ranges of some dinoflagellate cysts in relation to the two most commonly applied dinocyst zonations, the D- and NSO-zonation. The local calcareous nannofossil zonation of the upper NP23-lower NP25 interval in the studied sections is correlated to the standard NP zonation via the Contessa Barbetti Road section in central Italy. The correlation shows that an interval of the range of the dinoflagellate cyst Svalbardella recognized within the lower Chattian Asterigerina guerichi guerichi Zone in Denmark and Belgium is coeval with the global Oi2b cooling event.The identified magnetic polarity intervals have been correlated with the global polarity time scale on the basis of the biostratigraphy. The Viborg Formation is thus referred to Chron C13n and the lowermost part of C12r; the Linde Clay is referred to lower Chron C12r; and the Hvorslev Clay is referred to Chron C11n, C10 and C9r, or only the C11n.1n-C10r interval. The Branden Clay is referred to Chron C9r, C9n and C8r. Unit X is referred to Chron C8n.
AB - The age of the lithostratigraphic units in the Oligocene succession of Denmark is not well known. In order to remedy this situation, an integrated bio-magnetostratigraphical study of the Rupelian-mid Chattian deposits was carried out on six key sections situated in central Jutland. The studied sections include all previously known lithostratigraphical units (i.e., the Grundfør and Viborg Clay Members of the Viborg Formation, Linde Clay, Hvorslev Clay, Branden Clay) and a new, informal Unit X.The biostratigraphical part of the paper critically discusses the differences in ranges of some dinoflagellate cysts in relation to the two most commonly applied dinocyst zonations, the D- and NSO-zonation. The local calcareous nannofossil zonation of the upper NP23-lower NP25 interval in the studied sections is correlated to the standard NP zonation via the Contessa Barbetti Road section in central Italy. The correlation shows that an interval of the range of the dinoflagellate cyst Svalbardella recognized within the lower Chattian Asterigerina guerichi guerichi Zone in Denmark and Belgium is coeval with the global Oi2b cooling event.The identified magnetic polarity intervals have been correlated with the global polarity time scale on the basis of the biostratigraphy. The Viborg Formation is thus referred to Chron C13n and the lowermost part of C12r; the Linde Clay is referred to lower Chron C12r; and the Hvorslev Clay is referred to Chron C11n, C10 and C9r, or only the C11n.1n-C10r interval. The Branden Clay is referred to Chron C9r, C9n and C8r. Unit X is referred to Chron C8n.
KW - Benthic foraminifera
KW - Calcareous nannofossils
KW - Chattian
KW - Dinoflagellate cysts
KW - Magnetostratigraphy
KW - Rupelian
UR - http://www.scopus.com/inward/record.url?scp=84857468292&partnerID=8YFLogxK
U2 - 10.1016/j.revpalbo.2012.01.008
DO - 10.1016/j.revpalbo.2012.01.008
M3 - Article
AN - SCOPUS:84857468292
SN - 0034-6667
VL - 172
SP - 48
EP - 69
JO - Review of Palaeobotany and Palynology
JF - Review of Palaeobotany and Palynology
ER -