Upper Campanian-Maastrichtian chronostratigraphy of the Skaelskor-1 Core, Denmark; correlation at the basinal and global scale and implications for changes in sea-surface temperatures

Online Access: Get full text
doi: 10.1111/let.12128
Author(s): Thibault, Nicolas; Anderskouv, Kresten; Bjerager, Morten; Boldreel, Lars O.; Jelby, Mads E.; Stemmerik, Lars; Surlyk, Finn
Author Affiliation(s): Primary:
University of Copenhagen, Department of Geosciences and Natural Resource Management, Copenhagen, Denmark
Other:
Geological Survey of Denmark and Greenland, Denmark
Natural History Museum of Denmark, Denmark
Volume Title: Lethaia
Source: Lethaia, 48(4), p.549-560. Publisher: Wiley for the Lethaia Foundation, Oslo, Norway. ISSN: 0024-1164 CODEN: LETHAT
Note: In English. 41 refs.; illus., incl. strat. col., 2 tables, geol. sketch map
Summary: The lithostratigraphy, calcareous nannofossil biostratigraphy, carbon- and oxygen-isotope stratigraphy and gamma-ray profile are presented for the Skaelskor-1 core, eastern Denmark. The correlation of carbon isotopes to Gubbio (Italy) and ODP Site 762C (Indian Ocean) provides the chronostratigrahical framework of the core through a tie to magnetostratigraphy. Two new carbon-isotope excursions are defined for the uppermost Maastrichtian of the core and prove useful for long-distance correlation. Twenty stratigraphic tie-points are used for correlation of the upper Campanian-Maastrichtian interval by combining carbon-isotope and gamma-ray variations. Significant dissimilarities in the gamma-ray profiles of the Danish Basin cores preclude the sole use of this tool for basin-scale correlations. Bulk oxygen-isotopes and semi-quantitative abundance changes in the warm-water calcareous nannofossil Watznaueria barnesiae and the cool-water Kamptnerius magnificus highlight the following past changes in sea-surface temperatures (SSTs): relatively warm late Campanian SSTs, cooling across the Campanian-Maastrichtian boundary and through the early Maastrichtian, warming across the early-late Maastrichtian transition, cooling in the late Maastrichtian, intense warming in the latest Maastrichtian chron C29r, followed by a very short episode of cooling immediately before the Cretaceous-Palaeogene boundary. The late Campanian-Maastrichtian evolution in sea water temperatures inferred from the Danish Basin is similar to that delineated at tropical latitude oceanic sites. Abstract Copyright (2015), John Wiley & Sons, Ltd.
Year of Publication: 2015
Research Program: ODP Ocean Drilling Program
Key Words: 02 Geochemistry; 12 Stratigraphy, Historical Geology and Paleoecology; Algae; Assemblages; Biostratigraphy; C-13/C-12; Campanian; Carbon; Chemostratigraphy; Correlation; Cretaceous; Danish Basin; Denmark; Europe; Exmouth Plateau; Floral list; Gamma-ray methods; Gubbio Italy; Indian Ocean; Isotope ratios; Isotopes; Italy; Leg 122; Lithostratigraphy; Maestrichtian; Mesozoic; Microfossils; Nannofossils; O-18/O-16; ODP Site 762; Ocean Drilling Program; Oxygen; Paleoclimatology; Paleotemperature; Perugia Italy; Plantae; Scandinavia; Sea-surface temperature; Sjaelland; Skaelskor Denmark; Skelskor-1 Core; Southern Europe; Stable isotopes; Umbria Italy; Upper Campanian; Upper Cretaceous; Well logs; Western Europe
Coordinates: N551700 N551700 E0111700 E0111700
S195315 S195314 E1121515 E1121514
N431500 N432500 E0134200 E0133500
Record ID: 2016037505
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom