A5046169888- Geology and Paleoclimatology Research
- Methane Hydrates and Related Phenomena
- Hydrocarbon exploration and reservoir analysis
- Geological Studies and Exploration
- Isotope Analysis in Ecology
- Geological formations and processes
- Paleontology and Stratigraphy of Fossils
- Marine and environmental studies
- Geological and Geophysical Studies
- Marine Biology and Ecology Research
- Geological and Geochemical Analysis
- Marine Ecology and Invasive Species
- Archaeology and ancient environmental studies
- earthquake and tectonic studies
- Geochemistry and Geologic Mapping
- Atmospheric and Environmental Gas Dynamics
- Pleistocene-Era Hominins and Archaeology
- Climate change and permafrost
- Coal and Its By-products
- Evolution and Paleontology Studies
- Marine Biology and Environmental Chemistry
- Wildlife Ecology and Conservation
- Geomagnetism and Paleomagnetism Studies
- Geological Modeling and Analysis
- Forensic Anthropology and Bioarchaeology Studies
Aarhus University
2012-2025
Centre for Arctic Gas Hydrate, Environment and Climate
2024
Geological Survey of Denmark and Greenland
1985-2018
Western University
2016
Thompson Rivers University
2016
Brunel University of London
2016
Research International (United States)
1980
University of Sheffield
1980
Smithsonian Institution
1977
Artistic Realization Technologies
1961
Abstract Two cores from the southwestern shelf and slope of Storfjorden, Svalbard, taken at 389 m 1485 water depth have been analyzed for benthic planktic foraminifera, oxygen isotopes, ice-rafted debris. The results show that over last 20,000 yr, Atlantic has continuously present on Svalbard shelf. However, 15,000 to 10,000 14 C yr BP, comprising Heinrich event H1 interval, Bølling–Allerød interstades Younger Dryas stade, it flowed as a subsurface mass below layer polar surface water. In...
A high‐resolution piston core, ENAM93‐21, from a water depth of 1020 m near the Faeroe‐Shetland Channel is investigated for variations in magnetic susceptibility, surface oxygen isotopes, grain size distribution, content ice‐rafted detritus (IRD), and distribution planktonic benthic foraminifera. The covering last 58,000 years, correlated with Greenland ice cores compared paleorecords Norwegian Sea North Atlantic Ocean. All fifteen Dansgaard‐Oeschger climatic cycles recognized time period...
The application of 87Sr/86Sr in prehistoric mobility studies requires accurate strontium reference maps. These are often based from present-day surface waters. However, the use agricultural lime low to noncalcareous soils can substantially change compositions Water unaffected by agriculture western Denmark has an average ratio 0.7124 as compared 0.7097 water nearby farmland. obtained samples over 1.5 km along a stream, which originates forest and flows through lime-treated farmland,...
Research Article| October 01, 1996 Circulation changes in the Faeroe-Shetland Channel correlating with cold events during last glacial period (58–10 ka) Tine L. Rasmussen; Rasmussen 1Institute of Geology, University Copenhagen, Øster Voldgade 10, DK-1350 Copenhagen K, Denmark Search for other works by this author on: GSW Google Scholar Erik Thomsen; Thomsen 2Department Earth Sciences, Aarhus, C. F. Møllers Allé, DK-8000 Aarhus C, Laurent Labeyrie; Labeyrie 3Centres des Faibles...
Birger Schmitz, Victoriano Pujalte, Eustoquio Molina, Simonetta Monechi, Xabier Orue-Etxebarria, Robert P. Speijer, Laia Alegret, Estibaliz Apellaniz, Ignacio Arenillas, Marie-Pierre Aubry, Juan-Ignacio Baceta, William A. Berggren, Gilen Bernaola, Fernando Caballero, Anne Clemmensen, Jaume Dinarès-Turell, Christian Dupuis, Claus Heilmann-Clausen, Asier Hilario Orús, Knox, Maite Martín-Rubio, Silvia Ortiz, Aitor Payros, Maria Rose Petrizzo, Katharina von Salis, Jorinde Sprong, Etienne...
Results from two deep sea cores northeast of Newfoundland at 1251 and 2527 m water depth, respectively, indicate that during the time period 160,000 to 10,000 years BP, ice rafting events in Labrador Sea were accompanied by rapid variations surface circulation. Twelve ice‐rafting occurred, each coinciding with high concentrations detrital carbonate oxygen isotopic depletion both bottom waters. Eleven these can be correlated North Atlantic Heinrich H1–H11. The remaining very conspicuous event...
Abstract The precise reason for the differences and out-of-phase relationship between abrupt Dansgaard-Oeschger warmings in Nordic seas Greenland ice cores gradual south-central Atlantic Antarctic is poorly understood. Termed bipolar seesaw, are apparently linked to perturbations ocean circulation pattern. Here we show that surface intermediate-depth water south of Iceland warmed gradually synchronously with warming out phase over Greenland. hinge line areas showing was close...
Abstract Planktic foraminifers are ubiquitous marine calcifiers sensitive to ocean biogeochemical and physical changes. Their fossil remains have thus been widely used for the reconstruction of past oceanographic climatic Here, we investigated distribution patterns planktic foraminiferal species, their abundance, shell size, preservation state in two sediment cores from northern southern Barents Sea during last three millennia compared them with a living assemblage water column. The study...
A number of short‐lasting warm periods (interstadials) interrupted the otherwise cold climate last glacial period. These events are supposedly linked to inflow Atlantic surface water Nordic seas. However, previous investigations planktonic foraminifera from seas have not been able resolve any significant difference between interstadials and intervening stadials, as faunas continuously dominated by polar species Neogloboquadrina pachyderma s. Here we examine assemblages a high‐resolution...
The Danian-Selandian boundary at Svejstrup is characterized by an abrupt facies change from a pure limestone to terrigeneous marl. top of the Danian limestone intensively burrowed abrasion surface. Sel:indian deposits are initiated conglomerate glauconitized and phosphatized pebbles. Although very similar nearby section Hvalklse, time interval included in hiatus greater than Hvall0se. coccoliths dinoflagellates indicate different ages for Danian. It also shown that sequences Harre Viborg...
ABSTRACT The lower Danian bryozoan mounds exposed in the cliff at Karlby are described. Analyses of some sixty samples taken from a single mound reveal that limestone is composed about 30% fragments fine grained matrix. texture and grain‐size distribution show two distinct sedimentary facies can be recognized: (1) northwestern flank basins with fragments, relatively small amount matrix, grain‐supported texture; (2) southeastern summit coarse bryozoans, larger matrix partly mud‐supported...
Brines can have a profound influence on the relative abundance of calcareous and agglutinated foraminiferal faunas. Here we investigated distribution benthic species in four cores from brine‐enriched environment S torfjorden, valbard. Stratigraphically, comprise last 15 000 years. The purpose study was to reconstruct changes palaeoecology palaeoceanography torfjorden relation past climate changes, identify potential indicator for brine‐affected environments. foraminifera all widespread...