Age of the youngest Palaeogene flood basalts in East Greenland

Intra-basaltic sediments 50 m below the top of the Paleogene lava succession at Kap Dalton, East Greenland, contain dinoflagellate cysts of late Ypresian-earliest Lutetian age, while sediments immediately above the lavas contain an assemblage of early Lutetian age. Combined with paleomagnetic result...

Full description

Bibliographic Details
Published in:Newsletters on Stratigraphy
Main Authors: Heilmann-Clausen, C., Piasecki, Stefan, Abrahamsen, Niels, Larsen, M., Stemmerik, Lars
Format: Article in Journal/Newspaper
Language:English
Published: 2008
Subjects:
/dk/atira/pure/core/keywords/TheFacultyOfScience
Faculty of Science
Øst Grønland
Basalt
geologi
paleogene flood basalts
East Greenland
geology
Greenland
Kap
Kap Dalton
Grønland
Online Access:https://curis.ku.dk/portal/da/publications/age-of-the-youngest-palaeogene-flood-basalts-in-east-greenland(0ad00570-a65c-11dd-b5e9-000ea68e967b).html
https://doi.org/10.1127/0078-0421/2008/0043-0055
Description
Summary:Intra-basaltic sediments 50 m below the top of the Paleogene lava succession at Kap Dalton, East Greenland, contain dinoflagellate cysts of late Ypresian-earliest Lutetian age, while sediments immediately above the lavas contain an assemblage of early Lutetian age. Combined with paleomagnetic results, this constrains the termination of the East Greenland Paleogene Igneous Province to the Early-Middle Eocene transition (nannoplankton chronozones NP13-NP14/earliest NP15). This is 6-8 Ma younger than according to previous biostratigraphic age assignments. The new data show that flood basalt volcanism occurred simultaneously with major intrusions occurring further to the south. This corroborates previous assumptions of an important melting event much younger than the continental break-up.

Similar Items