Age of the youngest Palaeogene flood basalts in East Greenland
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Age of the youngest Palaeogene flood basalts in East Greenland. / Heilmann-Clausen, C.; Piasecki, Stefan; Abrahamsen, Niels; Larsen, M.; Stemmerik, Lars.
I: Newsletters on Stratigraphy, Bind 43, Nr. 1, 2008, s. 55-63.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Age of the youngest Palaeogene flood basalts in East Greenland
AU - Heilmann-Clausen, C.
AU - Piasecki, Stefan
AU - Abrahamsen, Niels
AU - Larsen, M.
AU - Stemmerik, Lars
PY - 2008
Y1 - 2008
N2 - 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.
AB - 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.
KW - Faculty of Science
KW - Øst Grønland
KW - Basalt
KW - geologi
KW - paleogene flood basalts
KW - East Greenland
KW - Basalt
KW - geology
U2 - 10.1127/0078-0421/2008/0043-0055
DO - 10.1127/0078-0421/2008/0043-0055
M3 - Journal article
VL - 43
SP - 55
EP - 63
JO - Newsletters on Stratigraphy
JF - Newsletters on Stratigraphy
SN - 0078-0421
IS - 1
ER -
ID: 8297328