A stratigraphical and palaeoenvironmental analysis of the sub-basaltic Palaeogene sediments of East Greenland

摘要

Palaeogene sedimentary strata from beneath the bsalitc lavas of East Greenland have yielded a suite of palynofloras whichdetermine the age and environment of depositon of these rock units.These palynoflorasinclude APectodinium augustum,Deflandrea oebisfeldensis and a pollen assemblage containing common Caryapollenites veripites with Camerozonosporotes heskemensis and Stereisporites in assemblages characteristic of the latest Paleocene to earliest Eocene Sequence T40.This allows a correlationof be established,complementing an already established framework based on laval geochemistry,which shows that lava eruptonin East Greenland was initiate dsomewhat later than in theFaroe islands.it also highlights the presence of a widespread major unconformity in the East Greenland succession,spanning the late Maastrichtian to the end of the Paleocene.Thelack of sedimentation throughout the Early Paleocene,and majority of the Late Paleocene,highlights the possibility of Paleocene sedimentary systems bypassing the East Greenland shelf,with clastic deposition forced eastwards towards the area of the Faroe Islands and the More and Voring basins.