• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Greenland; Mid-Atlantic Ridge; Iceland; North Atlantic
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.591.1646; http://www-odp.tamu.edu/publications/152_SR/VOLUME/CHAP_27.PDF

seaward-dipping reflector sequence (SDRS) at the southeast Green-land Margin (except the youngest igneous unit cored, which is a post-SDRS sill). The breakup of the northern Laurasian continent in the early Ter-tiary was accompanied by eruption of huge amounts of volcanic ma-terial onto the continent near the zones of breakup. After breakup, the volcanic activity continued in the form of seafloor spreading in the new North Atlantic ocean basin, a process that has continued to this day on Iceland and along the Mid-Atlantic Ridge. The early Tertiary volcanic rocks are known in a number of areas along the margins of the North Atlantic Ocean (Fig. 1). The compositional variability of the volcanic rocks reflects the variability in the processes responsible for their formation, from generation in the mantle to deposition on the surface. In this paper we examine the compositional variations in the volcanic rocks of the southeast Greenland Margin in comparison to