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Palaeogene Continental to Oceanic Magmatism on the SE Greenland Continental Margin at 63{degrees}N: a Review of the Results of Ocean Drilling Program Legs 152 and 163 |
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| Authors: | FITTON J G; LARSEN L M; SAUNDERS A D; HARDARSON B S; KEMPTON P D |
| Institution: | 1DEPARTMENT OF GEOLOGY AND GEOPHYSICS, UNIVERSITY OF EDINBURGH, WEST MAINS ROAD, EDINBURGH EH9 3JW, UK 2GEOLOGICAL SURVEY OF DENMARK AND GREENLAND, THORAVEJ 8, DK-2400 COPENHAGEN NV, DENMARK 3DEPARTMENT OF GEOLOGY, UNIVERSITY OF LEICESTER, LEICESTER LE1 7RH, UK 4SCOTTISH UNIVERSITIES ENVIRONMENTAL RESEARCH CENTRE, EAST KILBRIDE G75 0QF, UK 5NERC ISOTOPE GEOSCIENCES LABORATORY, KEYWORTH, NOTTINGHAM NG12 5GG, UK |
| Abstract: | Drilling along a 63°N transect off SE Greenland during OceanDrilling Program (ODP) Legs 152 and 163 recovered a successionof volcanic rocks representing all stages in the break-up ofthe volcanic rifted margin. The rocks range from pre-break-upcontinental tholeiitic flood basalt, through syn-break-up picrite,to truly oceanic basalt forming the main part of the seaward-dippingreflector sequence (SDRS). All the lava flows recovered fromthe transect were erupted in a subaerial environment. 40Ar–39Ardating shows that the earliest magmas were erupted at |
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