www.elsevier.comrlocatergloplacha Neogene uplift and tectonics around the North Atlantic: overview
There appear to have been at least two significant episodes of uplift around the North Atlantic during the Cenozoic, and in many places it is not easy to separate the two. Effects related to emplacement of the Iceland plume probably caused one episode, mostly in the Palaeogene. The second episode to...
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| Format: | Text |
| Language: | English |
| Published: |
1999
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.520.7508 http://japsen.geus.info/xpdf/2000-japsen-%26-chalmers-gpc.pdf |
| Summary: | There appear to have been at least two significant episodes of uplift around the North Atlantic during the Cenozoic, and in many places it is not easy to separate the two. Effects related to emplacement of the Iceland plume probably caused one episode, mostly in the Palaeogene. The second episode took place in the late Cenozoic, and comprised uplift of basin margins as well as accelerated subsidence of basin centres adjacent to the uplifted landmasses. Cenozoic uplift of Scandinavia and of the British Isles has been suggested since at least the beginning of the 20th century. However, it is only recently being recognised in the literature that a major Neogene tectonic event has affected nearly every continental margin .in the area including western and eastern Greenland and far into the European craton. Pre-Cenozoic rocks are generally exposed onshore and the pre-Quaternary sediments offshore are generally of Neogene age. Between the two, inclined Palaeogene and older beds are truncated by erosional unconformities along many coastlines. This structural configuration is in accordance with a Neogene uplift of the continents. A variety of methods have been used to investigate uplift, erosion and redeposition: studies of maximum burial, fission tracks, geomorphology, sediment supply and structural relations. These methods each investigates only one aspect of the phenomenon, and a thorough understanding of the processes of uplift and erosion can only be achieved if results from these methods are integrated. |
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