A model for the early evolution of the Irish continental margin |
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| Authors: | RJ BaileyJS Buckley |
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| Institution: | U.C.N.W., Marine Science Laboratories, Menai Bridge, North Wales ,U.K.; BP Petroleum Development Ltd., Great Yarmouth ,U.K. |
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| Abstract: | It has been suggested that Porcupine Ridge, west of Ireland, represents a continental fragment displaced westwards relative to Europe at an early stage in the opening of the North Atlantic. This hypothesis presents difficulties, particularly in relation to the magnetic evidence for the onset of seafloor spreading at these latitudes. However, the structure of the Irish continental margin, so far as it is known, appears consistent with a westward rotation of Porcupine Ridge by some 23°; and there are still grounds for supposing that the adjacent Rockall Trough may represent a locus of Mesozoic seafloor spreading with which the rotation could have been associated. |
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