TY - JOUR AU - Garcia, S. AU - Angelier, J. AU - Bergerat, F. AU - Homberg, C. AU - Dauteuil, O. PY - 2008// TI - Influence of rift jump and excess loading on the structural evolution of northern Iceland JO - Tectonics VL - 27 PB - American Geophysical Union KW - rift jump KW - structural evolution KW - lava dip KW - dyke KW - fault KW - flexure zone KW - Iceland KW - 8010 Structural Geology: Fractures and faults KW - 8036 Structural Geology: Paleoseismology KW - 8178 Tectonophysics: Tectonics and magmatism KW - 8137 Tectonophysics: Hotspots KW - large igneous provinces KW - and flood basalt volcanism KW - 9325 Geographic Location: Atlantic Ocean N2 - New structural data combined with published structural and geochronological data allow reconstruction of the structural evolution that followed the last rift jump across northern Iceland. Tertiary lava flows erupted along the Skagafjördur paleo-rift have been down-bent under the weight of, and in the direction of, Plio-Pleistocene lava flows emitted from the Northern Volcanic Zone and the central part of Iceland. This down-bending process involved development of local flexure zones and a flexural extension along the resulting monoclines. This structural reorganization explains the existence of the Húnaflói-Skagi synform without need for a paleo-rift axis along it, in agreement with previous radiometric dating. The large amount of Plio-Pleistocene lava flows erupted in Central Iceland may have been enhanced by ice cap loading. SN - 0278-7407 UR - http://dx.doi.org/10.1029/2006TC002029 N1 - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=5497), last updated on Wed, 15 Apr 2009 18:31:16 +0200 ID - Garcia_etal2008 ER -