A new scenario for the mass transport deposits west Canary volcanic province
作者： Ricardo León , Desirée Palomino , Juan-Tomás Vázquez , Teresa Medialdea , Luis Somoza
DOI: 10.1016/J.EPSL.2018.12.020
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摘要: Abstract A new temporal history of mass wasting processes for the west Canary volcanic province is presented. Its onset has been estimated in middle–upper Miocene (∼13.5 ± 1.2 Ma), matching with a critical period construction this province. Seismic profiles show an emplacement longevity (from to Quaternary) multiple events, defined by stacked lobes debrites, linked flank collapses and avalanches edifices (islands seamounts). An evolution pathways source areas detected from east (Miocene) (Quaternary); as well migration activity northwest (west Islands: e.g. El Hierro La Palma). Six connected branches (I–VI), three them described first time here, Quaternary seismic units transport deposits (MTDs) have characterized. The Pleistocene makes up huge buried MTDs system, until now unknown, pointing sedimentological scenario. Finally, two southernmost (V–VI), are mainly system terraced debrites sourced seamounts Island Seamount Province, apparently inactive upper Cretaceous.
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