Prodigious submarine landslides during the inception and early growth of volcanic islands.

摘要: Volcanic island inception applies large stresses as the ocean crust domes in response to magma ascension and is loaded by eruption of lavas. There currently limited information on when volcanic islands are initiated seafloor, no regarding seafloor instabilities may cause. The deep sea Madeira Abyssal Plain contains a 43 million year history turbidites among which many originate from mass movements Canary Islands. Here, we investigate composition timing distinctive group that suggest represent new unique record large-volume submarine landslides triggered during inception, shield growth, final subaerial emergence These slides predominantly multi-stage yet largest Earth’s surface up three or more-times larger than Islands flank collapses. Thus whilst these deposits provide invaluable geodynamics they also significant, unaccounted, marine geohazard. As grow via shield-building edifice occur. authors reconstruct created grew, showing multi-stage.