Robuta

https://www.usgs.gov/publications/fragmentary-evidence-great-earthquake-subsidence-during-holocene-emergence-valdivia Fragmentary evidence of great-earthquake subsidence during holocene emergence, Valdivia estuary,... A reconnaissance of Holocene stratigraphy beneath fringing marshes of the Valdivia estuary, where an M 9.5 earthquake caused 1-2 m of regional coseismic... fragmentary evidenceof greatearthquake