Presence of large pumice blocks on Tierra del Fuego and South Shetland islands shorelines, from 1962 South Sandwich Islands eruption

• Main Authors: Risso, Corina María Ana, Scasso, Roberto Adrian
• Language: unknown
• Published: 2002
• Subjects: Antarctic Circumpolar Current; Oceanic currents; Protector Shoal; Pumice; Submarine volcanic eruption; Submarine eruption; Abrasives; Beaches; Submarine geology; oceanic current; petrology; submarine volcano; transport process; Antarctica; Argentina; Antarctic; Drake Passage; Protector; Sandwich Islands; South Sandwich Islands; South Shetland Islands; Antarc*; Tierra del Fuego
• Online Access: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00253227_v186_n3-4_p413_Risso; https://hdl.handle.net/20.500.12110/paper_00253227_v186_n3-4_p413_Risso

We report on the source of pumice found on beaches of Tierra del Fuego (Argentina) and the South Shetland Islands (Antarctica), north and south of the Drake Passage. Petrological studies, chemical analyses and experiments on this pumice indicate it is most likely from a 1962 submarine eruption in the South Sandwich Islands. Previous work stated that clockwise marine currents carried such pumice as far as Tasmania. Our findings show that the currents continued to transport the pumice to Drake Passage, nearly completing a circuit around Antarctica, and up to southern Argentina showing that this material can follow complex pathways for more than 20 000 km. © 2002 Elsevier Science B.V. All rights reserved. Fil:Risso, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Scasso, R.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.