Costa Recta beach, Deception Island, West Antarctica: A retreated scarp of a submarine fault?

Deception Island (South Shetlands, Antarctica) is one of the most active volcanoes in Antarctica, having erupted recently in 1967, 1969 and 1970, damaging scientific stations on the island. It is also seismically very active. The island has attracted the attention of many researchers as it constitut...

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Detalles Bibliográficos
Autor principal: Caselli, Alberto T.
Publicado: 2005
Materias:
Active tectonics
Fault escarpment
Straight coast
Tectonic geomorphology
Uplifted terraces
coastal landform
fault scarp
submarine feature
Antarctica
Arctic and Antarctic
Deception Island
South Shetland Islands
World
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09541020_v17_n3_p418_FernandezIbanez
http://hdl.handle.net/20.500.12110/paper_09541020_v17_n3_p418_FernandezIbanez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_09541020_v17_n3_p418_FernandezIbanez
record_format dspace
spelling paper:paper_09541020_v17_n3_p418_FernandezIbanez2023-06-08T15:55:44Z Costa Recta beach, Deception Island, West Antarctica: A retreated scarp of a submarine fault? Caselli, Alberto T. Active tectonics Fault escarpment Straight coast Tectonic geomorphology Uplifted terraces coastal landform fault scarp submarine feature Antarctica Arctic and Antarctic Deception Island South Shetland Islands World Deception Island (South Shetlands, Antarctica) is one of the most active volcanoes in Antarctica, having erupted recently in 1967, 1969 and 1970, damaging scientific stations on the island. It is also seismically very active. The island has attracted the attention of many researchers as it constitutes an undisturbed natural laboratory to study seismo-volcanic events and how they affect landscape modelling and evolution. One of the most remarkable geological and geomorphological features on Deception Island is the linearity of its easternmost coastal landform, the origin of which remains unknown. Some answers, based on presence of strike-slip fault or on the ice cap and beach geomorphological dynamics, have been reported in the literature. Our new work provides several indications of the existence of a dip-slip submarine fault, parallel to the coast (NNW-SSE), which suggests a tectonic origin for this morphological feature. Uplifted marine terraces, incision of a fluvial network over the ice cap, normal faulting parallel to the coast in the north and south rock heads bounding the beach and sharp shelf-break with rather constant slope, constitute some of this evidence. Terrace uplift and fluvial channel incision decreasing southward from Macaroni Point, indicates possible tilt movement across this inferred fault plane. © Antarctic Science Ltd. Fil:Caselli, A.T. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2005 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09541020_v17_n3_p418_FernandezIbanez http://hdl.handle.net/20.500.12110/paper_09541020_v17_n3_p418_FernandezIbanez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Active tectonics
Fault escarpment
Straight coast
Tectonic geomorphology
Uplifted terraces
coastal landform
fault scarp
submarine feature
Antarctica
Arctic and Antarctic
Deception Island
South Shetland Islands
World
spellingShingle Active tectonics
Fault escarpment
Straight coast
Tectonic geomorphology
Uplifted terraces
coastal landform
fault scarp
submarine feature
Antarctica
Arctic and Antarctic
Deception Island
South Shetland Islands
World
Caselli, Alberto T.
Costa Recta beach, Deception Island, West Antarctica: A retreated scarp of a submarine fault?
topic_facet Active tectonics
Fault escarpment
Straight coast
Tectonic geomorphology
Uplifted terraces
coastal landform
fault scarp
submarine feature
Antarctica
Arctic and Antarctic
Deception Island
South Shetland Islands
World
description Deception Island (South Shetlands, Antarctica) is one of the most active volcanoes in Antarctica, having erupted recently in 1967, 1969 and 1970, damaging scientific stations on the island. It is also seismically very active. The island has attracted the attention of many researchers as it constitutes an undisturbed natural laboratory to study seismo-volcanic events and how they affect landscape modelling and evolution. One of the most remarkable geological and geomorphological features on Deception Island is the linearity of its easternmost coastal landform, the origin of which remains unknown. Some answers, based on presence of strike-slip fault or on the ice cap and beach geomorphological dynamics, have been reported in the literature. Our new work provides several indications of the existence of a dip-slip submarine fault, parallel to the coast (NNW-SSE), which suggests a tectonic origin for this morphological feature. Uplifted marine terraces, incision of a fluvial network over the ice cap, normal faulting parallel to the coast in the north and south rock heads bounding the beach and sharp shelf-break with rather constant slope, constitute some of this evidence. Terrace uplift and fluvial channel incision decreasing southward from Macaroni Point, indicates possible tilt movement across this inferred fault plane. © Antarctic Science Ltd.
author Caselli, Alberto T.
author_facet Caselli, Alberto T.
author_sort Caselli, Alberto T.
title Costa Recta beach, Deception Island, West Antarctica: A retreated scarp of a submarine fault?
title_short Costa Recta beach, Deception Island, West Antarctica: A retreated scarp of a submarine fault?
title_full Costa Recta beach, Deception Island, West Antarctica: A retreated scarp of a submarine fault?
title_fullStr Costa Recta beach, Deception Island, West Antarctica: A retreated scarp of a submarine fault?
title_full_unstemmed Costa Recta beach, Deception Island, West Antarctica: A retreated scarp of a submarine fault?
title_sort costa recta beach, deception island, west antarctica: a retreated scarp of a submarine fault?
publishDate 2005
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09541020_v17_n3_p418_FernandezIbanez
http://hdl.handle.net/20.500.12110/paper_09541020_v17_n3_p418_FernandezIbanez
work_keys_str_mv AT casellialbertot costarectabeachdeceptionislandwestantarcticaaretreatedscarpofasubmarinefault
_version_ 1768543809094811648

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