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The Byers Basin: Jurassic-Cretaceous tectonic and depositional evolution of the forearc deposits of the South Shetland Islands and its implications for the northern Antarctic Peninsula

Bastias, Joaquin; Calderón, Mauricio; Israel, Lea; Hervé, Francisco; Spikings, Richard; Pankhurst, Robert J; Castillo Gonzalez, Paula; Fanning, Christopher Mark; Ugalde, Raúl

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This paper addresses the Jurassic–Cretaceous stratigraphic evolution of fore-arc deposits exposed along the west coast of the northern Antarctic Peninsula. In the South Shetland Islands, Upper Jurassic deepmarine sediments are uncomformably overlain by a Lower Cretaceous volcaniclastic sequence that crops out on Livingston, Snow and Low islands. U-Pb zircon ages are presented for the upper Anchorage Formation (153.1 ± 1.7 Ma) and the Cape Wallace granodiorite of Low Island (137.1 ± 1.7 Ma)...[Show more]

dc.contributor.authorBastias, Joaquin
dc.contributor.authorCalderón, Mauricio
dc.contributor.authorIsrael, Lea
dc.contributor.authorHervé, Francisco
dc.contributor.authorSpikings, Richard
dc.contributor.authorPankhurst, Robert J
dc.contributor.authorCastillo Gonzalez, Paula
dc.contributor.authorFanning, Christopher Mark
dc.contributor.authorUgalde, Raúl
dc.date.accessioned2020-09-17T00:57:14Z
dc.identifier.issn0020-6814
dc.identifier.urihttp://hdl.handle.net/1885/210575
dc.description.abstractThis paper addresses the Jurassic–Cretaceous stratigraphic evolution of fore-arc deposits exposed along the west coast of the northern Antarctic Peninsula. In the South Shetland Islands, Upper Jurassic deepmarine sediments are uncomformably overlain by a Lower Cretaceous volcaniclastic sequence that crops out on Livingston, Snow and Low islands. U-Pb zircon ages are presented for the upper Anchorage Formation (153.1 ± 1.7 Ma) and the Cape Wallace granodiorite of Low Island (137.1 ± 1.7 Ma) as well as 40Ar/39Ar ages of 136–139 Ma for Low Island andesites. Data are also presented for a U-Pb age of 109.0 ± 1.4 Ma for the upper volcanic succession of Snow Island. In combination with published stratigraphy, these data provide a refined chrono- and litho-stratigraphic framework for the deposits herein referred to as the Byers Basin. Tentative correlation is explored with previously described deposits on Adelaide and Alexander islands, which could suggest further continuation of the Byers Basin towards the south. We also discuss possible correlation of the Byers Basin with the Larsen Basin, a sequence that shows the evolution of foreland to back-arc deposits more or less contemporaneously with the fore-arc to intra-arc evolution of the Byers Basin
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherV.H. Winston & Sons
dc.rights© 2019 Informa UK Limited, trading as Taylor & Francis Group
dc.sourceInternational Geology Review
dc.titleThe Byers Basin: Jurassic-Cretaceous tectonic and depositional evolution of the forearc deposits of the South Shetland Islands and its implications for the northern Antarctic Peninsula
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolumeOnline
dc.date.issued2019
local.identifier.absfor040311 - Stratigraphy (incl. Biostratigraphy and Sequence Stratigraphy)
local.identifier.absfor040313 - Tectonics
local.identifier.absfor040303 - Geochronology
local.identifier.ariespublicationu3102795xPUB4541
local.publisher.urlhttp://www.tandfonline.com/toc/tigr20/current
local.type.statusPublished Version
local.contributor.affiliationBastias, Joaquin, Universidad de Chile
local.contributor.affiliationCalderón, Mauricio, Universidad Andrés Bello
local.contributor.affiliationIsrael, Lea, Universidad de Chile
local.contributor.affiliationHervé, Francisco, Universidad Andrés Bello
local.contributor.affiliationSpikings, Richard, Université de Genève
local.contributor.affiliationPankhurst, Robert J, British Geological Survey
local.contributor.affiliationCastillo Gonzalez, Paula, College of Science, ANU
local.contributor.affiliationFanning, Christopher, College of Science, ANU
local.contributor.affiliationUgalde, Raúl, Universidad de la República
local.description.embargo2037-12-31
local.bibliographicCitation.startpage1
local.bibliographicCitation.lastpage16
local.identifier.doi10.1080/00206814.2019.1655669
local.identifier.absseo970104 - Expanding Knowledge in the Earth Sciences
dc.date.updated2020-11-15T07:20:47Z
local.identifier.thomsonIDWOS:000482734800001
CollectionsANU Research Publications

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