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Holocene relative sea-level change along the tectonically active Chilean coast

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dc.contributor.authorGarrett, E. Spenceren
dc.contributor.authorMelnick, Danielen
dc.contributor.authorDura, Tinaen
dc.contributor.authorCisternas, Marcoen
dc.contributor.authorEly, Lisa L.en
dc.contributor.authorWesson, Robert L.en
dc.contributor.authorJara-Munoz, Juliusen
dc.contributor.authorWhitehouse, Pippa L.en
dc.contributor.departmentGeosciencesen
dc.coverage.countryChileen
dc.date.accessioned2020-06-03T14:11:53Zen
dc.date.available2020-06-03T14:11:53Zen
dc.date.issued2020-05-15en
dc.description.abstractWe present a comprehensive relative sea-level (RSL) database for north, central, and south-central Chile (18.5 degrees S - 43.6 degrees S) using a consistent, systematic, and internationally comparable approach. Despite its latitudinal extent, this coastline has received little rigorous or systematic attention and details of its RSL history remain largely unexplored. To address this knowledge gap, we re-evaluate the geological context and age of previously published sea-level indicators, providing 78 index points and 84 marine or terrestrial limiting points spanning from 11 ka to the present day. Many data points were originally collected for research in other fields and have not previously been examined for the information they provide on sea-level change. Additionally, we describe new sea-level data from four sites located between the Gulf of Arauco and Valdivia. By compiling RSL histories for 11 different regions, we summarise current knowledge of Chilean RSL. These histories indicate mid Holocene sea levels above present in all regions, but at highly contrasting elevations from similar to 30 m to <5 m. We compare the spatiotemporal distribution of sea-level data points with a suite of glacial isostatic adjustment models and place first-order constraints on the influence of tectonic processes over 10(3)-10(4) year timescales. While seven regions indicate uplift rates <1 m ka(-1), the remaining regions may experience substantially higher rates. In addition to enabling discussion of the factors driving sea-level change, our compilation provides a resource to assist attempts to understand the distribution of archaeological, palaeoclimatic, and palaeoseismic evidence in the coastal zone and highlights directions for future sea-level research in Chile. (C) 2020 Elsevier Ltd. All rights reserved.en
dc.description.adminPublic domain – authored by a U.S. government employeeen
dc.description.notesEG undertook this work while in receipt of funding from the European Union/Durham University (COFUND under the DIFeREns 2 scheme). The authors acknowledge financial support from the Millennium Nucleus CYCLO "The Seismic Cycle Along Subduction Zones" funded by the Millennium Scientific Initiative (ICM) of the Chilean Government Grant Number NC160025. Additional support for MC and DM was provided by FONDECYT (Chile), project No 1190258. TD was supported by the US National Science Foundation (NSF) awards EAR-1566253, EAR-1624795, and EAR-1624533. LE was supported by National Geographic Society (US) Research Grant 8577-08 and NSF awards EAR-1036057, EAR-1145170, and EAR1624542. JJM was supported by the Deutsche Forschungsgemeindschaft Grant JA 2860/1-1. The authors acknowledge PALSEA (a PAGES/INQUA working group) and HOLSEA (an INQUA project) for useful discussions at the 2019 meeting, Dublin, Ireland. We thank Nicole Khan and Matteo Vacchi for their constructive reviews. This is a contribution to International Geoscience Programme (IGCP) project 639. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.en
dc.description.sponsorshipEuropean Union/Durham University (COFUND under the DIFeREns 2 scheme); Millennium Nucleus CYCLO "The Seismic Cycle Along Subduction Zones" - Millennium Scientific Initiative (ICM) of the Chilean Government [NC160025]; FONDECYT (Chile)Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT)CONICYT FONDECYT [1190258]; US National Science Foundation (NSF)National Science Foundation (NSF) [EAR-1566253, EAR-1624795, EAR-1624533]; National Geographic Society (US)National Geographic Society [8577-08]; NSFNational Science Foundation (NSF) [EAR-1036057, EAR-1145170, EAR1624542]; Deutsche Forschungsgemeindschaft GrantGerman Research Foundation (DFG) [JA 2860/1-1]; International Geoscience Programme (IGCP) project [639]en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1016/j.quascirev.2020.106281en
dc.identifier.issn0277-3791en
dc.identifier.other106281en
dc.identifier.urihttp://hdl.handle.net/10919/98679en
dc.identifier.volume236en
dc.language.isoenen
dc.rightsPublic Domainen
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/en
dc.subjectHoloceneen
dc.subjectSea-level changesen
dc.subjectSouth Americaen
dc.subjectData analysisen
dc.subjectSea-level databaseen
dc.subjectGlacial isostatic adjustmenten
dc.subjectTectonicsen
dc.titleHolocene relative sea-level change along the tectonically active Chilean coasten
dc.title.serialQuaternary Science Reviewsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

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