Liquiñe‑Ofqui’s fast slipping intra‑volcanic arc crustal faulting above the subducted Chile Ridge
Author
dc.contributor.author
De Pascale, Gregory P.
Author
dc.contributor.author
Froude, Melanie
Author
dc.contributor.author
Penna, Ivanna
Author
dc.contributor.author
Hermanns, Reginald L
Author
dc.contributor.author
Sepúlveda, Sergio A.
Author
dc.contributor.author
Moncada, Daniel
Author
dc.contributor.author
Pérsico, Mario
Author
dc.contributor.author
Easton Vargas, Gabriel
Author
dc.contributor.author
Villalobos, Angelo
Author
dc.contributor.author
Gutiérrez, Francisco
Admission date
dc.date.accessioned
2022-01-10T21:30:13Z
Available date
dc.date.available
2022-01-10T21:30:13Z
Publication date
dc.date.issued
2021
Cita de ítem
dc.identifier.citation
Scientific Reports | (2021) 11:7069
es_ES
Identifier
dc.identifier.other
10.1038/s41598-021-86413-w
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/183644
Abstract
dc.description.abstract
The southernmost portion of the Liquiñe-Ofqui fault zone (LOFZ) lies within the proposed slab window
which formed due to oblique subduction of the Chile Ridge in Patagonia. Mapping of paleo-surface
ruptures, offsets, and lithological separations along the master fault allowed us to constrain geologic
slip rates for the first time with dextral rates of 11.6–24.6 mm/year (Quaternary) and 3.6–18.9 mm/
year (Late-Cenozoic) respectively. We had trouble mapping the LOFZ in one local because of a partially
collapsed and previously undiscovered volcanic complex, Volcan Mate Grande (VMG: 1,280 m high and
thus Vesuvius-sized) that grew in a caldera also offset along the LOFZ and has distinct geochemistry
from adjacent stratovolcanoes. Besides the clear seismic and volcanic hazard implications, the
structural connection along the main trace of the fast slipping LOFZ and geochemistry of VMG
provides evidence for the slab window and insight into interplay between fast-slipping crustal intra-arc
crustal faults and volcanoes.
es_ES
Patrocinador
dc.description.sponsorship
Universidad de Chile (FCFM)
FONDECYT (ANID/Conicyt Chile): LOFZ slip rates, a CIMAR24 grant from the Chilean Navy (SHOA/CONA) 11160038
UK Research & Innovation (UKRI)
Natural Environment Research Council (NERC) NE/N000315/1
NE/N000315/2
Centro de Excelencia en Geotermia de Los Andes (CEGA)
FONDECYT (ANID) 11170210
1180577
es_ES
Lenguage
dc.language.iso
en
es_ES
Publisher
dc.publisher
Nature Research
es_ES
Type of license
dc.rights
Attribution-NonCommercial-NoDerivs 3.0 United States