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dc.contributor.author
Kutterolf, Steffen
dc.contributor.author
Schindlbeck, Julie C.
dc.contributor.author
Anselmetti, Flavio S.
dc.contributor.author
Ariztegui, Daniel
dc.contributor.author
Brenner, Mark
dc.contributor.author
Curtis, Jason
dc.contributor.author
Schmid, D.
dc.contributor.author
Hodell, David
dc.contributor.author
Mueller, Andreas D.
dc.contributor.author
Perez, Liseth
dc.contributor.author
Peréz, Wendy
dc.contributor.author
Schwalb, Antje
dc.contributor.author
Frische, Matthias
dc.contributor.author
Wang, Kuo-Lung
dc.date.accessioned
2021-09-03T10:52:01Z
dc.date.available
2017-06-12T20:12:12Z
dc.date.available
2021-09-03T10:52:01Z
dc.date.issued
2016-10-15
dc.identifier.issn
0277-3791
dc.identifier.other
10.1016/j.quascirev.2016.08.023
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/129235
dc.description.abstract
Lake Petén Itzá, northern Guatemala, lies within a hydrologically closed basin in the south-central area of the Yucatán Peninsula, and was drilled under the auspices of the International Continental Scientific Drilling Program (ICDP) in 2006. At 16°55′N latitude, the lake is ideally located for study of past climate and environmental conditions in the Neotropical lowlands. Because of its great depth (>160 m), Lake Petén Itzá has a record of continuous sediment accumulation that extends well into the late Pleistocene. A key obstacle to obtaining long climate records from the region is the difficulty of establishing a robust chronology beyond ∼40 ka, the limit of 14C dating. Tephra layers within the Lake Petén Itzá sediments, however, enable development of age/depth relations beyond 40 ka. Ash beds from large-magnitude, Pleistocene-to-Holocene silicic eruptions of caldera volcanoes along the Central American Volcanic Arc (CAVA) were found throughout drill cores collected from Lake Petén Itzá. These ash beds were used to establish a robust chronology extending back 400 ka. We used major- and trace-element glass composition to establish 12 well-constrained correlations between the lacustrine tephra layers in Lake Petén Itzá sediments and dated deposits at the CAVA source volcanoes, and with their marine equivalents in eastern Pacific Ocean sediments. The data also enabled revision of eight previous determinations of erupted volumes and masses, and initial estimates for another four eruptions, as well as the designation of source areas for 14 previously unknown eruptions. The new and revised sedimentation rates for the older sediment successions identify the interglacial of MIS5a between 84 and 72 ka, followed by a stadial between 72 and 59 ka that corresponds to MIS4. We modified the age models for the Lake Petén Itzá sediment sequences, extended the paleoclimate and paleoecological record for this Neotropical region to ∼400 ka, and determined the magnitude and timing of CAVA eruptions.
en_US
dc.language.iso
en
en_US
dc.publisher
Elsevier
en_US
dc.subject
ICDP
en_US
dc.subject
Peten Itza
en_US
dc.subject
Tephrochronology
en_US
dc.subject
CAVA
en_US
dc.subject
Paleoclimate
en_US
dc.subject
Explosive volcanism
en_US
dc.title
A 400-ka tephrochronological framework for Central America from Lake Peten Itza (Guatemala) sediments
en_US
dc.type
Journal Article
dc.date.published
2016-08-30
ethz.journal.title
Quaternary Science Reviews
ethz.journal.volume
150
en_US
ethz.journal.abbreviated
Quat. Sci. Rev.
ethz.pages.start
200
en_US
ethz.pages.end
220
en_US
ethz.identifier.wos
ethz.publication.place
Amsterdam
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2017-06-12T20:12:19Z
ethz.source
ECIT
ethz.identifier.importid
imp59365551c894768486
ethz.ecitpid
pub:192199
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2017-07-15T21:05:57Z
ethz.rosetta.lastUpdated
2022-03-29T11:28:41Z
ethz.rosetta.versionExported
true
ethz.COinS
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