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dc.contributor.author
Amorosi, Alessandro
dc.contributor.author
Bruno, Luigi
dc.contributor.author
Campo, Bruno
dc.contributor.author
Costagli, Bianca
dc.contributor.author
Hong, Wan
dc.contributor.author
Picotti, Vincenzo
dc.contributor.author
Vaiani, Stefano C.
dc.date.accessioned
2020-12-21T16:59:03Z
dc.date.available
2020-10-02T02:46:45Z
dc.date.available
2020-10-02T11:13:28Z
dc.date.available
2020-12-21T16:59:03Z
dc.date.issued
2021-01
dc.identifier.issn
0037-0746
dc.identifier.issn
1365-3091
dc.identifier.other
10.1111/sed.12784
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/444047
dc.identifier.doi
10.3929/ethz-b-000444047
dc.description.abstract
Despite increased application of subsurface datasets below the limits of seismic resolution, reconstructing near-surface deformation of shallow key stratigraphic markers beneath modern alluvial and coastal plains through sediment core analysis has received little attention. Highly resolved stratigraphy of Upper Pleistocene to Holocene (Marine Isotope Stage 5e to Marine Isotope Stage 1) alluvial, deltaic and coastal depositional systems across the southern Po Plain, down to 150 m depth, provides an unambiguous documentation on the deformation of previously flat-lying strata that goes back in time beyond the limits of morphological, historical and palaeoseismic records. Five prominent key horizons, accurately selected on the basis of their sedimentological characteristics and typified for their fossil content, were used as highly effective stratigraphic markers (M1 to M5) that can be tracked for tens of kilometres across the basin. A facies-controlled approach tied to a robust chronology (102 radiocarbon dates) reveals considerable deformation of laterally extensive nearshore (M1), continental (M2 and M3) and lagoon (M4 and M5) marker beds originally deposited in a horizontal position (M1, M4 and M5). The areas where antiformal geometries are best observed are remarkably coincident with the axes of buried ramp anticlines, across which new seismic images reveal substantially warped stratal geometries of Lower Pleistocene strata. The striking spatial coincidence of fold crests with the epicentres of historic and instrumental seismicity suggests that deformation of marker beds M1 to M5 might reflect, in part at least, syntectonically generated relief and, thus, active tectonism. Precise identification and lateral tracing of chronologically constrained stratigraphic markers in the(14)C time window through combined sedimentological and palaeoecological data may delineate late Quaternary subsurface stratigraphic architecture at an unprecedented level of detail, outlining cryptic stratal geometries at the sub-seismic scale. This approach is highly reproducible in tectonically active Quaternary depositional systems and can help to assess patterns of active deformation in the subsurface of modern alluvial and coastal plains worldwide.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Wiley
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
Holocene
en_US
dc.subject
near-surface deformation
en_US
dc.subject
Po Plain
en_US
dc.subject
Quaternary
en_US
dc.subject
sediment core analysis
en_US
dc.subject
stratigraphic marker
en_US
dc.title
Deformation patterns of upper Quaternary strata and their relation to active tectonics, Po Basin, Italy
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2020-07-20
ethz.journal.title
Sedimentology
ethz.journal.volume
68
en_US
ethz.journal.issue
1
en_US
ethz.journal.abbreviated
Sedimentol
ethz.pages.start
402
en_US
ethz.pages.end
424
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Oxford
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02330 - Dep. Erdwissenschaften / Dep. of Earth Sciences::02704 - Geologisches Institut / Geological Institute::03754 - Willett, Sean / Willett, Sean
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02330 - Dep. Erdwissenschaften / Dep. of Earth Sciences::02704 - Geologisches Institut / Geological Institute::03754 - Willett, Sean / Willett, Sean
ethz.date.deposited
2020-10-02T02:46:49Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2020-12-21T16:59:12Z
ethz.rosetta.lastUpdated
2023-02-06T21:12:27Z
ethz.rosetta.versionExported
true
ethz.COinS
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