dc.contributor.author
Meijer, Niels
dc.contributor.author
Dupont-Nivet, Guillaume
dc.contributor.author
Licht, Alexis
dc.contributor.author
Roperch, Pierrick
dc.contributor.author
Rohrmann, Alexander
dc.contributor.author
Sun, Aijun
dc.contributor.author
Lu, Shengcheng
dc.contributor.author
Woutersen, Amber
dc.contributor.author
Nowaczyk, Norbert
dc.date.accessioned
2023-04-11T13:35:46Z
dc.date.available
2023-04-11T13:35:46Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/37777
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-37490
dc.description.abstract
The Cenozoic strata of the Xining Basin, NE Tibet, have provided crucial records for understanding the tectonic and palaeo-environmental evolution of the region. Yet, the age of the lower part of the sedimentary stratigraphy and, consequently, the early tectonic evolution of the basin remain debated. Here, we present the litho- and magnetostratigraphy of various early Eocene sections throughout the Xining Basin independently constrained by the U–Pb radiometric age of a carbonate bed. Our study extends the dated stratigraphy down to 53.0 Ma (C24n.1r) and reveals highly variable accumulation rates during the early Eocene ranging from 0.5 to 8 cm/ka. This is in stark contrast to the low but stable accumulation rates (2–3 cm/ka) observed throughout the overlying Palaeogene and Neogene strata. Such a pattern of basin infill is not characteristic of flexural subsidence as previously proposed, but rather supports an extensional origin of the Xining Basin with multiple depocentres, which subsequently coalesced into a more stable and slowly subsiding basin. Whether this extension was related to the far-field effects of the subducting Pacific Plate or the India–Asia collision remains to be confirmed by future studies.
en
dc.format.extent
20 Seiten
dc.rights.uri
https://creativecommons.org/licenses/by/4.0/
dc.subject
geochronology
en
dc.subject
northeast Tibet
en
dc.subject
palaeomagnetism
en
dc.subject
stratigraphy
en
dc.subject
Xining Basin
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::550 Geowissenschaften
dc.title
Early Eocene magnetostratigraphy and tectonic evolution of the Xining Basin, NE Tibet
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.doi
10.1111/bre.12720
dcterms.bibliographicCitation.journaltitle
Basin Research
dcterms.bibliographicCitation.number
2
dcterms.bibliographicCitation.pagestart
510
dcterms.bibliographicCitation.pageend
529
dcterms.bibliographicCitation.volume
35
dcterms.bibliographicCitation.url
https://doi.org/10.1111/bre.12720
refubium.affiliation
Geowissenschaften
refubium.affiliation.other
Institut für Geologische Wissenschaften / Fachrichtung Tektonik und Sedimentäre Systeme
refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.eissn
1365-2117
refubium.resourceType.provider
WoS-Alert