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Trans-Atlantic correlation of Late Cretaceous high-frequency sea-level cycles

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cris.lastimport.scopus2024-02-12T20:35:02Z
dc.abstract.enPrevious studies of Cretaceous sedimentary rocks have used multi-proxy correlation methods to suggest eustatic change, modulated by the c. 400 kyr long eccentricity rhythm. Although numerous authors have inferred eustatic changes on shorter timescales, none have demonstrated synchronous sea-level changes in separate basins on different plates, thousands of kilometres apart. Our study integrates basin-scale, three-dimensional sequence architecture, molluscan biostratigraphy, and carbon-isotope chemostratigraphy to demonstrate synchronous sea-level changes in upper Turonian to lower Coniacian shallow-marine clastic successions in the Western Canada Foreland Basin, and the Bohemian Cretaceous Basin. Depositional sequences in both basins are plotted in a common time domain using an astronomically calibrated age model, allowing direct comparison. In both basins, at least seven major transgressive events can be shown to be synchronous within the limits of combined biostratigraphic and chemostratigraphic resolution. ‘Major’ and ‘minor’ sequences of late Turonian age appear to have been paced, respectively, by the long (c. 400 kyr) and short (c. 100 kyr) eccentricity cycles. In contrast, early Coniacian sequences evidence pacing by the c. 38 kyr obliquity rhythm. Stratal architecture suggests that sequences developed in response to eustatic changes of c. 14–20 m at average rates ranging 0.08 to >1.3 m/kyr. At a time of ‘warm greenhouse’ climate, sea-level change of this magnitude and timescale may not be explicable entirely as a result of thermal- and aquifer-eustasy, and hence glacio-eustasy may also have been a contributing factor.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorJarvis, Ian
dc.contributor.authorShank, Joel A.
dc.contributor.authorLaurin, Jiří
dc.contributor.authorGröcke, Darren R.
dc.contributor.authorWalaszczyk, Ireneusz
dc.contributor.authorČech, Stanislav
dc.contributor.authorUličný, David
dc.contributor.authorPlint, A. Guy
dc.date.accessioned2024-01-26T11:04:54Z
dc.date.available2024-01-26T11:04:54Z
dc.date.issued2022
dc.description.financePublikacja bezkosztowa
dc.description.volume578
dc.identifier.doi10.1016/J.EPSL.2021.117323
dc.identifier.issn0012-821X
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/123673
dc.identifier.weblinkhttps://api.elsevier.com/content/article/PII:S0012821X21005793?httpAccept=text/xml
dc.languageeng
dc.pbn.affiliationearth and related environmental sciences
dc.relation.ispartofEarth and Planetary Science Letters
dc.relation.pages117323
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.subject.enUpper Cretaceous
dc.subject.eneustasy
dc.subject.enBohemian basin
dc.subject.enWestern Canada Foreland Basin
dc.subject.ensea-level change
dc.titleTrans-Atlantic correlation of Late Cretaceous high-frequency sea-level cycles
dc.typeJournalArticle
dspace.entity.typePublication