dc.date.accessioned | 2020-09-30T18:25:17Z | |
dc.date.available | 2020-09-30T18:25:17Z | |
dc.date.created | 2020-09-28T14:47:53Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Sames, Benjamin Wagreich, Michael Conrad, Clinton Phillips Iqbal, S. . Aquifer-eustasy as the main driver of short-term sea-level fluctuations during Cretaceous hothouse climate phases. Geological Society Special Publication. 2020, 498, 9-38 | |
dc.identifier.uri | http://hdl.handle.net/10852/80180 | |
dc.description.abstract | A review of short-term (<3 myr: c. 100 kyr to 2.4 myr) Cretaceous sea-level fluctuations of several tens of metres indicates recent fundamental progress in understanding the underlying mechanisms for eustasy, both in timing and in correlation. Cretaceous third- and fourth-order hothouse sea-level changes, the sequence-stratigraphic framework, are linked to Milankovitch-type climate cycles, especially the longer-period sequence-building bands of 405 kyr and 1.2 myr. In the absence of continental ice sheets during Cretaceous hothouse phases (e.g. Cenomanian–Turonian), growing evidence indicates groundwater-related sea-level cycles: (1) the existence of Milankovitch-type humid-arid climate oscillations, proven via intense humid weathering records during times of regression and sea-level lowstands; (2) missing or inverse relationships of sea-level and the marine δ18O archives, i.e. the lack of a pronounced positive excursion, cooling signal during sea-level lowstands; and (3) the anti-phase relationship of sea and lake levels, attesting to high groundwater levels and charged continental aquifers during sea-level lowstands. This substantiates the aquifer-eustasy hypothesis. Rates of aquifer-eustatic sea-level change remain hard to decipher; however, reconstructions range from a very conservative minimum estimate of 0.04 mm a−1 (longer time intervals) to 0.7 mm a−1 (shorter, probably asymmetric cycles). Remarkably, aquifer-eustasy is recognized as a significant component for the Anthropocene sea-level budget. | |
dc.language | EN | |
dc.rights | Attribution 4.0 International | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.title | Aquifer-eustasy as the main driver of short-term sea-level fluctuations during Cretaceous hothouse climate phases | |
dc.type | Journal article | |
dc.creator.author | Sames, Benjamin | |
dc.creator.author | Wagreich, Michael | |
dc.creator.author | Conrad, Clinton Phillips | |
dc.creator.author | Iqbal, S. | |
cristin.unitcode | 185,15,22,40 | |
cristin.unitname | Senter for Jordens utvikling og dynamikk | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |
dc.identifier.cristin | 1834347 | |
dc.identifier.bibliographiccitation | info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Geological Society Special Publication&rft.volume=498&rft.spage=9&rft.date=2020 | |
dc.identifier.jtitle | Geological Society Special Publication | |
dc.identifier.volume | 498 | |
dc.identifier.issue | 1 | |
dc.identifier.startpage | 9 | |
dc.identifier.endpage | 38 | |
dc.identifier.doi | https://doi.org/10.1144/SP498-2019-105 | |
dc.identifier.urn | URN:NBN:no-83285 | |
dc.type.document | Tidsskriftartikkel | |
dc.type.peerreviewed | Peer reviewed | |
dc.source.issn | 0305-8719 | |
dc.identifier.fulltext | Fulltext https://www.duo.uio.no/bitstream/handle/10852/80180/2/Sames_etal_GSL2020.pdf | |
dc.type.version | PublishedVersion | |
dc.relation.project | NFR/223272 | |
dc.relation.project | NFR/288449 | |