Review: Short-term sea-level changes in a greenhouse world - A view from the Cretaceous

Sames, B.
Wagreich, M.
Wendler, J. E.
Haq, B. U.
Conrad, C. P.
Melinte-Dobrinescu, M. C.
Hu, X.
Wendler, I.
Wolfgring, E.
Yılmaz, İsmail Ömer
Zorina, S. O.
This review provides a synopsis of ongoing research and our understanding of the fundamentals of sea-level change today and in the geologic record, especially as illustrated by conditions and processes during the Cretaceous greenhouse climate episode. We give an overview of the state of the art of our understanding on eustatic (global) versus relative (regional) sea level, as well as long-term versus short-term fluctuations and their drivers. In the context of the focus of UNESCO-IUGS/IGCP project 609 on Cretaceous eustatic, short-term sea-level and climate changes, we evaluate the possible evidence for glacio-eustasy versus alternative or additional mechanisms for continental water storage and release for the Cretaceous greenhouse and hothouse phases during which the presence of larger continental ice shields is considered unlikely. Increasing evidence in the literature suggests a correlation between long-period orbital cycles and depositional cycles that reflect sea-level fluctuations, implying a globally synchronized forcing of (eustatic) sea level. Fourth-order depositional sequences seem to be related to a similar to 405 ka periodicity, which most likely represents long-period orbital eccentricity control on sea level and depositional cycles. Third-order cyclidty, expressed as time-synchronous sea level falls of similar to 20 to 110 m on similar to 0.5 to 3.0 Ma timescales in the Cretaceous, are increasingly recognized as connected to climate cycles triggered by long-term astronomical cycles that have periodicity ranging from similar to 1.0 to 2.4 Ma. Future perspectives of research on greenhouse sea-level changes comprise a high-precision time-scale for sequence stratigraphy and eustatic sea-level changes and high-resolution marine to non-marine stratigraphic correlation. (C) 2015 Published by Elsevier B.V.


Multi-proxy palaeoecological responses to water-level fluctuations in three shallow Turkish lakes
Levi, Eti E.; Bezirci, Gizem; Cakiroglu, Ayse Idil; Turner, Simon; Bennion, Helen; Kernan, Martin; Jeppesen, Erik; Beklioğlu, Meryem (Elsevier BV, 2016-05-01)
Natural or human-induced water-level fluctuations influence the structure and function of shallow lakes, especially in semi-arid to arid climate regions. In order to reliably interpret the effect of water-level changes from sedimentary remains in the absence of historical data, it is crucial to understand the variation in sedimentary proxies in relation to water level measurements. Here, we took advantage of existing water surface elevation data on three large shallow lakes in Turkey to elucidate the impact...
Stable isotopes and geochemistry of a Campanian-Maastrichtian pelagic succession, Mudurnu-Goynuk Basin, NW Turkey: Implications for palaeoceanography, palaeoclimate and sea-level fluctuations
Acikalin, Sanem; OCAKOĞLU, FARUK; Yılmaz, İsmail Ömer; Vonhof, Hubert; Hakyemez, Aynur; Smit, Jan (Elsevier BV, 2016-01-01)
This study focuses on the palaeoclimatic evolution and relative sea-level fluctuations of the northern branch of NeoTethys during the late Campanian-early Danian. The studied succession (ismailler Section) is located in the Mudurnu-Goynuk Basin, NW Turkey and dominated by apparently continuous pelagic muddy deposits. Stable isotopic and elemental compositions of the mudrocks are investigated in order to evaluate the palaeoceanographic conditions as well as broad tectonic reconstruction of the basin. The mud...
Ecological response to collapse of the biological pump following the mass extinction at the Cretaceous-Paleogene boundary
Vellekoop, Johan; Woelders, Lineke; Acikalin, Sanem; Smit, Jan; van de Schootbrugge, Bas; Yılmaz, İsmail Ömer; Brinkhuis, Henk; Speijer, Robert P. (Copernicus GmbH, 2017-02-27)
It is commonly accepted that the mass extinction associated with the Cretaceous-Paleogene (K-Pg) boundary (similar to 66 Ma) is related to the environmental effects of a large extraterrestrial impact. The biological and oceanographic consequences of the mass extinction are, however, still poorly understood. According to the "Living Ocean" model, the biological crisis at the K-Pg boundary resulted in a long-term reduction of export productivity in the early Paleocene. Here, we combine organic-walled dinoflag...
Surprisingly young Rb/Sr ages from the Simav extensional detachment fault zone, northern Menderes Massif, Turkey
Bozkurt, Erdin; Bugdaycioglu, Cagri (Elsevier BV, 2011-12-01)
The present paper demonstrates that exposed semi-brittle-brittle detachment fault zones, in addition to footwall mylonites and syn-extensional granitoids, can be used to date the timing of faulting and constrain the history and evolution of metamorphic core complexes. We employed Rb-Sr geochronology on micas, sampled directly from a part of the Simav detachment fault (SDF) zone in the northern Menderes Massif (western Turkey). The exposed part of the fault zone is marked by similar to 3-m thick zone of low-...
Do interactions between eutrophication and CO2 enrichment increase the potential of elodeid invasion in tropical lakes?
Mormul, Roger Paulo; Thomaz, Sidinei Magela; Jeppesen, Erik (Springer Science and Business Media LLC, 2020-09-01)
Understanding the roles of eutrophication and CO2 enrichment in the invasive success of aquatic plants is an ecological challenge with relevance to climate change. We tested the hypotheses that (1) eutrophication of freshwaters increases the invasive success of the submersed aquatic plant Hydrilla verticillata; (2) CO2-enrichment makes freshwater systems more prone to H. verticillata invasion; and (3) interactions between eutrophication and CO2 enrichment increase the potential of H. verticillata invasion. ...
Citation Formats
B. Sames et al., “Review: Short-term sea-level changes in a greenhouse world - A view from the Cretaceous,” PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, pp. 393–411, 2016, Accessed: 00, 2020. [Online]. Available: