On the timing and forcing mechanisms of late Pleistocene glacial terminations: Insights from a new high-resolution benthic stable oxygen isotope record of the eastern Mediterranean

Konijnendijk, T.; Ziegler, Martin; Lourens, Lucas Joost

doi:10.1016/j.quascirev.2015.10.005

Cited by 48 publications

(54 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For this, we have established the first benthic foraminifera δ 18 O and δ 13 C records of shallow marine (~560 m water depth) IODP Site U1386 located on the upper slope in the Gulf of Cadiz (see Figure ). We compare our results to the benthic oxygen isotope record of the ambient Mediterranean Sea, derived from the eastern basin [ Konijnendijk et al , ]. The results of this study demonstrate that the MOW underwent significant changes in both composition and flow dynamics during the Middle to Late Pleistocene which potentially impacted North Atlantic circulation patterns.…”

Section: Introductionmentioning

confidence: 72%

“…MIDDLE TO LATE PLEISTOCENE MOW 634 PUBLICATIONS Paleoceanography RESEARCH ARTICLE record of the ambient Mediterranean Sea, derived from the eastern basin [Konijnendijk et al, 2015]. The results of this study demonstrate that the MOW underwent significant changes in both composition and flow dynamics during the Middle to Late Pleistocene which potentially impacted North Atlantic circulation patterns.…”

Section: Introductionmentioning

confidence: 77%

“…The glacial δ 18 O enrichment events are marked by small red arrows. MIS stages (blue columns) follow [ Lisiecki and Raymo , ] (b) Comparison of the interspecies corrected δ 18 O signals between Site U1386 (black line) and ODP sites 967 and 968 (orange line) [ Konijnendijk et al , ]. Isotopic gradient marked as grey shaded area.…”

Section: Resultsmentioning

confidence: 99%

“…Accordingly, the strongly decreased grain size variability in Phase II between ~475 kyr (MIS 13/MIS 12) and ~130 kyr (MIS 6/MIS 5) would suggest that MOW influence at Site U1386 was genuinely reduced or absent prior to the upper Pleistocene during both glacial and interglacial periods (Figure a). The comparison between the δ 18 O records of Site U1386 and that of ODP Sites 967/968 in the Eastern Mediterranean Sea [ Konijnendijk et al , ], however, point to a different scenario (Figure b). This comparison yields a persistent isotopic gradient during the past ~130 ka [ Kaboth et al ., ] and a strongly reduced gradient, both during glacial and interglacial periods, prior to 130 ka.…”

Section: Discussionmentioning

confidence: 99%

“…To evaluate changes in Mediterranean Outflow influence at Site U1386 during the last ~570 kyr, we compared the δ 18 O record from Site U1386 in the Gulf of Cadiz to the δ 18 O stack of ODP Sites 967 and 968 in the eastern Mediterranean Sea [ Konijnendijk et al , ]. Due to the lack of sufficient long stable oxygen isotope records at intermediate water depth from the Mediterranean Sea during the Late to Middle Pleistocene, we are limited to the Eastern Mediterranean Sea deep‐water record for comparison.…”

Section: Methodsmentioning

confidence: 99%

See 4 more Smart Citations

Mediterranean Outflow Water dynamics during the past ~570 kyr: Regional and global implications

et al. 2017

View full text Add to dashboard Cite

The Gulf of Cadiz constitutes a prime area to study teleconnections between the North Atlantic Ocean and climate change in the Mediterranean realm. In particular, the highly saline Mediterranean Outflow Water (MOW) is an important modulator of the North Atlantic salt budget on intermediate water levels. However, our understanding of its paleoceanographic evolution is poorly constrained due to the lack of high‐resolution proxy records that predate the last glacial cycle. Here we present the first continuous and high‐resolution (~ 1 kyr) benthic δ18O and δ13C as well as grain size records from Integrated Ocean Drilling Program Site U1386 representing the last ~570 kyr. We find three distinct phases of MOW variability throughout the Late to Middle Pleistocene at Site U1386 associated with prominent shifts in its composition and flow strength. We attribute this long‐term variability to changes in water mass sourcing of the MOW. Superimposed on the long‐term change in water mass sourcing is the occurrence of distinct and precession paced δ18O enrichment events, which contrast the pattern of global ice volume change as inferred from the global mean δ18O signal (i.e., LR04) but mimics that of the adjacent Mediterranean Sea. We attribute these enrichment events to a profound temperature reduction and salinity increases of the MOW, aligning with similar changes in the Mediterranean source region. These events might further signify ice volume increases as inferred from significant sea level drops recorded in the Red Sea and/or increased influence of North Atlantic intermediate water masses when MOW influence was absent at Site U1386.

show abstract

Section: Introductionmentioning

confidence: 72%

Section: Introductionmentioning

confidence: 77%

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 3 more Smart Citations

Mediterranean Outflow Water dynamics during the past ~570 kyr: Regional and global implications

et al. 2017

View full text Add to dashboard Cite

show abstract

Early-Middle Pleistocene benthic turnover and oxygen isotope stratigraphy from the Central Mediterranean (Valle di Manche, Crotone Basin, Italy): Data and trends

et al. 2018

View full text Add to dashboard Cite

Ostracod faunal turnover and oxygen isotope data (foraminifera) along the Valle di Manche (VdM) section are herein compiled. Specifically, the material reported in this work includes quantitative palaeoecological data and patterns of ostracod fauna framed within a high-resolution oxygen isotope stratigraphy (δ18O) from Uvigerina peregrina. In addition, the multivariate ostracod faunal stratigraphic trend (nMDS axis-1 sample score) is calibrated using bathymetric distributions of extant molluscs sampled from the same stratigraphic intervals along the VdM section. Data and analyses support the research article “Dynamics of benthic marine communities across the Early-Middle Pleistocene boundary in the Mediterranean region (Valle di Manche, Southern Italy): biotic and stratigraphic implications” Rossi et al. [1].

show abstract

Controls on long-term changes in bathyal bivalve biomass: The Pleistocene glacial–interglacial record in the eastern Mediterranean

Porz,

Zuschin,

Strotz

et al. 2024

Deep Sea Research Part I: Oceanographic Research Papers

View full text Add to dashboard Cite

On the timing and forcing mechanisms of late Pleistocene glacial terminations: Insights from a new high-resolution benthic stable oxygen isotope record of the eastern Mediterranean

Cited by 48 publications

References 51 publications

Mediterranean Outflow Water dynamics during the past ~570 kyr: Regional and global implications

Mediterranean Outflow Water dynamics during the past ~570 kyr: Regional and global implications

Early-Middle Pleistocene benthic turnover and oxygen isotope stratigraphy from the Central Mediterranean (Valle di Manche, Crotone Basin, Italy): Data and trends

Controls on long-term changes in bathyal bivalve biomass: The Pleistocene glacial–interglacial record in the eastern Mediterranean

Contact Info

Product

Resources

About