The continental record of stage 11: A review

Rousseau, Denis‐Didier

doi:10.1029/137gm15

Cited by 13 publications

(3 citation statements)

References 29 publications

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“…However, some marine data sets have been interpreted as showing that during MIS 11, sea surface temperatures were no warmer than recent temperatures [Hodell et al, 2000;King and Howard, 2000;Becquey and Gersonde, 2002, 2003a, 2003b]; yet until the present, the WAIS still survives. In contrast, various terrestrial temperature records have been interpreted as showing that MIS 11 was warmer than both MIS 5e and the Holocene (see review by Rousseau [1999]). Sea level records have suggested a sea level rise above Holocene levels of up to +20 m during MIS 11 [Kindler and Hearty, 2000;Hearty et al, 1999;Brigham-Grette, 1999].…”

Section: Introductionmentioning

confidence: 99%

Determination of Antarctic Ice Sheet stability over the last ∼500 ka through a study of iceberg-rafted debris

et al. 2010

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We have analyzed ice‐rafted debris (IRD) from the South Atlantic Ocean (∼43°S, 9°E) in order to investigate Antarctic Ice Sheet history during the late Pleistocene; the cores examined for this study include piston core TN057‐6‐PC4 and Ocean Drilling Program Leg 177 drill core Site 1090 (177‐1090). Over the last 500 ka at this distal location, IRD arrived during both glacials and interglacials. IRD is present even during warmer intervals, is greatest during colder intervals, and is absent only during terminations and a few other brief intervals. Four different methods are used to normalize the IRD counts, which are then compared to support our interpretation. Several other high‐quality climate proxies from this location also aid our interpretations. We conclude that sea surface temperatures are the primary control on the delivery of IRD to this site. During cold times more icebergs survived to reach this distal location. During warm times only a few of the largest icebergs could travel this far. Garnets found in these sediments suggest a likely East Antarctic origin for the IRD; the presence of garnets even during warm intervals further strongly supports that the iceberg source must be the East Antarctic Ice Sheet (EAIS). Therefore, the EAIS must have continued to reach the ocean at least in some part of its margin throughout the last 500 ka. On the other hand, we cannot specifically trace any IRD to the West Antarctic Ice Sheet (WAIS), so WAIS persistence cannot be tested. A particular radiolarian, identified as Dictyocoryne profunda (Ehrenberg) (sensu Boltovskoy (1998)), shows up in the examined size fraction generally only during warm phases. We suggest that D. profunda is a sensitive indicator of warm water temperatures and that it deserves further study.

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Section: Introductionmentioning

confidence: 99%

Determination of Antarctic Ice Sheet stability over the last ∼500 ka through a study of iceberg-rafted debris

et al. 2010

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“…Of particular relevance to this study is the occurrence of the age‐diagnostic molluscan group, the ‘ Lyrodiscus assemblage’ in Hoxnian Interglacial deposits. The group represents a distinctive suite of taxa representing forest environments (Rousseau et al ., 1992; Antoine and Limondin‐Lozouet, 2004; Limondin‐Lozouet and Antoine, 2006; Limondin‐Lozouet et al ., 2006, 2020; Cliquet et al ., 2009), and includes species representing warmer and more humid conditions than the present day (Rousseau, 2003; Preece et al ., 2007). The Lyrodiscus assemblage has been identified in a series of independently dated MIS 11 tufa deposits including Beeches Pit in Britain (Fig.…”

Section: Background and Study Areamentioning

confidence: 99%

Environments of the climatic optimum of MIS 11 in Britain: evidence from the tufa sequence at Hitchin, southeast England

Sherriff

Schreve

Candy

et al. 2021

J Quaternary Science

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Marine Oxygen Isotope Stage 11 (MIS 11, Hoxnian Interglacial) is an important interval for understanding both climate change in an interglacial partially analogous to the Holocene and the response of geomorphic processes, biotic systems, and hominin populations to these changes. In Britain, many sites correlated to MIS 11 have not been studied since the mid-20th century and require reinvestigation, including the Hitchin tufa sequence, where a rich, non-marine molluscan assemblage was originally recovered. Re-excavation of the Hitchin tufa sequence for this study was focussed on combined sedimentological, micromorphological and geochemical analyses of the deposits. These indicate that tufa formation occurred within a perched springline system under temperate climatic conditions. Shifts between paludal and fluvial tufa facies within this system occur concomitantly with changes in carbonate geochemistry, representing increased humidity caused by a change in rainfall amount or seasonality. This research enables a correlation of the sequence to the climatic optimum of MIS 11c, the main warm phase of MIS 11, and permits further insights into temperature and hydrological changes in this interval by generating the first geochemical records of hydroclimatic evolution during the MIS 11 thermal maximum in Britain.

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“…The study of raised beaches located in tectonically stable regions and of ice cap dynamics during MIS11 revealed that the sea level was 6 to 13 m higher than today on average (de Vernal and Hillaire-Marcel, 2008; Elderfield et al, 2012; Roberts et al, 2012). Moreover, the analysis of terrestrial records corresponding to MIS11 has shown that this warm isotope stage was globally humid (Rousseau, 2003; Prokopenko et al, 2010; Melles et al, 2012). The configuration of astronomical parameters during MIS11, especially the weak precession, induced weaker insolation variability than for other warm isotope stages (Berger and Loutre, 2002).…”

Section: Introductionmentioning

confidence: 99%

Reconstruction of sea-surface temperatures in the Canary Islands during Marine Isotope Stage 11

et al. 2019

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The study of paleoclimates enables us to improve and better constrain climate models in order to forecast future climate variations. Marine Isotope Stage 11 (MIS11), which began around 425,000 yr BP and lasted about 65,000 yr, is a warm isotope stage of paramount importance, because the astronomical configuration was similar to the one characterizing the Holocene. Therefore, this warm isotope stage is the most appropriate analog to present-day climate known to date. This study aims to provide new data on sea-surface temperatures (SSTs) inferred from the carbon and oxygen isotope compositions of skeletal carbonates of marine invertebrates preserved in two marine deposits of the Canary Islands located at Piedra Alta, Lanzarote, and Arucas, Gran Canaria. According to published isotopic fractionation equations the marine deposit from Arucas recorded SSTs of 15.9 ± 2.2°C on average, while the tsunamite from Piedra Alta recorded SSTs of 21.2 ± 1.9°C on average. Absolute dating, mollusc assemblages, and calculated marine temperatures suggest that the Arucas marine deposit corresponds to the beginning of MIS11, while the Piedra Alta tsunamite was formed during MIS11c. These results show that low latitudes also experienced sizable SST changes during interglacial stages.

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The continental record of stage 11: A review

Cited by 13 publications

References 29 publications

Determination of Antarctic Ice Sheet stability over the last ∼500 ka through a study of iceberg-rafted debris

Determination of Antarctic Ice Sheet stability over the last ∼500 ka through a study of iceberg-rafted debris

Environments of the climatic optimum of MIS 11 in Britain: evidence from the tufa sequence at Hitchin, southeast England

Reconstruction of sea-surface temperatures in the Canary Islands during Marine Isotope Stage 11

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