Climate variations in Europe over the past 140 kyr deduced from rock magnetism

Thouveny, Nicolas; Beaulieu, Jacques‐Louis de; Bonifay, Eugène; Creer, K. M.; Guiot, Joël; Icole, Michel; Johnsen, S. J.; Jouzel, Jean; Reille, Maurice; Williams, Trevor; Williamson, David

doi:10.1038/371503a0

Cited by 308 publications

(101 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…MS measurements have proved to be a useful guide for the detection of environmental changes (Thouveny et al, 1994;Stockhausen and Zolitschka, 1999). Erosion, soil processes in the catchment area and lake productivity can result in different assemblages of magnetic minerals in lake sediment sequences.…”

Section: Magnetic Susceptibility Measurementsmentioning

confidence: 99%

Environmental and climatic changes in the Jura mountains (eastern France) during the Lateglacial–Holocene transition: a multi-proxy record from Lake Lautrey

Magny

Aalbersberg

Bégeot

et al. 2006

Quaternary Science Reviews

View full text Add to dashboard Cite

This paper presents a multi-proxy reconstruction of the climatic and environmental changes during the Last Glacial-Interglacial transition as recorded by a sediment sequence from Lake Lautrey (Jura, eastern France). This reconstruction is based on analysis of pollen, chironomid, organic matter, oxygen-isotope, mineralogical, magnetic susceptibility and inferred lake-level data at a high temporal resolution. The chronology is derived using AMS radiocarbon dates, the position of the Laacher See Tephra (LST), and of correlation between the Lautrey and GRIP oxygen-isotope records. This data set reveals a detailed sequence of environmental changes in the Jura mountains from Greenland Stadial 2a to the early Holocene. Biotic and abiotic indicators allow the recognition of major abrupt changes associated with the GS2a/GI-1e, GI-1a/GS-1 and GS-1/Preboreal transitions, and other minor fluctuations related to the cold events GI-1d, GI-1b and the Preboreal oscillation (PBO). They also suggest additional cooling spells at ca 14,550 and 14,350 cal yr BP (Intra-Bølling Cold Periods), at ca 13,500 and ca 12,700 cal yr BP just before the GS-1 onset, and at ca 11,350 cal yr BP just before the PBO, as well as an intriguing brief warming episode within GS-1 at ca 12,080 cal yr BP. Summer temperature increased by ca 5 °C at the start of GI-1e, and by 1.5-3 °C at the Holocene onset, while it decreased by ca 3-4 °C at the beginning of GS-1. Major changes in local hydrology and in seasonality appear to be also associated with the GS-2a/GI1e, GI-1a/GS-1 and GS-1/Preboreal transitions. Pollen and abiotic indicators suggest a greater sensitivity of the vegetation cover to climatic oscillations during the first part of the Lateglacial Interstadial than during the second part (after ca 13,700 cal yr BP), when a closed forest had been restored in this area. By contrast, the restoration of forest cover took less than 300 yr after the end of GS-1. At the beginning of GI-1e and GS-1, no lag occurs (within the sampling resolution of 20-50 yr) in the responses of aquatic (chironomids) and terrestrial (pollen) ecosystems, while, at the onset of the Holocene, the response of the vegetation appears slightly delayed in comparison with that of the chironomid community. Finally, the recognition of two successive tephra layers, which were deposited just before the LST at ca 12,950 cal yr BP and which originated from Le Puy de la Nugère (Massif Central, France), provides an additional tephrochronological tool for correlation between Lateglacial European sequences.

show abstract

Section: Magnetic Susceptibility Measurementsmentioning

confidence: 99%

Environmental and climatic changes in the Jura mountains (eastern France) during the Lateglacial–Holocene transition: a multi-proxy record from Lake Lautrey

Magny

Aalbersberg

Bégeot

et al. 2006

Quaternary Science Reviews

View full text Add to dashboard Cite

show abstract

“…Attention has been paid to rapid climate oscillations during the last deglaciation since the discovery of Heinrich events and Dansgaard-Oeschger cycles (Dansgaard et al, 1993;Heinrich, 1988). Although significant advance has been made based on archives in Greenland ice cores (Stuiver et al, 1995) and North Atlantic marine sediments , reports of these climatic oscillations in continental Europe (Thouveny et al, 1994) and East Asia (Yuan et al, 2004) suggest their global occurrence.…”

Section: Introductionmentioning

confidence: 99%

High-resolution enviromagnetic records of the last deglaciation from Dali Lake, Inner Mongolia

Liu

Deng

Xiao

et al. 2016

Palaeogeography, Palaeoclimatology, Palaeoecology

View full text Add to dashboard Cite

Detailed paleoclimate records during the last deglaciation are highly valuable for understanding rapid climatic changes and mechanisms during extremely variable conditions. High-resolution paleoclimate research in the semi-arid East Asian interior is essential due to its sensitivity to climate variability and importance for human inhabitance. A high-resolution environmental magnetic investigation has been performed on a sedimentary sequence from Dali Lake in central Inner Mongolia, which covers the period of 15.90-11.46 ka. Variable magnetic mineral sources are identified based on integrated rock magnetic analysis of both core sediments and catchment samples, complemented by scanning electron telescope and transmission electron telescope observation and Xray diffraction analysis. The studied core is magnetically divided into four units: Magnetic minerals in Unit 1 (11.83-11.5 m, 15.90-15.32 ka) are mainly sourced from bedrock erosion of basalts in the catchment. This period corresponds to rapid climate fluctuations after the Last Glacial Maximum. In Unit 2 (11.50-9.50 m, 15.32-12.67 ka) and Unit 3 (9.50-8.59 m, 12.67-11.56 ka), pseudo-single domain magnetites from erosion of surface soils are the main magnetic carriers. These two units coincide within time error with the Bølling-Allerød warm period and the Younger Dryas cold period, respectively, and can be correlated with stalagmite and ice core records. Our findings reflect contrasting erosion processes during cold and warm periods in the lake catchment, which were ultimately controlled by climate changes during the last deglaciation.

show abstract

“…Traditionally, the most successful method to detect HL is the use of MS. Only Laurentide material carries a strong magnetic signal, explaining why HL3 and 6, which were attributed a more Icelandic-Fennoscandic origin, do not show up well in the MS record (Grousset et al 1993;Thouveny et al 1994;Snoeckx et al 1999). The closer to the BIIS, the MS signal becomes more attenuated, due to the growing influence of ice-rafted debris derived from Irish Palaeozoic carbonate rocks and chalk fragments (Scourse et al 2000;Richter et al 2001).…”

Section: Ice-rafting Eventsmentioning

confidence: 98%

Quaternary sediment dynamics in the Belgica mound province, Porcupine Seabight: ice-rafting events and contour current processes

Rooij

Blamart

Richter

et al. 2006

Int J Earth Sci (Geol Rundsch)

View full text Add to dashboard Cite

The Belgica cold-water coral banks on the eastern slope of the Porcupine Seabight are closely associated with bottom currents. In order to better understand the local temporal and spatial characteristics, as well as the palaeoclimatologic influences, a 26 m long core, taken on a small contourite drift, was studied. This sediment record of approximately 100 ka BP reveals new insights into the regional glacial and sedimentary processes, which are intrinsically linked to several geological, climatological, biological and hydrodynamic variables. The glacial sequences in the core contain six ice-rafting events (IRE). They are comparable with the North Atlantic Heinrich Events, although their characteristics show dominant influences from the proximal British-Irish Ice Sheet (BIIS). These IRE have a low magnetic susceptibility and are deposited during two or three ice-rafting pulses. The record of ice-rafting suggests a millennial-scaled BIIS destabilisation and confirms the start of a final retreat about 25 ka ago. Additionally, the glacial sequence corresponds to a muddy contourite, influenced by bottom-current strength variations during interstadials, possibly triggered by sporadic reintroductions of Mediterranean Outflow Water in a glacial North Atlantic Ocean. The interglacial sequence features an 11-m thick deep-water massive sand unit, probably deposited under a highenergy bottom-current regime.

show abstract

Climate variations in Europe over the past 140 kyr deduced from rock magnetism

Cited by 308 publications

References 25 publications

Environmental and climatic changes in the Jura mountains (eastern France) during the Lateglacial–Holocene transition: a multi-proxy record from Lake Lautrey

Environmental and climatic changes in the Jura mountains (eastern France) during the Lateglacial–Holocene transition: a multi-proxy record from Lake Lautrey

High-resolution enviromagnetic records of the last deglaciation from Dali Lake, Inner Mongolia

Quaternary sediment dynamics in the Belgica mound province, Porcupine Seabight: ice-rafting events and contour current processes

Contact Info

Product

Resources

About