Permafrost changes in Europe during the last glacial

Vandenberghe, Jef; Pissart, Albert

doi:10.1002/ppp.3430040205

Cited by 165 publications

(119 citation statements)

References 30 publications

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“…The potential of the 'periglacial approach' to palaeoclimatic reconstruction is now well established (e.g. Vandenberghe and Pissart, 1993;Isarin, 1997).…”

Section: Lines Of Evidencementioning

confidence: 99%

Quantitative reconstructions of palaeoclimates during the last interglacial–glacial in western and central Europe: an introduction

1998

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“…The potential of the 'periglacial approach' to palaeoclimatic reconstruction is now well established (e.g. Vandenberghe and Pissart, 1993;Isarin, 1997).…”

Section: Lines Of Evidencementioning

confidence: 99%

Quantitative reconstructions of palaeoclimates during the last interglacial–glacial in western and central Europe: an introduction

1998

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“…4 • C in the north but as high as 8 • C in the south. The climatic conditions were extremely continental at this time, with an annual temperature amplitude of around 28 to 33 • C (Vandenberghe and Pissart 1993;Huijzer and Vandenberghe 1998). Conditions were also very dry in many districts, especially towards the end of MIS-2, as extensive belts of loess and sand dominated the landscape.…”

Section: The Periglaciated Zone Of Mid-latitude Europementioning

confidence: 86%

Climate Variability in Europe and Africa: a PAGES-PEP III Time Stream II Synthesis

Partridge

Lowe

Barker

et al. 2004

Past Climate Variability Through Europe and Africa

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“…Identically labelled stadials follow interstadials. Permafrost of periods (thick lines = continuous, thin lines = discontinuous, dash lines = assumed) in Middle Europe after Liedtke (1993) and Vandenberghe and Pissart (1993) -see also the newer review by Vandenberghe et al (2014). Main distribution of coarse grained cryogenic calcites according to Žák et al (2012) and Richter et al (2018).…”

Section: Discussionmentioning

confidence: 99%

Unusual internal structure of cm-sized coldwater calcite: Weichselian spars in former pools of the Zinnbergschacht Cave (Franconian Alb/SE Germany)

Richter¹,

Neuser²,

Harder³

et al. 2018

IJS

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Abstract:The investigation of the internal structure of calcite crystals is a new focus in speleothem science, especially in the range of crystallization temperatures close to 0°C. Recently found calcite spars from Zinnbergschacht Cave of the Franconian Alb (SE Germany) are ideal for multi-method investigation. The elongated calcites (up to 6 cm in length) with three to six lateral faces and basal triangular faces at the ends are observed in collapse-zones in the cave. 230 Th/U-ages of 38.9 ka suggest formation during the periglacial Weichselian, between the Scandinavian and Alpine Glaciations. The δ 18 O and δ 13 C values of the calcite spars vary from -11.18 to -16.11‰ V-PDB and from -4.78 to -6.13‰ V-PDB, respectively. The exceptionally low δ18 O values of these calcites appear to be due to precipitation in pools on ice. The values deviate considerably from those of conventional interglacial speleothems (δ 18 O = -7.21 to -7.55‰, δ 13 C = -9.77 to -10.86‰) and also from true Weichselian cryogenic calcites (composite spherulites and rhombohedral chains with δ 18 O = -15.06 to -18.04‰ and with δ 13 C = -3.52 to -4.13‰). The δ 18 O values of the latter calcites is typical of cryogenesis of calcites with extensive oxygen isotope fractionation (preferred incorporation of 18 O into the co-occurring ice). Thus, the δ 18 O values of the calcites suggest cold conditions up to the beginning of cryogenesis. Cathodoluminescence (CL) and backscattered electrons (BSE) indicate the distribution of impurities within the calcite spars as pigmented triangles surrounded by clear calcite, with a higher density of the triangles in the outer areas. Three hierarchies of triangles can be distinguished by BSE, documenting a filigreed primary structure of the spars. Electron backscatter diffraction (EBSD) reveals a divergent orientation of the triangular subcrystals from the center to the outer corners of the calcites. Thus, their internal structure reflects an example of fascicular optic fibrous calcites (FOFC), frequently discussed in carbonate petrology.Weichselian, cryogenic calcites, fascicular optic fibrous calcite, electron backscatter diffraction, Franconian Alb

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Permafrost changes in Europe during the last glacial

Cited by 165 publications

References 30 publications

Quantitative reconstructions of palaeoclimates during the last interglacial–glacial in western and central Europe: an introduction

Quantitative reconstructions of palaeoclimates during the last interglacial–glacial in western and central Europe: an introduction

Climate Variability in Europe and Africa: a PAGES-PEP III Time Stream II Synthesis

Unusual internal structure of cm-sized coldwater calcite: Weichselian spars in former pools of the Zinnbergschacht Cave (Franconian Alb/SE Germany)

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