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New evidence for complex climate change in MIS 11 from Hoxne, Suffolk, UK.

Ashton N, Lewis SG, Parfitt SA, Penkman KE, Russell Coope G - Quat Sci Rev (2008)

Bottom Line: The later temperate phase was deposited during an episode of boreal woodland and is associated with the artefacts, a diverse vertebrate fauna and molluscs.New amino acid geochronological data and biostratigraphical considerations suggest that the post-Hoxnian sequence correlates with late substages of MIS 11.The paper further investigates the correlation of the sequence at Hoxne with the palynological sequences found elsewhere in Europe and adjacent offshore areas.

View Article: PubMed Central - PubMed

Affiliation: Department of Prehistory and Europe, British Museum, Franks House, 56 Orsman Road, London N1 5QJ, UK.

ABSTRACT
The climatic signal of Marine Isotope Stage (MIS) 11 is well-documented in marine and ice-sheet isotopic records and is known to comprise at least two major warm episodes with an intervening cool phase. Terrestrial records of MIS 11, though of high resolution, are often fragmentary and their chronology is poorly constrained. However, some notable exceptions include sequences from the maar lakes in France and Tenaghi Philippon in Greece. In the UK, the Hoxnian Interglacial has been considered to correlate with MIS 11. New investigations at Hoxne (Suffolk) provide an opportunity to re-evaluate the terrestrial record of MIS 11. At Hoxne, the type Hoxnian Interglacial sediments are overlain by a post-Hoxnian cold-temperate sequence. The interglacial sediments and the later temperate phase are separated by the so-called 'Arctic Bed' from which cold-climate macroscopic plant and beetle remains have been recovered. The later temperate phase was deposited during an episode of boreal woodland and is associated with the artefacts, a diverse vertebrate fauna and molluscs. New amino acid geochronological data and biostratigraphical considerations suggest that the post-Hoxnian sequence correlates with late substages of MIS 11. The paper further investigates the correlation of the sequence at Hoxne with the palynological sequences found elsewhere in Europe and adjacent offshore areas.

No MeSH data available.


Related in: MedlinePlus

Correlation of MIS 11 sites across Eurasia with the Antarctic icecore based on data derived from EPICA Communitymembers (2004), Desprat et al.(2005), Reille and de Beaulieu(1995), West(1956), Turner(1970), Nitychoruk et al.(2005) and Prokopenko et al.(2001). The arboreal pollen (AP) curves for Velay, Hoxne,Marks Tey and Ossowka do not include pine. The EPICA, MD01–2447, Velay andLake Baikal records are plotted using the timescales published in the originalreports. The AP curves from Hoxne, Marks Tey and Ossowka have been converted toa timescale by correlation with the Velay and MD01–2447 records based onthree tie-points: the rapid increase of AP at the end of the Anglian/Elsterianglaciation; the NAP phase midway through the Hoxnian/Holsteinian Interglacial;and the sudden decrease in AP at the end of the interglacials.
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fig9: Correlation of MIS 11 sites across Eurasia with the Antarctic icecore based on data derived from EPICA Communitymembers (2004), Desprat et al.(2005), Reille and de Beaulieu(1995), West(1956), Turner(1970), Nitychoruk et al.(2005) and Prokopenko et al.(2001). The arboreal pollen (AP) curves for Velay, Hoxne,Marks Tey and Ossowka do not include pine. The EPICA, MD01–2447, Velay andLake Baikal records are plotted using the timescales published in the originalreports. The AP curves from Hoxne, Marks Tey and Ossowka have been converted toa timescale by correlation with the Velay and MD01–2447 records based onthree tie-points: the rapid increase of AP at the end of the Anglian/Elsterianglaciation; the NAP phase midway through the Hoxnian/Holsteinian Interglacial;and the sudden decrease in AP at the end of the interglacials.

Mentions: In Europe, significant advances have been made over the last decade inrelating the vegetational record from long, continuous sequences from sites insouthern Europe to the marine isotope record. Key to this success has been coreMD01–2447, near the northwest coast of the Iberian Peninsular(Fig. 2), where the marine isotoperecord can be directly compared to pollen that reflects vegetational changesinland (Desprat et al., 2005). Thiscore is argued to span the last 426 ka and has been comparedto other continuous or composite palynological sequences from Tenaghi Philipponin Greece, and Velay maar sites (Praclaux, Le Bouchet and Ribains; Fig. 2) in France (Reille and de Beaulieu, 1995; Tzedakis et al., 1997, 2001,2006). All these sequences show a similar pattern of vegetationand climate change with successive interglacial/glacial cycles. These can berelated to records of global climate change from deep-sea cores (Oppo et al., 1998; McManus et al., 1999), ice cores (Petit et al., 1999; EPICA Community Members, 2004) and the changes in thebiogenic silica content in the sequence from Lake Baikal (Prokopenko et al., 2001) (Fig. 9). Absolutedates from the terrestrial sites support these correlations with 40Ar/39Ar dates on trachytictephra in deposits of the third interglacial at Velay (Le Bouchet Interglacial)suggesting an MIS 7 age (de Beaulieu et al.,2001), and palaeomagnetic analyses and U-series dates on thesequence at Tenaghi Philippon providing further tie-points to the marine isotoperecord (Tzedakis et al., 1997,2006).


New evidence for complex climate change in MIS 11 from Hoxne, Suffolk, UK.

Ashton N, Lewis SG, Parfitt SA, Penkman KE, Russell Coope G - Quat Sci Rev (2008)

Correlation of MIS 11 sites across Eurasia with the Antarctic icecore based on data derived from EPICA Communitymembers (2004), Desprat et al.(2005), Reille and de Beaulieu(1995), West(1956), Turner(1970), Nitychoruk et al.(2005) and Prokopenko et al.(2001). The arboreal pollen (AP) curves for Velay, Hoxne,Marks Tey and Ossowka do not include pine. The EPICA, MD01–2447, Velay andLake Baikal records are plotted using the timescales published in the originalreports. The AP curves from Hoxne, Marks Tey and Ossowka have been converted toa timescale by correlation with the Velay and MD01–2447 records based onthree tie-points: the rapid increase of AP at the end of the Anglian/Elsterianglaciation; the NAP phase midway through the Hoxnian/Holsteinian Interglacial;and the sudden decrease in AP at the end of the interglacials.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2748712&req=5

fig9: Correlation of MIS 11 sites across Eurasia with the Antarctic icecore based on data derived from EPICA Communitymembers (2004), Desprat et al.(2005), Reille and de Beaulieu(1995), West(1956), Turner(1970), Nitychoruk et al.(2005) and Prokopenko et al.(2001). The arboreal pollen (AP) curves for Velay, Hoxne,Marks Tey and Ossowka do not include pine. The EPICA, MD01–2447, Velay andLake Baikal records are plotted using the timescales published in the originalreports. The AP curves from Hoxne, Marks Tey and Ossowka have been converted toa timescale by correlation with the Velay and MD01–2447 records based onthree tie-points: the rapid increase of AP at the end of the Anglian/Elsterianglaciation; the NAP phase midway through the Hoxnian/Holsteinian Interglacial;and the sudden decrease in AP at the end of the interglacials.
Mentions: In Europe, significant advances have been made over the last decade inrelating the vegetational record from long, continuous sequences from sites insouthern Europe to the marine isotope record. Key to this success has been coreMD01–2447, near the northwest coast of the Iberian Peninsular(Fig. 2), where the marine isotoperecord can be directly compared to pollen that reflects vegetational changesinland (Desprat et al., 2005). Thiscore is argued to span the last 426 ka and has been comparedto other continuous or composite palynological sequences from Tenaghi Philipponin Greece, and Velay maar sites (Praclaux, Le Bouchet and Ribains; Fig. 2) in France (Reille and de Beaulieu, 1995; Tzedakis et al., 1997, 2001,2006). All these sequences show a similar pattern of vegetationand climate change with successive interglacial/glacial cycles. These can berelated to records of global climate change from deep-sea cores (Oppo et al., 1998; McManus et al., 1999), ice cores (Petit et al., 1999; EPICA Community Members, 2004) and the changes in thebiogenic silica content in the sequence from Lake Baikal (Prokopenko et al., 2001) (Fig. 9). Absolutedates from the terrestrial sites support these correlations with 40Ar/39Ar dates on trachytictephra in deposits of the third interglacial at Velay (Le Bouchet Interglacial)suggesting an MIS 7 age (de Beaulieu et al.,2001), and palaeomagnetic analyses and U-series dates on thesequence at Tenaghi Philippon providing further tie-points to the marine isotoperecord (Tzedakis et al., 1997,2006).

Bottom Line: The later temperate phase was deposited during an episode of boreal woodland and is associated with the artefacts, a diverse vertebrate fauna and molluscs.New amino acid geochronological data and biostratigraphical considerations suggest that the post-Hoxnian sequence correlates with late substages of MIS 11.The paper further investigates the correlation of the sequence at Hoxne with the palynological sequences found elsewhere in Europe and adjacent offshore areas.

View Article: PubMed Central - PubMed

Affiliation: Department of Prehistory and Europe, British Museum, Franks House, 56 Orsman Road, London N1 5QJ, UK.

ABSTRACT
The climatic signal of Marine Isotope Stage (MIS) 11 is well-documented in marine and ice-sheet isotopic records and is known to comprise at least two major warm episodes with an intervening cool phase. Terrestrial records of MIS 11, though of high resolution, are often fragmentary and their chronology is poorly constrained. However, some notable exceptions include sequences from the maar lakes in France and Tenaghi Philippon in Greece. In the UK, the Hoxnian Interglacial has been considered to correlate with MIS 11. New investigations at Hoxne (Suffolk) provide an opportunity to re-evaluate the terrestrial record of MIS 11. At Hoxne, the type Hoxnian Interglacial sediments are overlain by a post-Hoxnian cold-temperate sequence. The interglacial sediments and the later temperate phase are separated by the so-called 'Arctic Bed' from which cold-climate macroscopic plant and beetle remains have been recovered. The later temperate phase was deposited during an episode of boreal woodland and is associated with the artefacts, a diverse vertebrate fauna and molluscs. New amino acid geochronological data and biostratigraphical considerations suggest that the post-Hoxnian sequence correlates with late substages of MIS 11. The paper further investigates the correlation of the sequence at Hoxne with the palynological sequences found elsewhere in Europe and adjacent offshore areas.

No MeSH data available.


Related in: MedlinePlus