Limits...
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

Site location and plan. The basin contours (mOD) and limits of thelake are based on West(1956).
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fig3: Site location and plan. The basin contours (mOD) and limits of thelake are based on West(1956).

Mentions: In the 1950s, detailed fieldwork was undertaken by West (1956), who also examined the palynologyof the lake sediments. West argued for important modifications to thestratigraphy offered by Reid. Other than the addition of a cold lacustrinesediment (Stratum F) above the till (now Stratum G), he argued that the lowerpart of Reid's Bed A had been misinterpreted and was in fact decalcifiedBed (now Stratum) E. This implied that the human occupation of the site wasassociated with the lacustrine sediments of the newly defined HoxnianInterglacial, rather than in the later sediments at the site (Figs. 4 and 5). No archaeology wasdiscovered in Stratum E during West's work, other than two flakes fromsections 40 and 100 on the west of the Oakley Park Pit (West, 1956; Fig.3). However, it is clear from re-examination of the sectiondrawings and the heights of the objects in comparison to those found in the1970s and during the recent excavation that they were actually recovered fromsediments overlying Stratum D. West(1956) defined pollen zones at Hoxne, which were subsequentlymodified following work on the more complete sequence at Marks Tey, Essex. TheHoxne lake sediments (Strata E–D) were assigned to pollen zones HoIthrough to HoIIIa, with HoIIIb and HoIV being absent from the sequence(Turner, 1970).


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)

Site location and plan. The basin contours (mOD) and limits of thelake are based on West(1956).
© Copyright Policy
Related In: Results  -  Collection

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

fig3: Site location and plan. The basin contours (mOD) and limits of thelake are based on West(1956).
Mentions: In the 1950s, detailed fieldwork was undertaken by West (1956), who also examined the palynologyof the lake sediments. West argued for important modifications to thestratigraphy offered by Reid. Other than the addition of a cold lacustrinesediment (Stratum F) above the till (now Stratum G), he argued that the lowerpart of Reid's Bed A had been misinterpreted and was in fact decalcifiedBed (now Stratum) E. This implied that the human occupation of the site wasassociated with the lacustrine sediments of the newly defined HoxnianInterglacial, rather than in the later sediments at the site (Figs. 4 and 5). No archaeology wasdiscovered in Stratum E during West's work, other than two flakes fromsections 40 and 100 on the west of the Oakley Park Pit (West, 1956; Fig.3). However, it is clear from re-examination of the sectiondrawings and the heights of the objects in comparison to those found in the1970s and during the recent excavation that they were actually recovered fromsediments overlying Stratum D. West(1956) defined pollen zones at Hoxne, which were subsequentlymodified following work on the more complete sequence at Marks Tey, Essex. TheHoxne lake sediments (Strata E–D) were assigned to pollen zones HoIthrough to HoIIIa, with HoIIIb and HoIV being absent from the sequence(Turner, 1970).

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