Aminostratigraphy of UK Pleistocene deposits

Miller, Gifford H.; Hollin, John T.; Andrews, John T.

doi:10.1038/281539a0

Cited by 93 publications

(58 citation statements)

References 17 publications

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“…It should be kept in mind, however, that the reaction rates are very slow when the alle/lle ratios are higher than 0.3 to0.4 (Muller, 1984;jansen and Sejrup, 1986). By comparing the ratios obtained on Mya and Macoma from lithozones E3 to C with those reported by Miller et al (1979) from the Crag Series of southeastern England (alle/lle ratios between 0.86 and 1.20), it is evident that our lithozones are somewhat younger than these sequences. This interpretation is based upon the reasoning that while the geothermal gradient in the more deeply buried sediments in 81/26 may have increased the relative rates of epimerisation, the ratios in that core are still lower (hence younger) than ratios from the Crag sequences.…”

Section: Lithozone Dmentioning

confidence: 99%

Quaternary stratigraphy of the fladen area, central North Sea: A multidisciplinary study

Sejrup¹,

Aarseth²,

Ellingsen³

et al. 1987

J Quaternary Science

157

121

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Based on detailed stratigraphic investigations on a 200.6m long core (BGS borehole No. 81/26) from the Fladen Ground area (British sector), core material from the Sleipner field (Norwegian sector) and shallow seismic profiles between the core-sites, the following conclusions are drawn: (1) The North Sea was glaciated sometime during the later part of Matuyama reversed period. A complete glacial-interglacial-glacial cycle is recorded in these sediments.(2) In a period of marine sedimentation in the Middle Pleistocene, a transgression-regression cycle under boreal-arctic regime i s recorded. (3) The Fladen area has subsided between 0.9 and 0.6m/ka through the later parts of the Quaternary. (4) A major glacial event dated at between 130 and 200 ka is recorded as a thick till unit in 81/26. This till, which was deposited by ice moving from the southwest (Scotland), probably represents a period when the Scandinavian and British ice sheets coalesced in the North Sea. (5) Based on the seismic data and the stratigraphy of the Sleipner core, an ice-free, open embaymenudry land is favoured for the central North Sea during the Late Weichselian. (6) From the amino-acid data, it is shown that there has been an episodic style of sedimentation through the Quaternary. (7) Of the investigated sediments (which span the last 1 mill. year) ca 98% have been deposited under arctic to boreal-arctic conditions. Journal of Quaternary Science

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Section: Lithozone Dmentioning

confidence: 99%

Quaternary stratigraphy of the fladen area, central North Sea: A multidisciplinary study

Sejrup¹,

Aarseth²,

Ellingsen³

et al. 1987

J Quaternary Science

157

121

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“…Fossil molluscan remains have provided raw material for an innovative dating technique based on post-mortem protein degradation in shell, applied in pioneering studies in NW Europe from the late 1970s onwards Miller et al, 1979;Miller and Mangerud, 1985;Bowen et al, 1989). The results on thin-shelled gastropods included a very small number of problematic outliers (e.g.…”

Section: Underpinning By Amino Acid Racemization Datingmentioning

confidence: 99%

Well-dated fluvial sequences as templates for patterns of handaxe distribution: Understanding the record of Acheulean activity in the Thames and its correlatives

White

Bridgland

Schreve

et al. 2018

Quaternary International

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“…In the UK, D-Aile/L-Ile was first used for aquatic bivalves (Miller et al, 1979) and marine gastropods Bowen et al, 1985). DL ratios from terrestrial gastropods, when calibrated by independent means, showed four interglacial events postdating the Anglian glaciation and which were correlated with marine isotope stages 11 (Swanscombe), 9 (Purfleet), 7 (Aveley) and 5e (Trafalgar Square) (Bowen et al, 1989).…”

Section: Aminostratigraphy and Amino Acid Geochronologymentioning

confidence: 99%

Middle and Late Pleistocene environmental history of the Marsworth area, south-central England

Murton

Bowen

Candy

et al. 2015

Proceedings of the Geologists' Association

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A B S T R A C TTo elucidate the Middle and Late Pleistocene environmental history of south-central England, we report the stratigraphy, sedimentology, palaeoecology and geochronology of some deposits near the foot of the Chiltern Hills scarp at Marsworth, Buckinghamshire. The Marsworth site is important because its sedimentary sequences contain a rich record of warm stages and cold stages, and it lies close to the Anglian glacial limit. Critical to its history are the origin and age of a brown pebbly silty clay (diamicton) previously interpreted as weathered till.The deposits described infill a river channel incised into chalk bedrock. They comprise clayey, silty and gravelly sediments, many containing locally derived chalk and some with molluscan, ostracod and vertebrate remains. Most of the deposits are readily attributed to periglacial and fluvial processes, and some are dated by optically stimulated luminescence to Marine Isotope Stage (MIS) 6. Although our sedimentological data do not discriminate between a glacial or periglacial interpretation of the diamicton, amino-acid dating of three molluscan taxa from beneath it indicates that it is younger than MIS 9 and older than MIS 5e. This makes a glacial interpretation unlikely, and we interpret the diamicton as a periglacial slope deposit.The Pleistocene history reconstructed for Marsworth identifies four key elements: (1) Anglian glaciation during MIS 12 closely approached Marsworth, introducing far-travelled pebbles such as Rhaxella chert and possibly some fine sand minerals into the area. (2) Interglacial environments inferred from fluvial sediments during MIS 7 varied from fully interglacial conditions during sub-stages 7e and 7c, cool temperate conditions during sub-stage 7b or 7a, temperate conditions similar to those today in central England towards the end of the interglacial, and cool temperate conditions during sub-stage 7a. (3) Periglacial activity during MIS 6 involved thermal contraction cracking, permafrost development, fracturing of chalk bedrock, fluvial activity, slopewash, mass movement and deposition of loess and coversand. (4) Fully interglacial conditions during sub-stage 5e led to renewed fluvial activity, soil formation and acidic weathering.

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Aminostratigraphy of UK Pleistocene deposits

Cited by 93 publications

References 17 publications

Quaternary stratigraphy of the fladen area, central North Sea: A multidisciplinary study

Quaternary stratigraphy of the fladen area, central North Sea: A multidisciplinary study

Well-dated fluvial sequences as templates for patterns of handaxe distribution: Understanding the record of Acheulean activity in the Thames and its correlatives

Middle and Late Pleistocene environmental history of the Marsworth area, south-central England

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