Mandy Jay

Iron Age breastfeeding practices in Britain: Isotopic evidence from Wetwang Slack, East Yorkshire

We present here the results of carbon and nitrogen isotopic analysis of bone collagen undertaken on all skeletal remains of infants and young children below the age of 6 years (n = 34) from the internationally important British cemetery site at Wetwang Slack in East Yorkshire (middle Iron Age, ca. 4th to 2nd centuries BC). The aim of the study is to investigate infant diet, with particular reference to breastfeeding and weaning practices, and to compare the data with previously published studies of archaeological populations, particularly in the context of the variation in data patterns to be seen between sites. The skeletal remains from Wetwang Slack form the only prehistoric collection in the UK, prior to the Romano-British period, with sufficient individuals in this age group to make such an isotopic study viable alongside associated adults and older children. The data are compared in detail with published data from two other sites, one from 19th century Canada and the other from Medieval Britain. The results suggest an unusual situation at Wetwang Slack, with neither the nitrogen nor the carbon isotope ratios conforming to expectations when compared with the putative mothers. We discuss how these data compare with the expectation for breastfed infants and we interpret the divergence in this case to be due to restricted breastfeeding and the early introduction of supplementary foods.

Infant mortality and isotopic complexity: New approaches to stress, maternal health, and weaning

OBJECTIVES Studies of the carbon and nitrogen stable isotope ratios (δ(13) C and δ(15) N) of modern tissues with a fast turnover, such as hair and fingernails, have established the relationship between these values in mothers and their infants during breastfeeding and weaning. Using collagen from high-resolution dentine sections of teeth, which form in the perinatal period we investigate the relationship between diet and physiology in this pivotal stage of life. MATERIALS AND METHODS Childhood dentine collagen δ(13) C and δ(15) N profiles were produced from horizontal sections of permanent and deciduous teeth following the direction of development. These were from two 19th-century sites (n = 24) and a small number (n = 5) of prehistoric samples from Great Britain and Ireland. RESULTS These high-resolution data exhibit marked differences between those who survived childhood and those who did not, the former varying little and the latter fluctuating widely. DISCUSSION Breastfeeding and weaning behavior have a significant impact on the morbidity and mortality of infants and the adults they become. In the absence of documentary evidence, archaeological studies of bone collagen of adults and juveniles have been used to infer the prevalence and duration of breastfeeding. These interpretations rely on certain assumptions about the relationship between isotope ratios in the bone collagen of the adult females and the infants who have died. The data from this study suggest a more complex situation than previously proposed and the potential for a new approach to the study of maternal and infant health in past populations.

Who was buried at Stonehenge

Stonehenge continues to surprise us. In this new study of the twentieth-century excavations, together with the precise radiocarbon dating that is now possible, the authors propose that the site started life in the early third millennium cal BC as a cremation cemetery within a circle of upright bluestones. Britains most famous monument may therefore have been founded as the burial place of a leading family, possibly from Wales.

Strategic and Sporadic Marine Consumption at the Onset of the Neolithic: Increasing Temporal Resolution in the Isotope Evidence

Stable isotope analysis has provided crucial new insights into dietary change at the Neolithic transition in north-west Europe, indicating an unexpectedly sudden and radical shift from marine to terrestrial resources in coastal and island locations. Investigations of early Neolithic skeletal material from Sumburgh on Shetland, at the far-flung margins of the Neolithic world, suggest that this general pattern may mask significant subtle detail. Analysis of juvenile dentine reveals the consumption of marine foods on an occasional basis. This suggests that marine foods may have been consumed as a crucial supplementary resource in times of famine, when the newly introduced cereal crops failed to cope with the demanding climate of Shetland. This isotopic evidence is consistent with the presence of marine food debris in contemporary middens. The occasional and contingent nature of marine food consumption underlines how, even on Shetland, the shift from marine to terrestrial diet was a key element in the Neolithic transition.

Breastfeeding and Weaning Behaviour in Archaeological Populations: Evidence from the Isotopic Analysis of Skeletal Materials

Abstract Breastfeeding and weaning behaviour in prehistoric and later populations can be investigated using biomolecular studies of archaeological bones and teeth. This involves the analysis of isotope ratios which are indicative of diet. Nitrogen isotopes have been used for this purpose for some years, but there is increasing evidence to suggest that other chemical elements can be used to refine the interpretation, and that the comparison of dental and bone data can lead to an increased precision in considering weaning chronologies. This paper is intended to give an overview of why understanding infant diet in the past is important, what has been achieved so far in terms of isotope studies, and where the future may lie for this area of research. It is intended to inform about the possibilities at a general level, rather than provide a detailed description of the techniques.

Feeding Stonehenge: Cuisine and consumption at the Late Neolithic site of Durrington Walls

Abstract The discovery of Neolithic houses at Durrington Walls that are contemporary with the main construction phase of Stonehenge raised questions as to their interrelationship. Was Durrington Walls the residence of the builders of Stonehenge? Were the activities there more significant than simply domestic subsistence? Using lipid residue analysis, this paper identifies the preferential use of certain pottery types for the preparation of particular food groups and differential consumption of dairy and meat products between monumental and domestic areas of the site. Supported by the analysis of faunal remains, the results suggest seasonal feasting and perhaps organised culinary unification of a diverse community.

Tooth enamel oxygen “isoscapes” show a high degree of human mobility in prehistoric Britain

A geostatistical model to predict human skeletal oxygen isotope values (δ18Op) in Britain is presented here based on a new dataset of Chalcolithic and Early Bronze Age human teeth. The spatial statistics which underpin this model allow the identification of individuals interpreted as ‘non-local’ to the areas where they were buried (spatial outliers). A marked variation in δ18Op is observed in several areas, including the Stonehenge region, the Peak District, and the Yorkshire Wolds, suggesting a high degree of human mobility. These areas, rich in funerary and ceremonial monuments, may have formed focal points for people, some of whom would have travelled long distances, ultimately being buried there. The dataset and model represent a baseline for future archaeological studies, avoiding the complex conversions from skeletal to water δ18O values–a process known to be problematic.

Beaker people in Britain: migration, mobility and diet

Abstract The appearance of the distinctive ‘Beaker package’ marks an important horizon in British prehistory, but was it associated with immigrants to Britain or with indigenous converts? Analysis of the skeletal remains of 264 individuals from the British Chalcolithic–Early Bronze Age is revealing new information about the diet, migration and mobility of those buried with Beaker pottery and related material. Results indicate a considerable degree of mobility between childhood and death, but mostly within Britain rather than from Europe. Both migration and emulation appear to have had an important role in the adoption and spread of the Beaker package.

British Iron Age chariot burials of the Arras culture: a multi-isotope approach to investigating mobility levels and subsistence practices

Iron Age chariot burials in the UK are rare and restricted in their distribution. Historically it has been suggested that their Arras culture affinities with Continental Europe, particularly with the Paris basin in France, may be indicative of migration. The majority of them are found on chalk and the putative source region is also chalk. This has meant that a study using only strontium isotopes to identify mobile individuals is problematic. Here we present a range of isotope ratio data (strontium, oxygen, carbon, nitrogen and sulphur) for seven chariot burials from Wetwang, Garton Station and Kirkburn. The majority of them are of men and women who were born and lived locally, although the individual from Kirkburn is likely to have spent his childhood elsewhere. They do, however, differ quite subtly from others in the local population, probably in their relationship to a local land-use pattern operating between two distinct biospheres.

Excavations at Upper Largie Quarry, Argyll & Bute, Scotland: new light on the prehistoric ritual landscape of the Kilmartin Glen

Excavations were carried out intermittently between 1982 and 2005, by various excavators, in advance of quarrying activity at Upper Largie, Kilmartin Glen, Argyll & Bute. They revealed abundant evidence of prehistoric activity, dating from the Mesolithic to the Middle Bronze Age, on a fluvioglacial terrace overlooking the rest of the Glen, although some evidence was doubtless destroyed without record during a period of unmonitored quarrying. Several undated features were also discovered. Mesolithic activity is represented by four pits, probably representing a temporary camp; this is the first evidence for Mesolithic activity in the Glen. Activity of definite and presumed Neolithic date includes the construction, and partial burning, of a post-defined cursus. Copper Age activity is marked by an early Beaker grave which matches counterparts in the Netherlands in both design and contents, and raises the question of the origin of its occupant. The terrace was used again as a place of burial during the Early Bronze Age, between the 22nd and the 18th century, and the graves include one, adjacent to the early Beaker grave, containing a unique footed Food Vessel combining Irish and Yorkshire Food Vessel features. At some point/s during the first half of the 2nd millennium bc – the oakbased dates may suffer from ‘old wood’ effect – three monuments were constructed on the terrace: a pit, surrounded by pits or posts, similar in design to the early Beaker grave; a timber circle; and a post row. The latest datable activity consists of a grave, containing cremated bone in a Bucket Urn, the bone being dated to 1410–1210 cal bc; this may well be contemporary with an assemblage of pottery from a colluvium spread. The relationship between this activity and contemporary activities elsewhere in the Glen is discussed.