Robert E M Hedges
Biographic Data
| ID | 87621 |
|---|---|
| NAME | Robert E M Hedges |
| GIVEN NAMES | Robert E M |
| FAMILY NAME | Hedges |
| SIGNATURE | HEDGES R E M |
| AFFILIATIONS | University of Oxford |
| VERIFIED | No |
| TOTAL WORKS | 47 |
| TOTAL CITATIONS | 1827 |
| AUTHOR COUNT | 47 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1980 |
| LATEST PUBLICATION YEAR | 2013 |
| H-INDEX | 17 |
Investigating Dietary Variation With Burial Ritual in I ron A ge H ampshire: An Isotopic Comparison of S uddern F arm Cemetery and D anebury Hillfort Pit Burials
The formal I ron A ge cemetery at S uddern F arm, located near D anebury hillfort, provides a unique opportunity to investigate whether differences in burial tradition and ritual behaviour seen at the two sites are linked to access to food resources during life. We measured the carbon and nitrogen isotopic ratios of 40 humans from S uddern F arm and compared this information to previously published faunal data from the site and human isotopic dat…
Hydroxyproline Dating: Experiments on the 14 C Analysis of Contaminated and Low-Collagen Bones
Dating of the amino acid hydroxyproline from bone collagen has been shown to produce accurate and reliable radiocarbon dates. This article presents further application of the method demonstrating it can be used to obtain dates for both low-collagen and contaminated bones, extending the capability of 14 C dating archaeological bone from conventional limits imposed by alternative pretreatment methods. The method therefore has the potential for sign…
One for the master and one for the dame: Stable isotope investigations of Iron Age animal husbandry in the Danebury Environs
Community differentiation and kinship among Europe’s first farmers
Community differentiation is a fundamental topic of the social sciences, and its prehistoric origins in Europe are typically assumed to lie among the complex, densely populated societies that developed millennia after their Neolithic predecessors. Here we present the earliest, statistically significant evidence for such differentiation among the first farmers of Neolithic Europe. By using strontium isotopic data from more than 300 early Neolithic…
Single amino acid radiocarbon dating of Upper Paleolithic modern humans
Archaeological bones are usually dated by radiocarbon measurement of extracted collagen. However, low collagen content, contamination from the burial environment, or museum conservation work, such as addition of glues, preservatives, and fumigants to “protect” archaeological materials, have previously led to inaccurate dates. These inaccuracies in turn frustrate the development of archaeological chronologies and, in the Paleolithic, blur the dati…
Variation of bone collagen amino acid δ 13 c values in archaeological humans and fauna with different dietary regimes: Developing frameworks of dietary discrimination
We present bone collagen amino acid (AA) δ 13 C values for a range of archaeological samples representing four “benchmark” human diet groups (high marine protein consumers, high freshwater protein consumers, terrestrial C 3 consumers, and terrestrial C 4 consumers), a human population with an “unknown” diet, and ruminants. The aim is to establish an interpretive palaeodietary framework for bone collagen AA δ 13 C values, and to assess the extent …
Diet, social differentiation and cultural change in Roman Britain: New isotopic evidence from Gloucestershire
Palaeodiet at Eton College Rowing Course, Buckinghamshire: Isotopic changes in human diet in the Neolithic, Bronze Age, Iron Age and Roman periods throughout the British Isles
Diagenesis in bone and enamel apatite carbonate; the potential of density separation to assess the original composition
Using stable isotope analysis to examine the effect of economic change on breastfeeding practices in Spitalfields, London, UK
Breastfeeding patterns were subject to a number of fads in 18th and 19th century Britain. Feeding infants by hand, rather than maternal breastfeeding or wet-nursing, became more prevalent among both the wealthy and poor. Substitute foods may have been a convenient alternative for mothers employed away from the household. This study used stable isotope ratio analysis to examine the weaning schedule in the 18th and 19th century skeletal assemblage …
Stable Isotope Investigations of the Danebury Hillfort Pit Burials: Stable Isotope Investigations of the Danebury Hillfort Pit Burials
Carbon and nitrogen isotope analyses were performed on human and animal bones recovered from pits within Danebury Iron Age hillfort. All results are within the range expected for European Holocene specimens and are similar to those from other Iron Age sites in central southern Britain. Our results indicate that the human diet included a significant amount of animal protein (meat and/or dairy products) consumed on a regular basis, but do not precl…
Radiocarbon Dating of Individual Amino Acids from Archaeological Bone Collagen
Since the development of accelerator mass spectrometry (AMS) for radiocarbon dating in the late 1970s, its ability to date small samples of bone has been of huge importance in archaeology and Quaternary paleoecology. The conventional approach to sample preparation has been to extract and gelatinize protein, which is then combusted and graphitized for analysis. However, this “bulk protein” can contain a heterogeneous mixture of non-collagenous mol…
Improved AMS 14 C Dating of Shell Carbonates Using High-Precision X-Ray Diffraction and a Novel Density Separation Protocol (Cards)
One critical variable in the successful application of radiocarbon dating is the effective removal of carbonaceous contaminants. In the case of marine carbonates, contamination appears usually in the form of secondary low-magnesium calcite, the stable polymorph of calcium carbonate and byproduct of the post-mortem recrystallization or replacement of the autochthonous phase, originally in the form of high-magnesium calcite or aragonite. Depending …
A Nondestructive Prescreening Method for Bone Collagen Content Using Micro-Computed Tomography
Isolation of bone collagen for radiocarbon dating is a labor-intensive and time-consuming process that sometimes results in unacceptably low protein recovery. In preliminary studies reported here, micro-computed tomography (microCT), a nondestructive technique that uses X-rays to produce high-resolution three-dimensional images of mineralized materials such as bone, offers promise as a suitable prescreening option for bones of questionable preser…
An Investigation Into Diet at the Site of Yarnton, Oxfordshire, Using Stable Carbon and Nitrogen Isotopes
This paper reports the results of stable isotopic analyses conducted upon animal and human bones recovered from Yarnton, Oxfordshire. Spanning the Neolithic to Saxon periods, it is in many ways a typical site, but is unusual in that a small Middle Iron Age cemetery was discovered. All of the data presented here lie within the expected isotopic ranges for the European Holocene, although both faunal and animal δ 15 N values are higher than is commo…
Trans‐Atlantic slavery: Isotopic evidence for forced migration to Barbados
The question of the ultimate origin of African slaves is one of the most perplexing in the history of trans‐Atlantic slavery. Here we present the results of a small, preliminary isotopic study that was conducted in order to determine the geographical origin of 25 enslaved Africans who were buried at the Newton plantation, Barbados, sometime between the late 17th and early 19th century. In order to gain a more nuanced understanding of the slaves' …
Radiocarbon and stable isotope investigations at the Central Rhineland sites of Gönnersdorf and Andernach-Martinsberg, Germany
Rooting for pigfruit: Pig feeding in Neolithic and Iron Age Britain compared
They dream of the acorned swill of the world, the rooting for pigfruit...' Dylan Thomas, Under Milk Wood.Carbon and nitrogen isotopes show a marked change in the diet of British pigs between the Neolithic and the Iron Age. The authors neatly deduce that this was due to the loss of the Neolithic wildwood where pigs were wont to root for fungus amongst the rotting trees
Fossil dogs and wolves from Palaeolithic sites in Belgium, the Ukraine and Russia: Osteometry, ancient DNA and stable isotopes
Where the wild things are: Aurochs and cattle in England
The aurochs was a type of wild cattle not extinct in Europe until the mid-second millennium BC - so they must have co-existed for centuries with the domestic cattle which were to supplant it. Here the authors use stable isotope analysis to show what form that co-existence took: the domestic cattle grazing on the pasture, and the aurochs lurking in the forests and wet places
Collagen turnover in the adult femoral mid‐shaft: Modeled from anthropogenic radiocarbon tracer measurements
We have measured the 14 C content of human femoral mid‐shaft collagen to determine the dynamics of adult collagen turnover, using the sudden doubling and subsequent slow relaxation of global atmospheric 14 C content due to nuclear bomb testing in the 1960s and 1970s as a tracer. 14 C measurements were made on bone collagen from 67 individuals of both sexes who died in Australia in 1990‐1993, spanning a range of ages at death from 40 to 97, and th…
Predicting diet, trophic level and palaeoecology from bone stable isotope analysis: A comparative study of five red deer populations
The distinction between freshwater- and terrestrial-based diets: Methodological concerns and archaeological applications of sulphur stable isotope analysis
Nitrogen isotopes and the trophic level of humans in archaeology
Nitrogen balance and δ 15 N: Why you're not what you eat during nutritional stress
While past experiments on animals, birds, fish, and insects have shown changes in stable isotope ratios due to nutritional stress, there has been little research on this topic in humans. To address this issue, a small pilot study was conducted. Hair samples from eight pregnant women who experienced nutritional stress associated with the nausea and vomiting of morning sickness (hyperemesis gravidarum) were measured for carbon ( δ 13 C) and nitroge…
Nitrogen isotopes and the trophic level of humans in archaeology
Collagen turnover in the adult femoral mid‐shaft: Modeled from anthropogenic radiocarbon tracer measurements
We have measured the 14 C content of human femoral mid‐shaft collagen to determine the dynamics of adult collagen turnover, using the sudden doubling and subsequent slow relaxation of global atmospheric 14 C content due to nuclear bomb testing in the 1960s and 1970s as a tracer. 14 C measurements were made on bone collagen from 67 individuals of both sexes who died in Australia in 1990‐1993, spanning a range of ages at death from 40 to 97, and th…
Patterns of Diagenesis in Bone I: The Effects of Site Environments
Measurements and Relationships of Diagenetic Alteration of Bone from Three Archaeological Sites
Bones and Groundwater: Towards the Modelling of Diagenetic Processes
The distinction between freshwater- and terrestrial-based diets: Methodological concerns and archaeological applications of sulphur stable isotope analysis
Experiments on Collagen-Humic Interactions: Speed of Humic Uptake, and Effects of Diverse Chemical Treatments
Fossil dogs and wolves from Palaeolithic sites in Belgium, the Ukraine and Russia: Osteometry, ancient DNA and stable isotopes
Using stable isotope analysis to examine the effect of economic change on breastfeeding practices in Spitalfields, London, UK
Breastfeeding patterns were subject to a number of fads in 18th and 19th century Britain. Feeding infants by hand, rather than maternal breastfeeding or wet-nursing, became more prevalent among both the wealthy and poor. Substitute foods may have been a convenient alternative for mothers employed away from the household. This study used stable isotope ratio analysis to examine the weaning schedule in the 18th and 19th century skeletal assemblage …
Patterns of Diagenesis in Bone II: Effects of Acetic Acid Treatment and the Removal of Diagenetic CO32
Trans‐Atlantic slavery: Isotopic evidence for forced migration to Barbados
The question of the ultimate origin of African slaves is one of the most perplexing in the history of trans‐Atlantic slavery. Here we present the results of a small, preliminary isotopic study that was conducted in order to determine the geographical origin of 25 enslaved Africans who were buried at the Newton plantation, Barbados, sometime between the late 17th and early 19th century. In order to gain a more nuanced understanding of the slaves' …
Improved AMS 14 C Dating of Shell Carbonates Using High-Precision X-Ray Diffraction and a Novel Density Separation Protocol (Cards)
One critical variable in the successful application of radiocarbon dating is the effective removal of carbonaceous contaminants. In the case of marine carbonates, contamination appears usually in the form of secondary low-magnesium calcite, the stable polymorph of calcium carbonate and byproduct of the post-mortem recrystallization or replacement of the autochthonous phase, originally in the form of high-magnesium calcite or aragonite. Depending …
One for the master and one for the dame: Stable isotope investigations of Iron Age animal husbandry in the Danebury Environs
Radiocarbon and stable isotope investigations at the Central Rhineland sites of Gönnersdorf and Andernach-Martinsberg, Germany
Diet, social differentiation and cultural change in Roman Britain: New isotopic evidence from Gloucestershire
Rooting for pigfruit: Pig feeding in Neolithic and Iron Age Britain compared
They dream of the acorned swill of the world, the rooting for pigfruit...' Dylan Thomas, Under Milk Wood.Carbon and nitrogen isotopes show a marked change in the diet of British pigs between the Neolithic and the Iron Age. The authors neatly deduce that this was due to the loss of the Neolithic wildwood where pigs were wont to root for fungus amongst the rotting trees
Radiocarbon Dating of Individual Amino Acids from Archaeological Bone Collagen
Since the development of accelerator mass spectrometry (AMS) for radiocarbon dating in the late 1970s, its ability to date small samples of bone has been of huge importance in archaeology and Quaternary paleoecology. The conventional approach to sample preparation has been to extract and gelatinize protein, which is then combusted and graphitized for analysis. However, this “bulk protein” can contain a heterogeneous mixture of non-collagenous mol…
Preliminary Results for the Analysis of Lipids in Ancient Bone
The Role of the Environment in Uranium Uptake by Buried Bone
An Investigation Into Diet at the Site of Yarnton, Oxfordshire, Using Stable Carbon and Nitrogen Isotopes
This paper reports the results of stable isotopic analyses conducted upon animal and human bones recovered from Yarnton, Oxfordshire. Spanning the Neolithic to Saxon periods, it is in many ways a typical site, but is unusual in that a small Middle Iron Age cemetery was discovered. All of the data presented here lie within the expected isotopic ranges for the European Holocene, although both faunal and animal δ 15 N values are higher than is commo…
Diagenesis in bone and enamel apatite carbonate; the potential of density separation to assess the original composition
Stable Isotope Investigations of the Danebury Hillfort Pit Burials: Stable Isotope Investigations of the Danebury Hillfort Pit Burials
Carbon and nitrogen isotope analyses were performed on human and animal bones recovered from pits within Danebury Iron Age hillfort. All results are within the range expected for European Holocene specimens and are similar to those from other Iron Age sites in central southern Britain. Our results indicate that the human diet included a significant amount of animal protein (meat and/or dairy products) consumed on a regular basis, but do not precl…
Radiocarbon Dating of Sediments
In 14 C dating of sediment, the date of deposition is associated with its C age. Most sediments are complex mixtures containing little organic material frequently derived from several sources. The most conspicuous sources of error result from 1) the incorporation of “fossil” carbon (eg, graphite, lignite, etc) into a more recent sediment. This is particularly important in low carbon sediments (Olsson, 1972); 2) the incorporation of older, ‘rework…
Sample Chemistry for the Oxford High Energy Mass Spectrometer
Chemical pretreatment procedures for the decontamination, extraction, and isolation of organic materials for 14 C dating using the Oxford accelerator system are described. Specific details are given for the isolation and chromatographic purification of amino acids from bone and tooth collagen, of lipids from sediments, and of cellulose and glucose from wood, paper, and textiles. A description is also given of the apparatus used for the routine pr…
Variation of bone collagen amino acid δ 13 c values in archaeological humans and fauna with different dietary regimes: Developing frameworks of dietary discrimination
We present bone collagen amino acid (AA) δ 13 C values for a range of archaeological samples representing four “benchmark” human diet groups (high marine protein consumers, high freshwater protein consumers, terrestrial C 3 consumers, and terrestrial C 4 consumers), a human population with an “unknown” diet, and ruminants. The aim is to establish an interpretive palaeodietary framework for bone collagen AA δ 13 C values, and to assess the extent …
Physical Science and Archaeology
Archaeometry, the area of co-operation between physical scientist and archaeologist, is at present enjoying a nourishing period. The particular form that this growth has taken is seen to result from the inherently different natures of the two disciplines. Metaphors are developed for these two so that their relationships can be explored, and enabling the special character of archaeometry to be understood. A detailed account of archaeometric work i…
Sample Chemistry for the Oxford High Energy Mass Spectrometer
Chemical pretreatment procedures for the decontamination, extraction, and isolation of organic materials for 14 C dating using the Oxford accelerator system are described. Specific details are given for the isolation and chromatographic purification of amino acids from bone and tooth collagen, of lipids from sediments, and of cellulose and glucose from wood, paper, and textiles. A description is also given of the apparatus used for the routine pr…
Radiocarbon Dating of Sediments
In 14 C dating of sediment, the date of deposition is associated with its C age. Most sediments are complex mixtures containing little organic material frequently derived from several sources. The most conspicuous sources of error result from 1) the incorporation of “fossil” carbon (eg, graphite, lignite, etc) into a more recent sediment. This is particularly important in low carbon sediments (Olsson, 1972); 2) the incorporation of older, ‘rework…
Radiocarbon dates from the chambered tomb at Hazleton (Glos.): A chronology for neolithic collective burial
The social organization of prehistoric British societies has been a busy interest recently, with the hypothesis that the Neolithic was characterized by lineage societies, very likely egalitarian in character, whose dead were placed into communal ‘tombs for the ancestors’. But how secure is the evidence for burial in chambered or unchambered long barrows over many generations? Hazleton provides the key example, for it is the first neolithic burial…
Experiments on 14 C Dating of Contaminated Bone Using Peptides Resulting from Enzymatic Cleavage of Collagen
We describe the use of collagenase to digest ancient collagen samples to obtain a peptide mixture, and the use of reversed-phase chromatography to purify these peptides. The isolation of the tripeptides glycine-proline-hydroxyproline and glycine-proline-alanine is especially encouraging
Bond 13 C/ 12 C ratios reflect (palaeo‐)climatic variations
Stable isotope ratios of hydrogen, oxygen, nitrogen and carbon can serve as (palaeo‐) environmental indicators [eg, Ramesh et al., 1986]. 2 H and 18 O have the clearest relationship with precipitation and temperature, while the sensitivity of carbon is thought to be far less pronounced, and understanding is not complete. Carbon isotopic variation in ecosystems is mainly due to photosynthesis in plants, and passed on in the foodweb without much ov…
Preliminary Results for the Analysis of Lipids in Ancient Bone
The Role of the Environment in Uranium Uptake by Buried Bone
Bones and Groundwater: Towards the Modelling of Diagenetic Processes
Measurements and Relationships of Diagenetic Alteration of Bone from Three Archaeological Sites
Experiments on Collagen-Humic Interactions: Speed of Humic Uptake, and Effects of Diverse Chemical Treatments
Biochemically and Immunologically Active Alkaline Phosphatase in Archaeologically Important Bone Samples
The Seaweed Fly (Hal.) (Diptera: (Sphaerocidae) in Inland Archaeological Contexts: δ13C and δ15N Solves the Puzzle
Radiocarbon, Calibration, and the Chronology of the Late Minoan IB Phase
Patterns of Diagenesis in Bone II: Effects of Acetic Acid Treatment and the Removal of Diagenetic CO32
Patterns of Diagenesis in Bone I: The Effects of Site Environments
The Future of the Past
From the 17th International Radiocarbon Conference held in Jerusalem, Israel, June 18-23, 2000
New AMS radiocarbon dates for the North Ferriby boats—a contribution to dating prehistoric seafaring in northwestern Europe
A new series of radiocarbon measurements on three sewn-plank boats from North Ferriby, Yorkshire, has provided consistent new dating for these craft, which suggests that the appearance of such boats may fall in the early Bronze Age
Sharp shift in diet at onset of Neolithic
Bone as a stable isotope archive for local climatic information
Carbon and nitrogen stable isotope analysis of northwest European horse bone and tooth collagen, 40,000BP–present: Palaeoclimatic interpretations
Nitrogen balance and δ 15 N: Why you're not what you eat during pregnancy
Carbon ( 13 C/ 12 C) and nitrogen ( 15 N/ 14 N) stable isotope ratios were longitudinally measured in human hair that reflected the period from pre‐conception to delivery in 10 pregnant women. There was no significant change in the δ 13 C results, but all subjects showed a decrease in δ 15 N values (−0.3 to −1.1‰) during gestation. The mechanisms causing this decrease in hair δ 15 N have not been fully elucidated. However, since the δ 15 N values…
Nitrogen balance and δ 15 N: Why you're not what you eat during nutritional stress
While past experiments on animals, birds, fish, and insects have shown changes in stable isotope ratios due to nutritional stress, there has been little research on this topic in humans. To address this issue, a small pilot study was conducted. Hair samples from eight pregnant women who experienced nutritional stress associated with the nausea and vomiting of morning sickness (hyperemesis gravidarum) were measured for carbon ( δ 13 C) and nitroge…
Predicting diet, trophic level and palaeoecology from bone stable isotope analysis: A comparative study of five red deer populations
The distinction between freshwater- and terrestrial-based diets: Methodological concerns and archaeological applications of sulphur stable isotope analysis
Archaeology and ancient environmental studies (36 works) · Biology (25 works) · Geography (23 works) · Isotope Analysis in Ecology (23 works) · Chemistry (22 works) · Archaeology (21 works) · Geology (20 works) · Forensic Anthropology and Bioarchaeology Studies (15 works) · Pleistocene-Era Hominins and Archaeology (14 works) · Radiocarbon dating (14 works)