The Chemical Environment in a Burial Mound Shortly after Construction—An Archaeological–Pedological Experiment

A number of burial mounds from the South Scandinavian Early Bronze Age have contained iron pan encapsulated, wet mound cores, in which organic material has been extraordinarily well preserved. Chemical analysis of iron pan formations in recently excavated burial mounds from Jutland, Denmark have demonstrated that the iron pans were formed by redox-processes, caused by anaerobic conditions in the core of the mound and possibly influenced or determined by the way the mound was constructed. In 1995 an experimental burial mound was erected at the Historical-Archaeological Research Centre at Lejre in Denmark. The purpose of the experiment was to test and elaborate the theories on the iron pan formation and the mound construction developed on the basis of the previous chemical analysis. Three years after construction the mound was excavated and the iron pan formation and the preservation of organic matter in an oaken log coffin were studied. Anaerobic conditions had developed in the mound core and the contents of the oaken log coffin were found to be well preserved. This paper describes the results of the experiment.     

益门二号墓出土红色粉末的化学与矿物学性质

为了解宝鸡益门二号墓出土的红色粉末的化学组成及作用,使用X射线衍射仪和扫描电子显微镜(SEM)以其配备的能谱仪(EDS),对它们进行了分析研究。结果表明,此红色粉末为纯朱砂。它对墓藏中的尸体和棺木有防虫防腐的作用。     

陕西出土明代漆棺制作工艺及材质研究

为了更好地了解亚浸水漆器的制作工艺及材质,为该类文物修复保护提供科学依据,本工作采用扫描电镜能谱分析、X射线衍射分析、红外光谱分析等技术对出土于陕西长安县明代墓葬一漆棺的制作工艺及主要制作材料进行了分析研究。结果表明,漆棺是按照木胎-纤维-灰层-漆膜-颜料的工序制作的,主要使用材料有麻、粘土类物质、生漆、金及朱砂颜料。漆棺制作工艺及材质与文献记载基本一致,是中国古代漆棺传统工艺制作的典型代表。     

唐杨会墓石棺彩绘颜料的分析研究

为了科学认知出土于陕西省榆林市靖边县的唐杨会墓彩绘颜料,本工作利用拉曼光谱和带能谱仪的扫描电镜对杨会墓石棺上的有代表性的六个彩绘颜料样品进行分析研究。结果表明其绿色为石绿,白色为铅白、黑色为炭黑、褐色为铅丹与密陀僧的混合颜料,红色为朱砂,粉色为铅丹与铅白的混合颜料,含铅颜料保存良好,未发现变色情况。本研究将为相关考古学研究和文物保护提供重要信息。     

Use of Computed Tomography and Three‐Dimensional Virtual Reconstruction for the Examination of a 16th Century Mummified Dog from a North German Peat Bog

The corpse of a well‐preserved dog was recovered from a peat bog in the region of Burlage, Germany, in 1953. The dog, which dates to the 16th century, retained extensive soft tissue and fur on the postcranial body, although the head is skeletonised. Computed tomography was used to determine the extent of the preservation of the soft tissue, to determine sex and age and to attempt to identify trauma, pathology and potential cause of death. The analysis of the CT data indicated that the dog was an immature or adolescent male. Substantial soft tissue was preserved, including some internal organs. The entire skeleton was present, with the exception of the mandible and parts of the paws; all of the bones were flattened and some were distorted because of demineralisation in the peat. Partial disarticulation of the vertebral column was postmortem, although there was no further evidence of trauma or pathology on the skeleton or soft tissue. The cause of death could not be conclusively determined. To the knowledge of the authors, this dog represents the only known example of a complete historical nonhuman bog body with preserved soft tissue. Copyright © 2011 John Wiley & Sons, Ltd.     

Chemical and Microscopic Study of Masonry Mortar in Ancient Pagodas in East China

Ancient mortars played a crucial role in the construction of historical architectures due to their physical and chemical compatibility with traditional building materials such as stones and bricks. Therefore, the analysis and optimization of the ancient mortar formula are significant in the restoration and preservation of historical sites. In this work, 20 mortar samples selected from five ancient stone pagodas in Zhejiang Province, China, were analyzed. The results showed that mud, lime-soil mortar, lime-sand mortar, and lime-gypsum mortar were used as binders in these pagodas. The Ca(OH)₂/aggregate ratio ranging from 0.3 to 2.7 was usually used to prepare lime mortar. Protein and polysaccharide were also found in some samples.     

Microarchaeology of a collective burial: cova des Pas (Minorca)

FTIR and phytolith analyses have been used to understand the exceptional preservation of the organic remains at the burial cave of Cova des Pas (Minorca), and to obtain high-resolution data of the plant remains present in the sediments. The presence of sodium nitrate and gypsum suggests a relatively dry environment that has enabled the preservation of the organic material, and contributed to the natural mummification. The dry conditions also favored phytolith preservation. Grass inflorescence phytoliths are abundant all over the site suggesting that phytolith accumulations might have an anthropogenic origin and are related to the burial ritual.     

Investigation of chemical changes in bone material from South African fossil hominid deposits

The bone fragments of the Australopithecus Africanus from the dolomitic cave in the Cradle of Humankind in South Africa have been studied by the use of several spectral techniques. The aim was to establish their degree of preservation and possibilities of inferring the life conditions from them. X-ray diffraction studies revealed the transformation of the mineral components partially into fluoroapatite form with addition of goethite, birnessite and quartz phases and with surprisingly well preserved collagen remains. Several important chemical elements were detected by using the electron (EPMA) and synchrotron-based X-ray fluorescence (XRF) microprobes. Among them, Sr and Zn were distributed in a way following the distribution of Ca, the main element of the bones. We suspect the immanent crystallographic substitution of Ca in this case in native bone. Iron followed the distribution of Sr but while Sr is distributed in a continuous way in more rigid locations, iron occurs mainly in the edge zones of the bones and in spot-like inclusions inside. Some part of the spots located in a very edge of bone is also filled with Mn and Cu. It suggests that the porosity and fracture of bones plays a more significant role in the localization of Fe, Mn and Cu. They also form a rigid thin layer (100–250 μm) avoiding further penetration. As (as AsO₄³⁻?) distribution pattern is unique and seems to occur in those locations where the concentrations of Sr are small. The conditions for bone penetration as determined from Eh-pH diagrams suggest that is rather impossible to preserve the organic matter in locations of Mn and also that Mn and Fe hardly can meet in the same spots.     

Experimental effects of bone size and temperature on bone diagenesis

In the ground, bone undergoes chemical and physical changes which affect its preservation. This fact has important implications for dating and other analytical procedures involving bone, as well as faunal analysis where differential preservation of bones of different species may affect conclusions regarding the relative significance of an animal to the economy of a given society. The diagenic processes in bone range from minor changes in the bone protein to complete structural and chemical breakdown.Using fresh cow bone, we conducted laboratory experiments which simulate the effect of temperature and bone size on the rate and nature of bone disintegration in archaeological sites. Temperature influences the rate of chemical change, and bone size and density affect the accessibility of the molecular constituents of bone to extrinsic chemical reactions. These findings clarify the importance of two well-known concepts in bone taphonomy. (1) The rate of chemical breakdown in bone tissues is related to the proximity of a given unit of tissue to the bone surface. This means that, in archaeological bone samples, tissue near the surface may be different chemically from tissue away from the surface and great care is necessary in choosing and preparing bone samples for analytical procedures. (2) In general, small bones are not as well preserved as large bones, therefore small animals are likely to be underrepresented in faunal assemblages.     

Natural preservation mechanisms at play in a Bronze Age wooden shovel found in the copper mines of Alderley Edge

A wooden shovel, dating from the Early Bronze Age, has survived in a remarkable state of preservation in the copper mines of Alderley Edge, Cheshire UK. Other historic timbers recovered from the mines, whilst still intact, have fared less well. An X-ray investigation into the distribution of minerals through the shovel using portable X-ray Fluorescence (PXRF) along with the use of synchrotron-based X-ray Absorption Spectroscopy (XAS) measurements of the copper and arsenic chemical speciations has provided clues to the methods by which metals from the mining environment have entered the wood of the shovel and ensured its survival. The distribution and nature of the minerals so determined suggest that the copper and arsenic, along with a significant lead content, entered the shovel during its original use in working mineral-rich deposits, rather than through the burial environment. The insights gained are expected to be applicable to other wooden artefacts recovered from ancient copper mines in other places.     

玉门花海毕家滩棺板《晋律注》的保护修复研究

玉门花海毕家滩出土的《晋律注》是裱糊在棺板外侧的纸本文书,因埋藏环境复杂及年代久远等各种原因,文物整体保存状况极为不佳。棺板存在残缺、断裂等多种病害,而外侧的纸本文书降解更为严重,已达到触之即粉的状态。为了使文物的完整性得以体现及能够得达到展陈的基本要求,在对棺板木材进行种属鉴定及特征分析的基础上,在文物保护基本原则与理念的指导下,对棺板进行了病害调查、清洗、粘接及加固,对外侧文书进行了内容识读、原料种类鉴定。经过保护处理使得棺板的整体性得到了体现,达到了展陈的基本要求。原料分析结果显示外侧的纸本文书为皮浆纤维,因此该文书是目前为止出土为数不多的魏晋时期以皮浆为原料的纸质实物,这对甘肃河西地区造纸原料发展的研究提供了珍贵的资料。     

A Brief History of Brain Archiving

This paper narrates the history of the conservation of the human brain, tracking techniques of brain archiving from the first experiments in the preservation of soft tissue in spirits of alcohol to the latest refinements in cryogenic technology. It traces the changing social and legal conditions that permitted the collection of post mortem human tissue, as well as the increasingly sophisticated technologies that allowed for the preservation and storage of this material. This preliminary survey of brain archiving uses examples of specific collections in order to discuss changes in the techniques, goals and achievements of neural tissue collecting from the mid-eighteenth to the late twentieth centuries.     

A brief history of brain archiving

This paper narrates the history of the conservation of the human brain, tracking techniques of brain archiving from the first experiments in the preservation of soft tissue in spirits of alcohol to the latest refinements in cryogenic technology. It traces the changing social and legal conditions that permitted the collection of post mortem human tissue, as well as the increasingly sophisticated technologies that allowed for the preservation and storage of this material. This preliminary survey of brain archiving uses examples of specific collections in order to discuss changes in the techniques, goals and achievements of neural tissue collecting from the mid-eighteenth to the late twentieth centuries.     

Ancient Egyptian hair gel: new insight into ancient Egyptian mummification procedures through chemical analysis

Artificial mummification in ancient Egypt involved the application of chemicals to the body mostly for the purpose of preservation; others were applied for ritual aspects. Unguents were used also in everyday toilette. Here we report a type of material which was applied specifically to the hair, a fatty material used as a ‘hair gel’. Personal appearance was important to the ancient Egyptians so much so that in cases where the hair was styled the embalming process was adapted to preserve the hair style. This further ensured that the deceased’s individuality was retained in death, as it had been in life, and emphasises the importance of the hair in ancient Egyptian society.     

Damage caused by insects during the mummification process: an experimental study

The process of mummification had been known since the Fourth Dynasty of the Old Kingdom (ca. 2600 bc) and continued to develop throughout ancient Egyptian history. Although mummification protected the body from decay, especially by microbes, some mummification techniques left the body susceptible to insect attack. Certain types of insects have been detected in the mummies. In scholarly publications, most authors have dealt with microorganisms, while few have concerned themselves in depth with the effect of insects on the mummies. This study aims to discuss the significance of insects and the changes they affected to the mummies during embalming. To achieve this goal, experiments were carried out replicating various mummification techniques using albino Wistar rats. Analysis and investigative techniques used included visual observation, Fourier transform infrared spectroscopy, investigation of the surface morphology by a scanning electron microscope, and color change by a spectrophotometer. The following insects could be identified as being present during the second and third processes of mummification: Dermestes maculatus, Necrobia rufipes, Saprinus gilvicornis, Chrysomya albiceps, Wohlfahrtia magnifica, and Attagenus fasciatus. In addition, the majority of our findings confirmed that the degradation by insects increased with the second and third methods of mummification. Finally, the experimental study conducted using the mummification techniques of the New Kingdom (ca. 1570–1070 bc) indicated that they were more resistant to insect attack than the other types.     

安徽萧县西虎山汉墓清理简报

本次在西虎山窑场共清理3座西汉石棺墓,出土各类器物61件,以陶器为主,部分有彩绘,在M3中还发现了汉画像石,这在皖北地区属首次发现。这次发掘揭示了淮北地区汉代石棺墓的面貌,对研究该地区的文化、经济及丧葬习俗提供了实物资料。     

陕西咸阳出土东汉陶器表面彩绘成分研究

为掌握陕西省咸阳市渭城区周陵镇费家村南两座东汉墓葬M17和M19出土15件陶器表面彩绘成分及保存现状,通过XRF,XRD,FTIR和SEM-EDS等分析仪器进行检测。经分析检测发现:M17出土6件陶器表面使用铅丹作为颜料,部分铅丹已转化为白色碳酸铅(PbCO_3)。M19出土陶器表面分别使用朱砂和铁红颜料,同时确定在部分器物表面使用了髹漆工艺。在M19出土的3件器物口沿处发现二氧化锡层,通过扫描电镜能谱分析和文献研究,确定其应为单质锡氧化而来,且使用锡汞齐方法镀锡,为进一步认识和理解这批器物提供了基础。     

Loose Howe; A North Yorkshire Log Coffin Boat Burial(s) Revisited

In 1937 a large barrow in north‐east Yorkshire was excavated by Mrs H. W. and Dr F. Elgee. A primary deposit comprising a ‘canoe’‐shaped log coffin and what were described as two ‘log boats’ or ‘canoes’ was uncovered beneath the mound. The burial did not survive; however, the ‘canoe’‐shaped coffin was found to contain an Early Bronze Age Merthyr Mawr‐type dagger, flints and some hazelnuts. Subsequently, a cremation was inserted into the top of the mound. This was accompanied by a Camerton‐Snowshill‐type dagger, a stone battle axe, a copper alloy pin, an accessory vessel and fragments from a Collared Urn. As part of a log coffin radiocarbon‐dating project, one of the hazelnuts was radiocarbon‐dated to 2008–1772 cal BC (95.4%) and a fragment of cremated bone from the secondary burial was dated to 1890–1741 cal BC (93.2%). This paper discusses the dating results and reconsiders the interpretation of the log coffin as a boat.     

Hair surface and mechanical properties of Copt mummies from Antinopolis

In the late nineteenth century, excavations were conducted in the necropolis of the site of Antinopolis, a city founded in 130 CE. Over sixty Copt mummies, out of the thousands of graves excavated, were brought to France in the early twentieth century. Unlike mummies of the Pharaonic era, no specific study has been conducted on the mummies of the Christian era. To identify these techniques of mummification and their state of preservation, the Louvre museum has conducted a multidisciplinary study on thirty-nine mummies located throughout France.In this work, we studied the surface topography and the mechanical properties of the hair from eleven mummies.To qualify the hair wear, 3D topography of their surface has been measured with an interferometer of vertical resolution 2 nm and an analysed surface of 20 × 84 μm. The results show that, for most of the hair samples, the cuticle has completely disappeared and the cortex appears very porous. However, for a few of the hair samples, the scales are perfectly regular like those of healthy hair, which is probably due to the mummification techniques used.The mechanical properties of the hair were determined using a three-point bending mechanical test.The results show that the mechanical hair properties are not correlated with the surface morphology of the cuticle.     

Chenopodium Seeds in Open-Air Archaeological Sites – How to Not Throw the Baby Out with the Bathwater

ABSTRACT

Differentiating between charred and uncharred plant remains may appear straightforward but for some taxa (here fat-hen, Chenopodium album type) can be very problematic. Recognition of the preservation state is obviously crucial for archaeobotanical data derived from dry, open-air sites. Fat-hen as a common weed, is also one of the most important components of a persistent soil seed bank. It is also a well-known food plant, gathered or cultivated. Numerous findings of fat-hen seeds in unclear states of preservation were noted in the Early Neolithic sites of the Linear Pottery culture in Kuyavia (N Europe). In previous studies such specimens were omitted as probably uncharred. Re-examination of Neolithic finds of fat-hen from that region showed the link of their abundancy with the earliest phases of the Neolithic occupation. The plant probably played an important role in the diet of the early Neolithic settlers there. It may indicate intensive use of local, open, fertile, probably alluvial areas. Distinguishing between ancient and modern specimens of that common weedy plant, producing large amounts of small, black, resistant seeds is thus very important, holding a great potential to shed new light on the origins of agricultural societies in this part of northern Europe.