Residue Analysis (Archaeology)

A recently identified Tusayan Polychrome (AD. 1125-1290) jar from northern Black Mesa, Arizona represents the only known Post-Chacoan cylindrical vessel. Identified within the midden of a small late Pueblo II-early Pueblo III period habitation site the jar circumstantially connects Ancestral Puebloan groups in the Kayenta area to the Chacoan system. This presentation discusses the context of the jar, Hopi interpretations and insights, and ongoing residue analysis leading to two sociocultural considerations. First, we consider the possible connections between the Ancestral Puebloans of western Kayenta and Chaco Canyon, a 220 kilometers space separated by the Chuska Mountains. Second, we reflect on the ritual beverage consumption associated with Chacoan cylindrical vessels and its connections to the Kayenta heartland.

Four small ceramic juglets that had been used as containers for offerings in an elite Middle Bronze Age III (ca. 1650-1550 BCE) masonry tomb uncovered at Tel Megiddo in the Jezreel Valley, Israel were tested using organic residue analysis. Notably, residues of vanillin, 4-hydroxybenzaldehyde, and acetonvanillone were identified in three of the four juglets examined. These are the major fragrance and flavour components of natural vanilla extract. To date, it has been commonly accepted that vanilla was domesticated in the New World and subsequently spread to other parts of the globe. Our research first ruled out all possibility of sample contamination and then conducted a post-organic residue analysis investigation of various species within the plant kingdom from which these principle compounds could have been exploited. The results shed new light on the first known exploitation of vanilla in an Old World context, including local uses, the significance and employment in mortuary practices, and possible implications for understanding trade networks in the ancient Near East during the second millennium BCE.

The spread of early farming across Europe from its origins in Southwest Asia was a culturally transformative process which took place over millennia. Within regions, the pace of the transition was probably related to the particu- lar climatic and environmental conditions encountered, as well as the nature of localized hunter–gatherer and farmer interactions. The establishment of farming in the interior of the Balkans represents the first movement of South- west Asian livestock beyond their natural climatic range, and widespread evidence now exists for early pottery being used extensively for dairying. However, pottery lipid residues from sites in the Iron Gates region of the Danube in the northern Balkans show that here, Neolithic pottery was being used predominantly for processing aquatic resources. This stands out not only within the surrounding region but also contrasts markedly with Neolithic pottery use across wider Europe. These findings provide evidence for the strategic diversity within the wider cultural and economic practices during the Neolithic, with this exceptional environmental and cultural setting offering alternative opportunities despite the dominance of farming in the wider region.

During the excavation of a Merovingian cemetery in Elversele (Temse, Belgium), archaeologists encountered nine burials each with one earthenware vessel clearly deposited in the graves, dating to the 6th–7th century AD. Vessels as grave goods are often linked with funerary feasting in Merovingian contexts, the contents of the vessels acting as funerary meals in gift-giving relationships. However, as the custom of depositing vessels seems to diminish throughout the 6th and 7th century, it has been suggested that such vessels in most cases functioned only symbolically and that they held no actual foodstuffs. In order to verify or debunk this hypothesis, eight of the nine vessels from Elversele were sampled for organic residue analysis. Gas Chromatography – Mass Spectrometry (GC–MS) was used on the archaeological samples and various organic compounds related to foodstuffs were identified. This was complemented with an archaeological assessment of the pottery. Traces of animal fats and possibly also vegetal matter have been attested and, together with the results of the archaeological assessment, form clear evidence for the deposition of foodstuffs in these graves.

Absorbed residue studies have been used in subsistence research for decades. Only more recently have the chemical methods employed been used to explore the consumption of ritual concoctions such as those including cacao, yaupon holly, and alcohol. In this article we use mass spectrometry to identify Datura residues in prehistoric contexts from western Mexico and the American Southeast. Datura is a genus of flowering plants that contain hallucinogenic alkaloids. Their use in both regions is known historically and still continues today. This study sampled 55 pottery vessels and 18 shell vessels using both a traditional burr method and a water-based sonicator sampling method. Datura residues were found in 13 pottery vessels and 14 shell vessels using both sampling approaches. These results demonstrate that it is possible to identify Datura residue in pottery and shell vessels and that the use of Datura extends back into prehistory in both regions. The form and decoration of pottery vessels with Datura residues show correlations with specific motifs and themes. Historically, shell vessels were used in the Southeast for the consumption of another ritual beverage, called the Black Drink. The presence of Datura shows that those vessels were used for other kinds of beverages as well.

Los estudios de residuos absorbidos han sido utilizado en la investigación de la subsistencia durante décadas. Sólo más recientemente se han utilizado los métodos químicos empleados en estos estudios para explorar el consumo de brebajes rituales tales como los que incluyen cacao, acebo de Yaupon, y alcohol. En este trabajo se utiliza la espectrometría de masas para identificar los residuos de Datura en contextos prehistóricos del oeste de México y el sureste de Estados Unidos. Datura es un género de plantas florecientes que contiene alcaloides alucinógenos. Su uso en ambas regiones es documentado históricamente y continúa en el presente. Para este estudio se analizaron muestras de 55 vasijas de cerámica y 18 vasijas de concha utilizando tanto el método tradicional de rebaba como el método de muestreo en baño de sonicación con agua. Residuos de Datura fueron encontrados en 13 vasijas de cerámica y 14 vasijas de concha utilizando los dos sistemas de muestreo. Estos resultados demuestran que es posible identificar los residuos de Datura en vasijas de cerámica y concha y que el uso de Datura se remonta a la prehistoria en ambas regiones. La forma y decoración de las vasijas de cerámica con restos de Datura muestran correlaciones con motivos y temas específicos. Históricamente, se utilizaron vasijas de concha en el Sureste para el consumo de otra bebida ritual, llamada la Bebida Negra. La presencia de Datura muestra que las vasijas se utilizaron también para otras bebidas.

Ancient starch research illuminates aspects of human ecology and economic botany that drove human evolution and cultural complexity over time, with a special emphasis on past technology, diet, health, and adaptation to changing environments and socioeconomic systems. However, lapses in prevailing starch research demonstrate the exaggerated expectations for the field that have been generated over the last few decades. This includes an absence of explanation for the millennial-scale sur-vivability of a biochemically degradable polymer, and difficulties in establishing authenticity and taxonomic identification. This paper outlines new taphonomic and authenticity criteria to guide future work toward designing research programs that fully exploit the potential of ancient starch while considering growing demands from readers, editors, and reviewers that look for objective com-positional identification of putatively ancient starch granules.

Organic residue analyses of archaeological ceramics can provide important insights into ancient foodways. To date, however, there has been little critical reflection on how lipid residues might (or might not) reflect dietary practices or subsistence strategies more generally. A combination of ethnoarchaeological research and chemical and isotopic analyses of lipid residues from pottery made and used by modern Samburu pastoralists in northern Kenya was undertaken to supplement the interpretive framework used in archaeological investigations. A total of 63 potsherds were collected from various contexts, including settlement sites and rockshelters, and analysed using gas chromatography (GC), gas chromatography-mass spectrometry (GC-MS) and gas chromatography-combustion-isotope ratio mass spectrometry (GC-C-IRMS). The results showed that the free fatty acids, palmitic (C 16:0) and stearic (C 18:0), dominated the lipid profiles, with extremely broad ranges of δ 13 C values. The majority of the Δ 13 C values from Samburu pots suggest that vessels were intensively used to process ruminant carcass products, yet the Samburu economy is not, in fact, meat-based at all. Despite an overall reliance on dairy products, milk is rarely processed in ceramic vessels, largely due to cultural prohibitions. Surprisingly, a number of vessels from one site, Naiborkeju Hill, were used to process dairy products. Compound-specific radio-carbon dating of lipids from these sherds suggests that this pottery originated from an earlier period, demonstrating a possible shift in ceramic use by pastoralist communities in this region over time. The overall conclusion is that lipid residues may not necessarily reflect, in a simple way, the day-to-day consumption or the perceived relative importance of different foodstuffs. In the Samburu case, lipid residues reflect the functional and ideological suitability of ceramics for processing only certain types of food (meat/fat/bones), despite an overall reliance on milk. These conclusions are important when considering the origins and development of African pastoralism, for example, as interpreted from the archaeological record.

During the 2013 and 2014 excavation seasons, a cache of complete ceramic vessels was recovered from a stone-outlined pit sealed by domestic building collapse at the site of Tall Ḥisbān, a Mamluk-era rural site in central Jordan. Among the finds were two whole, handless stonepaste jars of the late 14th century—an extremely rare find in Bilād al-Shām—along with a small, handless handmade jar containing a gelatinous residue. Valuable not only for the stratigraphic association of a local coarse ware (of previously unclear chronology) with datable imports, the pit provides the opportunity to explore the realities of site abandonment in a rural setting and the communal experience associated with it. The following study presents the results of recent residue analysis of these jars, as interpreted by the unique conditions of the jars' deposition and against the backdrop the emerging picture of the household economy of medieval Ḥisbān, its food systems, and the fast rise and slow decline of the village in the 14th through the 16th centuries CE. In the process, this essay suggests ways in which rural communities in southern Syria were transformed on the eve of the Ottoman conquest. Ceramic deposition and settlement abandonment Pottery collected from archaeological surveys has been the primary evidence for settlement shifts in the late Mamluk era in southern Bilād al-Shām (the region between Damascus and the Gulf of Aqaba and the Sinai). These shifts, and the demographic changes behind them, are only now beginning to come into focus, with more fieldwork centered on rural sites and with the development of landscape archaeology in the region. The abandonment of many large villages and towns, and the general

There is no recorded maize (Zea mays spp., mays) from sites predating ca. cal AD 800 in the northern Lake Michigan or Lake Superior basins of the western Great Lakes, despite the presence of maize microbotanicals including phytoliths and starches in Michigan, New York, and Quebec as early as 400 cal BC.  To evaluate the potential for an earlier maize presence in the northern Lake Michigan basin, samples of carbonized food residues adhering to 16 ceramic vessels were obtained from the Winter site (20DE17) located on the Garden Peninsula in the northern Lake Michigan basin. Each sample was split and sent to two analysts.  Both analysts identified low incidences of maize starch and phytoliths in multiple samples, with overlapping identifications on several.  Three direct accelerator mass spectrometry dates on the carbonized residues reveal maize incorporated into the residues as early as the second century cal BC, 800 years before any regional macrobotanical evidence.  Although the method of dispersal cannot be determined, these results support the proposition that initial northern dispersal of maize in the region may have been nearly 800 years earlier than macrobotanical evidence would suggest and is consistent with the timing of its introduction to the lower Great Lakes area.

Iron oxide Gypsum Quartz Reflected visible light microscopy (VLM) Confocal Raman microspectroscopy (micro-Raman) A B S T R A C T Ancient trace residues left on stone artefacts by people represent a source of potentially fruitful data about diet, technology, and behaviour, but their investigation is not problem-free. Rather, correct identification of degraded residues and determination of their natural or anthropogenic origin remains at the heart of current methodo-logical development in lithic residue analysis. It is increasingly becoming clear that reflected visible light mi-croscopy (VLM) is insufficient to make secure identifications of ambiguous residues. Confocal Raman micro-spectroscopy (micro-Raman) is a non-destructive technique that can identify the specific molecular nature of microscopic residues with high spatial resolution. Here, the identification of artefact residues as anthropogenic by visual inspection alone was found to be incorrect in all cases tested. Micro-Raman provided the key source of information to unambiguously determine the chemical nature of residues and hence their origin.