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Combustion features are routinely studied using micro-geoarchaeology in prehistoric sites, providing information on human social life. In submerged prehistory such features have not been studied from the microscopic perspective, and here we present a study of three combustion features from two submerged Neolithic sites from the southeastern Mediterranean: Atlit-Yam (ninth-millennium cal BP) and Neve Yam (eighth-millennium cal BP). Mineralogical analyses were utilized to detect heated clay while quantification of phytoliths, ash pseudomorphs, and dung spherulites allowed determination of fuel sources. Micromorphology was deployed to determine whether or not the features represent in situ combustion activities and to understand formation processes. Two installations from Atlit-Yam contain evidence for short in situ fire events that were fueled by wood and reached 700–900 °C. One installation from Neve Yam contains reworked deposits that bear evidence for combustion at 500–700 °C, includes remains of wood ash and livestock dung. However, this feature cannot be identified with certainty as an in situ combustion feature. This research shows that pyrotechnological, functional, and social information can be gleaned from underwater combustion features using a micro-geoarchaeological approach and techniques. [ABSTRACT FROM AUTHOR]

The investigation of submerged archaeological sites faces numerous logistical challenges in the recovery of stratigraphic sequences and, as a result, is often restricted to surface deposits limiting the application of geoarchaeology. This paper outlines a new integrated field and microanalytical methodological protocol to investigate deep stratigraphic sequences (up to 2 m) within the submerged Pre‐Pottery Neolithic (PPN) site of Atlit‐Yam (9267–7970 cal. B.P. [calibrated years before the present]). A new coring method for the extraction of deep underwater stratigraphy was developed to extract three cores: two between architectural remains within the site and one outside the site. The cores were analysed using Fourier‐transform infrared spectroscopy, phytolith and pollen analysis and archaeological micromorphology to detect anthropogenic signals and undertake paleoenvironmental reconstruction. Our results indicate anthropogenic evidence at 95 cm depth based on the presence of heat‐altered sediments, high phytolith concentrations and micromorphological observations of archaeological remains. Radiocarbon analysis indicates the oldest anthropogenic layers date to the Mid Pre‐Pottery Neolithic B (PPNB) and Late PPNB (9859–9323 cal. B.P.), bearing implications for reassessing the emergence of the first coastal Neolithic villages in the Mediterranean. Our integrated field and multiproxy micro‐geoarchaeological protocol offers a new approach to detecting and studying submerged archaeological sites worldwide. [ABSTRACT FROM AUTHOR]

This article presents a systematic methodological comparison of three archaeobotanical proxies (phytoliths, pollen and seeds) applied to an assemblage of dung pellets and corresponding archaeological refuse deposits from Early Islamic contexts at the site of Shivta. We set out with three main methodological questions: one, to evaluate the relative input of botanical remains from dung in refuse assemblages; two, to evaluate each archaeobotanical dataset and to test whether they are comparable, complementary or contradictory in their interpretations from dung; and three, infer herding practices at the site during the Early Islamic period. Our findings show that ovicaprine dung accumulated in Early Islamic Shivta during at least two periods: mid-7th–mid-8th centuries CE, and late-8th–mid-10th centuries CE. Methodologically, we see incomplete and incompatible reconstructions arise when each method is considered alone, with each proxy possessing its own advantages and limitations. Specifically, the amount of preserved seeds in dung pellets is low, which restricts statistical analysis and tends to emphasize small or hard-coated seeds and vegetation fruiting season; yet this method has the highest taxonomic power; pollen preserves only in uncharred pellets, emphasizes the flowering season and has an intermediate taxonomic value; phytoliths have the lowest taxonomic value yet complete the picture of livestock feeding habits by identifying leaf and stem remains, some from domestic cereals, which went unnoticed in both seed and pollen analyses. The combined archaeobotanical reconstruction from samples of the mid-7th–mid-8th centuries suggests that spring-time herding at Shivta was based on free-grazing of wild vegetation, supplemented by chaff and/or hay from domestic cereals. For the late-8th–mid-10th century samples, phytolith and pollen reconstruction indicates autumn-winter free-grazing with no evidence of foddering. Unlike the dung pellets, macrobotanical remains in the refuse deposits included domestic as well as wild taxa, the former mainly food plants that serve for human consumption. Plant remains in these refuse deposits originate primarily from domestic trash and are only partially composed of dung remains. The significance of this study is not only in its general methodological contribution to archaeobotany, but also to lasting discussions regarding the contribution of dung remains to archaeological deposits used for seed, pollen and phytolith analyses. We offer here a strong method for determining whether deposits derive from dung alone, are mixed, or absolutely do not contain dung. This has important ramifications for archaeological interpretation. • Archaeobotanical proxies compared in modern and archaeological dung and sediments. • Phytoliths in dung mainly inform on grass fodder; pollen and seeds on wild taxa. • Overall, dung pellets and associated sediments yielded different botanical finds. • Results relevant to unresolved debates about proxies for human diet reconstruction. • Early Islamic pastoral activity reconstructed at Shivta in arid southern Levant. [ABSTRACT FROM AUTHOR]

During the ongoing excavations of Area Q at Tel Megiddo, a variety of on-site geoarchaeological analytical methods have been used in the study of Iron Age occupations dating to the Iron Age IIA. The aim of this approach is to optimally combine macroarchaeology with microarchaeology in order to reconstruct activities that were carried out within an Iron Age urban neighborhood. The macroscopic finds indicate that this area belonged to a quarter that features both domestic and public structures. Of particular interest are (a) evidence for abandonment and spatial differentiation of activities in Level Q-5 associated with a large, well-built structure with 18 pillars; and (b) localized small-scale destruction associated with ephemeral metalworking activity related to occupation during Level Q-4. Similar approaches have been carried out at other sites in Israel (e.g., Tel Dor and Tell es-Safi/Gath), yet only at Megiddo have we been able to use these methods to study a large excavation area (ca. 200 m2). The results shed new light on the variability of human activities in public and domestic contexts in an urban environment, and contribute to understanding the uses of space and the phenomenon of destruction by fire. [ABSTRACT FROM AUTHOR]

Abstract: Cooking installations are among the most abundant features in Bronze and Iron Age archaeological sites in the southern Levant, yet until now their study has been mostly descriptive. We present a study of 11 purported archaeological cooking installations from three different Bronze and Iron Age sites in Israel in which we deployed a variety of microarchaeological techniques. We provide direct physical evidence, based on Fourier Transform Infrared (FTIR) spectroscopy demonstrating that the archaeological installations were operated with temperatures as high as 900 °C. Using this technique we also demonstrate that all the mud-constructed installations studied by us were internally-fueled and therefore should be identified as Tannurs rather than the externally- fueled Tabuns. We studied in detail the quantities of ash-related microscopic remains, including opaline phytoliths, calcitic wood ash pseudomorphs and dung spherulites. We show that phytolith morphotype analysis cannot distinguish between wood-dominated and dung-dominated fuel materials, while a newly developed method that calculates the ratio of ash pseudomorphs to dung spherulites (PSR method) makes such a distinction possible. Moreover, we experimented with the effect of partial dissolution on fuel ash PSR values and utilize the results to explain taphonomy and diagenesis associated with two types of archaeological cooking installations – pebble hearths and baking ovens. In addition, we identified micromorphological criteria that can be used to assess whether ash deposits in or above a cooking installations are in situ and/or disturbed. Taken together, all lines of evidence used in this study indicate that wood was the major fuel material across time and space in the studied archaeological contexts, while dung was a secondary source of fuel. This observation also cross-cuts different culture-historical entities (Philistines, Canaanites, Israelites and Egyptians). In addition, wood was preferred as fuel irrespective of environmental differences among the studied sites. This study is yet another demonstration of the value of integrating microarchaeological techniques and approaches to traditional macroscopic archaeology. [Copyright &y& Elsevier]

Abstract: Silicification and phytolith formation in Poaceae species growing in arid and semi-arid regions are commonly thought to be positively correlated with silica and water availabilities and with transpiration. To expand our understanding of this phenomenon, we chose to study species of the Asteraceae, the largest dicotyledonous family. We measured phytolith concentrations in eight Asteraceae species (three non-spiny and five spiny) and one Poaceae species (Avena sterilis), as reference, along a large climatic gradient of 80–900mm mean annual rainfall in Israel. Phytolith concentration in A. sterilis was found to be positively correlated with water availability and with a minor effect of soil silica availability. The three non-spiny Asteraceae species have a partially similar pattern of changes in silicification according to water availability in more humid habitats, but with higher phytolith concentrations in the most arid site. The five spiny Asteraceae species have various patterns of phytolith formation, not consistently related to water and soil silica availabilities. These results demonstrate that patterns of phytolith formation in the Asteraceae differ among taxa and also from the situation in grasses. [Copyright &y& Elsevier]

Abstract: Kebara Cave (Mount Carmel, Israel) exhibits extensive use of fire by Neanderthals in the Middle Paleolithic. Phytoliths are abundant, indicating that plants were common in the cave. In addition, micromorphological analyses of archaeological deposits furnish precise contextual background to the phytolith analysis, and provide constraints on how phytolith and other micro remains can be interpreted. Phytolith data are coupled with micromorphological observations from undisturbed combustion features from Kebara from the Middle and Upper Paleolithic. In order to maximize accuracy of interpretations, different factors have been taken into account, such as phytolith preservation, the discrimination between anthropogenic and non-anthropogenic plant deposition, and the variability of plant uses. The results show that dissolution is an important factor in certain areas of the cave, mostly because of high pH conditions, whereas in other areas of the cave, secondary silica has affected the original cell morphology of the phytoliths. In general, wood was the main fuel used for the fires, and the presence of other plant remains such as grasses or dicotyledonous leaves is, in certain areas, mostly related to contamination attached to the bark of the trees; whereas in others, it might be associated with other reasons such as tinder to help start the fires. Seed coats of plants from the Boraginaceae family, which grow around the cave entrance, are abundant in certain levels and mostly related to their fall out at the cave mouth. [Copyright &y& Elsevier]

Abstract: Destruction events in multi-period sites are valuable marker horizons that represent time-synchronous events across the site and sometimes between sites. Destruction layers often preserve rich finds that provide insights into site use. Here we use both macro- and microarchaeological methods to study a destruction event from the late 9th century at Tell es-Safi/Gath in Israel. A major conflagration at this specific location resulted in the consolidation of parts of the roof construction materials, thus enabling us to differentiate between roof, walls and floor materials. We could reconstruct the events which lead to the formation of an approximately 80 cm thick layer. The base of this layer that overlies the floor surface is a thin charred organic material-rich ash layer. As the clays in this layer were not altered by heat and the ceramics still have preserved residues, we conclude that the ash was produced elsewhere and was redistributed to this location. Ceramics that are associated with burnt roof sediments do not have preserved residues. We also estimate the time that each of the accumulation events might have taken, and conclude that this accumulation occurred over decades. The architecture and artifacts found within and beneath the destruction do not allow us to unequivocally identify the function of this area prior to destruction. We do however identify an unusual bin and associated stone pavement, and a corner rich in artifacts, phytoliths and charred organic material. We also show that a wall was built of fired mud bricks; a most unusual occurrence for this time period in the Levant. This study demonstrates well the usefulness of an integrated macro- and microarchaeological approach to understanding the archaeological record, as well as the benefits of using an on-site laboratory. [Copyright &y& Elsevier]

Abstract: A rapid phytolith extraction procedure is described, that allows phytolith concentrations and morphotype assemblages to be analyzed within hours. This procedure enables the results of these analyses to be used during an archaeological excavation, in order to better understand how plants were used. The new procedure was tested using a standard phytolith extract and two experimental phytolith-sediment blends and found to be both accurate and precise. The reliability of partial slide counting was evaluated and found to be as accurate and precise as existing phytolith quantification methods. The new extraction and counting procedures were applied to an archaeological site, Tell es-Safi/Gath, Israel. The results demonstrate how information on phytolith concentrations in sediments that are available from one day to the next, can be used during an excavation to more effectively document the local features of interest and obtain better information. [Copyright &y& Elsevier]

Abstract: The Negev Highlands (southern Israel) is an arid zone characterized by settlement oscillations. One settlement peak occurred in the early Iron Age IIA (late 10th and early 9th centuries BC). The most conspicuous structure in many sites of this period is an oval compound comprised of an internal courtyard surrounded by rooms. Two hypotheses for the function of these oval compounds are that they served as Israelite fortresses which guarded the southern border and routes of the Solomonic kingdom, or that they represent local agro-pastoral groups. In order to gather more information regarding the subsistence practices conducted in these oval compounds, we carried out a small-scale excavation at the site of Atar Haroa. We focused on sediment sampling and used several geoarchaeological, as well as isotopic, techniques in order to identify macroscopic and microscopic remains related to animal husbandry and crop agriculture. The remains identified from the archaeological sediments were compared with modern reference materials collected from abandoned Bedouin camps. The excavation included two half rooms and several test pits in the courtyard of the oval compound, featuring one Iron Age occupation level composed of gray sediments and relatively small amounts of pottery, bones and macro-botanical charred remains. Micromorphological, mineralogical, dung spherulite and isotopic analyses carried out on the gray occupational sediments from the rooms show that they originate from wood ash and dung, both used as fuel. Similar analyses of the gray sediments in the courtyard show that they originate only from degraded livestock dung. Phytolith analyses show that the gray anthropogenic sediments have similar concentrations of phytoliths as in control (yellowish) sediments and in the dung of winter free-grazing desert livestock and lichen-grazing black dwarf Bedouin goats. Phytoliths indicative of cereal crops are completely absent in the archaeological dung remains, indicating that cereal crops were not processed by the site inhabitants. Based on ethnographic and archaeological parallels, and on the presence of grinding stones and absence of sickle blades in the excavated rooms, we infer that the inhabitants at the oval compound at Atar Haroa subsisted on livestock herding and bought or exchanged cereal grains. Our results support the hypothesis that the inhabitants at the oval compound at Atar Haroa were desert-adapted pastoralists, rather than garrisoned soldiers. [Copyright &y& Elsevier]

Abstract: The presence of many phytolith-rich layers in late Bronze and Iron Age deposits at Tel Dor, Israel, are indicative of specific locations where plants were concentrated. Detailed studies of six of these phytolith-rich layers and associated sediments from Tel Dor show that the phytoliths were derived mainly from wild and domestic grasses. The most common domestic grass was the cereal Triticum aestivum (bread wheat). Three of these layers have a microlaminated microstructure, associated dung spherulites and phosphate nodules; characteristics that all point to the phytolith-rich layers having formed from dung in animal enclosures. In two of the layers, the microlaminated structure is absent while dung spherulites and phosphate nodules are present, suggesting that these too originate from dung that was not deposited in an enclosure. The sixth layer is microlaminated but does not contain spherulites. We thus cannot suggest a parsimonious explanation of its observed properties. Concentrations of burnt phytoliths are present in three locations, implying that dung was either burnt in situ or the ashes from burnt dung were redeposited. The transformation of dung accumulations into phytolith-rich layers involves a loss of organic material and hence a significant reduction in sediment volume, which is clearly apparent in the stratigraphy of some of the locations examined. The volume reduction can be observed in the macrostratigraphy and has important implications with regard to macrostratigraphic interpretation. The presence of abundant phytolith-rich layers on the tell has significant implications for the concept of ‘urbanism’ during these periods. [Copyright &y& Elsevier]

Albert, R. M. and Cabanes, D. 2007. Fire in prehistory: An experimental approach to combustion processes and phytolith remains. Isr. J. Earth Sci. 56: 175-189.Silica phytoliths are commonly found in hearths as a result of the combustion of plants. Their study in prehistoric hearths has enabled the identification of fire remains not visible to the naked eye due to the postdepositional processes. It has also enabled determination of the type of fuel used for the fires, and a better understanding of the functionality of hearths. However, little work has been done on understanding the combustion properties of fires and their relationship to the amount, distribution, and preservation of burned phytolith remains. We present here results of experiments carried out to shed more light on these questions. These results indicate that there are important differences in the combustion properties of fires. The remaining burned residues of the combustion depend on the use of naturally-dried or fresh fuel. These differences are related to the relationship between the presence of ash and charcoal fragments, the proportion of the acid-insoluble fraction, the amount and morphological distribution of phytoliths in the different fractions, and the refractive indices of the phytoliths. To recognize these properties it is essential to sieve the samples into different size fractions prior to the phytolith and mineralogical study. Postdepositional processes need to be taken into account as well when analyzing archaeological fire remains. The preference of one type of fuel over the other may have important implications related to the collection strategies and the proximity of available resources, as well as to the various possible uses of caves. [ABSTRACT FROM AUTHOR]

Abstract: Interpretation of past urban societies in the Near East, whose settlements are known mostly as tell sites, is largely based on macro-stratigraphy and on the association of architecture with macroscopic artifacts. Analyses of sediments, common in prehistoric sites, are rare in tell sites. Here we show the results of a detailed geoarchaeological study of the micro-stratigraphy of a sedimentary sequence associated with early Iron Age Phoenician monumental architecture. The study involves mineralogical, micromorphological and phytolith analyses and provides new insights into the stratigraphic sequence and the use of architectural spaces. The sedimentary sequence examined comprises alternating layers of gray ‘fill’ deposits and white ‘floors’. We show that ‘floors’ made from local calcareous sandstone in the lower part of the sedimentary sequence were heated and are thus in effect ‘plaster floors’. A concentration of micro-laminated, trampled fish remains above the most elaborate of these plaster ‘floors’ indicates activities related to fish processing. Fine white layers in the upper part of the sedimentary sequence that were considered as plaster based on macroscopic examination are in fact composed almost entirely of opaline grass phytoliths. The phytoliths appear in an undulating micro-laminated structure and are associated with dung spherulites and phosphate nodules, thus probably reflecting livestock penning. The formation of ‘phytolith floors’ involves extensive volume reduction due to the degradation of the organic material and this may result in ‘floor’ subsidence, a phenomenon that is often observed in archaeological sites. Most ‘fill’ deposits include macroscopic and microscopic remains of wood ash, bones, phytoliths, charcoal, ceramics, plaster and mollusk shells, reflecting the debris produced from household activities. This study shows how a combination of macro-stratigraphy with microscopic and mineralogical analyses of the sediments within architectural spaces can provide information on the varying ways in which the space was used through time, and also contributes to solving macro-stratigraphic problems. [Copyright &y& Elsevier]

Tel Miqne (Khirbet Muqanna), the largest Iron Age site in Israel, is identified as biblical Ekron, one of the cities of the Philistine pentapolis. Sediment samples were collected from different contexts with a twofold objective in mind. First, confirmation was sought for the identification of particular Philistine loci as occupation surfaces. Since little is known about Philistine daily life, the second objective was to discern through phytolith analysis the plant or plants that contributed phytoliths to the sediments. Phytoliths from the sediments were compared to those extracted from a reference collection of modern grasses, sedges, and rushes known to occur in Israel. In particular, the possibility was explored that the Philistines may have used a reedgrass, Phragmites australis, that currently grows in the adjacent wadifor mats, thatch, and basketry. [ABSTRACT FROM AUTHOR]

Chemical and phytolith analyses of well-preserved goat faecal pellets from different strata of the Ramon I Rock Shelter, in the Makhtesh Ramon (Crater) in the Central Negev, Israel, show patterns of seasonal stabling and grazing among nomads from three different periods, the Late Neolithic, the Early Bronze Age, and recent times (ca. 1800 AD to date). Low faecal lignin and high protein in the ancient pellets, together with the high proportion of phytoliths from monocotyledons, but absence from grass inflorescences and seeds, reflect consumption of lush green herbage, with no browsing. In contrast, pellets from recent flocks indicate either foddering or later seasonal grazing. The chemistry of pellets collected from wild ibex grazing and browsing in spring through autumn corroborate the conclusion that ancient grazing, as reflected in the rock shelter materials, was early in the growing season. The morphometry of faecal pellets suggests that the goats were larger in the Early Bronze than in the Late Neolithic and Recent Periods. In general, the presence of rock shelter stabling spatially remote from habitation sites indicates seasonal social/economic fission, with specialized goatherds separating from the primary campsites for short periods as early as the Late Neolithic. A Near Infrared non-destructive calibration of protein in faecal pellets was implemented. • Late Neolithic and Early Bronze Age goat faeces were found in Negev rock shelters. • Archaeological dung pellet chemistry and phytoliths indicated winter/early spring grazing. • Modern goat and Ibex pellet chemistry indicated year-round grazing or foddering. • Neolithic shepherds separated from communities to implement short episodes of grazing. • Near infra-red spectra of archaeological faeces provide dietary information. [ABSTRACT FROM AUTHOR]