Ground Stone Tools Research Articles

Evidence of ritual breakage of a ground stone tool at the Late Natufian site of Hilazon Tachtit cave (12,000 years ago).

Destruction of valuables is a common behavior in human history. Ethnographic data show the polysemic, but fundamentally symbolic, nature of this act. Yet, research aimed at exploring symbolic destruction in prehistoric societies has underlined the difficulties in establishing unambiguous evidence for such behaviour. We present here the analysis of a basalt tool fragment which provides evidence for intentional breakage associated with ritual activity 12,000 years ago. The tool fragment was part of a unique assemblage of grave goods deposited in a burial pit of a woman suggested to have been a shaman (Hilazon Tachtit cave, Southern Levant). The reconstruction of the artefact’s life history through morphological, 3D, use wear, residue and contextual analyses suggest that: 1) the fragment was initially part of a shallow bowl used for mixing ash or lime with water; 2) the bowl was subsequently intentionally broken through flaking along multiple axes; 3) The bowl was not used after its breakage but placed in a cache before the interment of the deceased, accompanied with other special items. The broken bowl fragment underlines the ritualistic nature of the act of breakage in the Natufian society. The research presented in this paper provides an important window into Natufian ritual behaviour during the critical period of transformation to agricultural communities. In addition, our results offer new insight into practices related to intentional destruction of valuables associated with death-related ceremonies at the end of the Palaeolithic.

Quandong stones: A specialised Australian nut-cracking tool.

The quandong or native peach (Santalum acuminatum R.Br.) has been recognised as an important and tasty food resource among Aboriginal Australians in arid and semi-arid areas of southern Australia. It is valued for its fruit that is consumed raw or dried, and for its kernel, which is eaten raw or ground into paste for medicinal and skin care purposes. This paper reports on a study of ground stone implements within the Murray Darling Basin that has identified quandong stones as a distinct type of implement made specifically for the efficient cracking of quandong nuts. Data are presented on 1,327 ground stone implements from collections in 12 different locations in the Murray-Darling Basin (MDB), an area almost completely devoid of stone sources. Given the paucity of stone, multi-purpose use of implements is widely documented. Although it was common to find pits present in mortars and other ground stone tools demonstrating multiple functions, including use as anvils, a class of single purpose stones with multiple pits and distinctive form was identified. Most of these were found in areas known for groves of quandong and four were analysed for use-wear and residues along with two other ground stone items from the MDB. The results support their identification as specialised anvil stones for cracking quandong nuts.

Chalcolithic groundwater mining in the southern Levant: open, vertical shafts in the Late Chalcolithic central coastal plain settlement landscape of Israel

Levantine adaptive water subsistence and exploitative water management studies concerning late pre- and proto-history have intensified since 2000. This comes in the wake of findings concerning domestic water (e.g., groundwater wells and surface irrigation systems) in particular in the eastern Mediterranean basin. Excavations conducted over the last 15 years on Israel's central coastal plain revealed several clusters of anthropogenic, vertical, narrow, deep shafts, apparently disassociated from contemporary settlement or burial localities. The shafts were cut through local kurkar and/or hamra soils. Despite their seemingly isolated, open-space locations within the settlement landscape, the shaft fills yielded a rich, albeit secondary source of typical settlement waste, consisting mostly of discarded pottery vessels, chipped- and ground-stone tools, and faunal remains. All these remains date exclusively to within the Late Chalcolithic period (LC1), contemporary with and relatable to the Beer Sheva aspect of the period (c. 4200 cal BC-3900 cal BC). This paper reviews the current state of research vis à vis these shafts in the eastern Mediterranean basin, in an attempt to integrate the recently recorded phenomenon of Late Chalcolithic shaft clusters in Israel's central coastal plain, into the framework of artificial groundwater wells from the early Pre-Pottery Neolithic through the Late Chalcolithic periods.

Bronze Age stone tools in Nuragic Sardinia: The case of the ground-stone tools from Nuraghe Cuccurada-Mogoro (Sardinia, Italy)

The use of stone tools has always characterized the everyday life of Nuragic people, the communities that lived in Sardinia (Western Mediterranean, Italy) during the Bronze and Iron Ages. Several archaeological sites on this island attest to the great importance of stone-made instruments, among which are ground-stone tools. Although various studies on Sardinia have focused on the use of tools for food processing or transforming raw materials, they tend to exclude a systematic study of ground-stone tools and their role in Nuragic society. This paper considers a group of 39 ground-stone tools from nuraghe Cuccurada-Mogoro (west-central Sardinia), a Nuragic monument dated to the Bronze Age and re-used in the Iron Age. The study involved several forms of analysis including typology, macroscopic observation of use-surfaces and excavation data. The association of the Cuccurada's stone-tools with cooking instruments suggests the presence of areas devoted to food processing and cooking practices.The aim of this paper is first to underline the variety of stone tools employed by the Nuragic people, and second to consider the presence of common areas within the nuraghi likely used for everyday activities based on the analysis of the archaeological context in nuraghe Cuccurada-Mogoro and other similar Bronze Age contexts. Ethnographical examples on the use of stone tools provide evidence for the social value of these instruments and the organization of activities within the Nuragic community.

Detecting exchange networks in New Britain, Papua New Guinea: geochemical comparisons between axe‐adze blades and in situ volcanic rock sources

ABSTRACTCompared to elsewhere in Oceania, the history and character of stone axe‐adze production and exchange in the Bismarck Archipelago is very poorly known. To explore the feasibility of using geochemical analysis to trace past social interaction, we conducted a non‐destructive portable XRF study of 97 ground stone artefacts from archaeological contexts in New Britain and the ethnographic collection at the Australian Museum. The study capitalised on the well‐documented spatial distribution of geochemical variation resulting from the plate‐tectonic history of the region. The results indicate that prehistoric communities in New Britain specialised in goods such as ground stone tools or obsidian in order to facilitate social interaction over a large region.

First direct evidence of wild plant grinding process from the Holocene Sahara: Use-wear and plant micro-residue analysis on ground stone tools from the Farafra Oasis, Egypt

The excavation of the 8000-year-old Hidden Valley village has highlighted the importance of wild plant exploitation in the Mid-Holocene contexts of the Farafra Oasis. This site yielded high numbers of plant macro-remains, which were analysed during the early 2000s by A.G. Fahmy. Among these, Sorghum and other species of wild grasses, often found charred in the fireplaces of the site, prevail; together with the assemblage from E−75-6 (Nabta Playa) these represent the oldest evidence of wild Sorghum exploitation in the Eastern Sahara. Hidden Valley village has also yielded one of the largest assemblages of grinding implements for the whole of North Africa, which, until recent times, had been analysed only from a techno-typological perspective. The general assumption of a direct link between grinding tools and plant exploitation has been tested, and challenged using, for the first time for North African contexts, an integrated method, carried out on the actual tools, combining low- and high-power use-wear and plant micro-residue analyses. Firstly, micro-residues (mainly starch granules and phytoliths) were extracted from the Hidden Valley grinding tools, and analysed by means of a high magnification transmitted-light microscope. The identification of the plant micro-fossils was based upon the ‘visual matching’ of morphological characteristics with those of a purpose-built reference collection of modern starch granules and phytoliths. Then, tool micro-topography and use-wear traces were analysed both using a low- and high-power approach in order to detect the possible presence of macro- and micro-wear associated with plant exploitation. The grinding stones analysed showed very developed wear mainly consistent with plant processing activities. The same artefacts also yielded starch granules, sometimes in large quantities, together with a lower number of phytoliths. A number of plant tribes from the grass family Poaceae were represented in the micro-remain assemblage. Our results integrate and complement the previous archaeobotanical work carried out on the plant macro-remains from this site and stress the important role played by grinding tools in the processing activities of the variety of wild grasses that were consumed as staple food by Eastern Saharan communities during the Holocene.

Here's the dirt: First applications of confocal microscopy for quantifying microwear on experimental ground stone earth working tools

Quantitative microscopy characterizing the surface texture of wear traces has helped develop a more standardized chipped stone tool microwear practice. However, to date, these surface metrology methods have not been used to characterize ground stone tool surfaces. To expand the range of raw materials and tool types tested with these methods, we explore the application of imaging confocal microscopy for the quantification of an assemblage of experimental hoes, modelled after Late Neolithic and Early Bronze Age artifacts from China. Surface texture properties of sediment wear are compared to wear from wooden hafts to identify whether confocal microscopy can distinguish between different wear types. The results show that there is a significant difference between sediment and hafting wear and suggests further research is needed to identify how experimental conditions affect polish measurements within wear types. This preliminary study indicates that imaging confocal microscopy has excellent potential for the quantification of microwear traces on ground stone tools and may contribute to our understanding of earth working tools in prehistory.

Microwear analysis on experimental ground stone earth-working implements and its implication for investigating ancient agricultural practices

Ground stone tools encompass a wide array of implements important in the economic organization of many prehistoric and early historic societies; however, functional analysis of ground stone artefacts has been relatively limited in comparison to chipped stone tools. The appearance of microwear on ground stone artefacts is normally more complex and complicated than on chipped stone artefacts, as the mineral and textural components of the raw materials chosen for ground stone artefacts often are more heterogeneous. Currently, the baseline principles for analyzing microwear on ground stone artefacts are primarily based on the studies of non-cutting tools such as grinding and abrading implements.Our research uses experimental ground stone shovels and hoes crafted from oolitic dolomite to understand the raw material's effect on microwear development and to distinguish the microwear patterns associated with varying sediment conditions in the Neolithic and Early Bronze archaeological sites in the Middle Yellow River and Lower Yangzi River in China. The research combines detailed petrographic analysis of the raw material, measurement of the worked material's physical properties, and careful examination of microwear using both high-power and low-power approaches. The results not only advance the methods for microwear analysis on heterogeneous raw materials, but also enrich the microwear dataset for understanding earth-working activities associated with ground stone tools. Applying our results to analysis of archaeological counterparts will add additional lines of evidence to evaluate the importance of farming and construction activities in Neolithic and Bronze Age subsistence systems.

Morphological changes in starch grains after dehusking and grinding with stone tools

Research on the manufacture, use, and use-wear of grinding stones (including slabs and mullers) can provide a wealth of information on ancient subsistence strategy and plant food utilization. Ancient residues extracted from stone tools frequently exhibit damage from processing methods, and modern experiments can replicate these morphological changes so that they can be better understood. Here, experiments have been undertaken to dehusk and grind grass grain using stone artifacts. To replicate ancient activities in northern China, we used modern stone tools to dehusk and grind twelve cultivars of foxtail millet (Setaria italica), two cultivars of broomcorn millet (Panicum miliaceum) and three varieties of green bristlegrass (Setaira viridis). The residues from both used and unused facets of the stone tools were then extracted, and the starch grains studied for morphological features and changes from the native states. The results show that (1) Dehusking did not significantly change the size and morphology of millet starch grains; (2) After grinding, the size of millet starch grains increases up to 1.2 times larger than native grains, and a quarter of the ground millet starch grains bore surface damage and also exhibited distortion of the extinction cross. This indicator will be of significance in improving the application of starch grains to research in the functional inference of grinding stone tools, but we are unable to yet distinguish dehusked forms from native.

RESIDUE ANALYSIS OF GRINDING STONES FROM CHALCOLITHIC GÜLPINAR

This study presents the preliminary results of residue analysis of grinding stones recovered from the Early Chalcolithic 2 and Middle Chalcolithic period settlements (Gülpınar II and Gülpınar III) in the Sanctuary of Apollo Smintheus (Smintheion), located in the southwestern corner of the modern Biga Peninsula (Ancient Troad) in north-western Anatolia. The Early Chalcolithic 2 period settlement at Gülpınar II has been dated to 5320-4940 BC, while the Middle Chalcolithic period settlement at Gülpınar III superimposing it has radiocarbon dates ranging between 4930 and 4450 BC. Excavations at Chalcolithic Gülpınar between 2004 and 2014 revealed a total of 453 ground stone tools. This work in this context residue analyze of total of 28 grinding stones that were uncovered from these two Early Chalcolithic 2 and Middle Chalcolithic cultural levels. Chemical analysis of residue on stone tools has become a common research technique used in archaeology science. Chemical residues in and on the working surface of used grinding tools lead us to consider the context of the tool usage. The widely-used Gas Chromatography–Mass Spectrometry (GC-MS) method was selected for analyses of the grinding stones from Chalcolithic Gülpınar. The chemical analysis and preliminary results obtained from Gülpınar samples are outlined in this study. Results show evidence of the distinctive lipid organic residues pentacosane and heptacosane as minor and trace constituents in some of the essential oils of edible crops and the major fatty acids of octadecanoic (stearic) and palmitic (oleic). Palmitic acid is also a major component of the oil found in dairy products and abundant in animal fat. These results may contribute to approaches that aim to explain how prehistoric societies carried out processing of organic and inorganic raw materials.

Breaking the Mold of Natufian Basalt Mortars: Experimental Production and Archeological Implications

This paper presents an experimental study on the production of basalt mortars, common at Levantine Natufian sites (15,000–11,500 cal. BP). An increase in the gathering and processing of plant foods is among the Natufian cultural innovations preceding the Neolithic agricultural revolution, as documented in “agricultural” tools such as sickle blades and ground stone tools (GST). Studies of Natufian GST have focused on their typology and function; production methods are rarely discussed. We present 15 systematic experiments focusing on two methods—drilling and carving—and using a variety of techniques (bow/twist/pump/hand drilling, pecking, and battering) and tools. Our results demonstrate that drilling techniques are efficient only in the initial stages of depression preparation and only for a limited duration. Pecking and battering with a hand-held basalt chisel was found to be the preferable production method, allowing for longer, continuous working time, and producing deeper and larger depressions than other techniques. In addition, pecking and battering makes it possible to produce a complete mortar—from the initial depression to modification of the interior and exterior faces. We suggest that producing a Natufian basalt mortar takes only 5 h and produces specific waste products, and that such repetitive work causes severe pain, particularly to the elbow and palm of the working hand, which may be associated with the variety of physical deformations reported for male Natufian and Neolithic populations.

Ground stone industry from Pericei-Keller tag. A secondary production centre?

This article analyses ground stone discoveries from the late neolithic site of Pericei located in north-west of Romania, in Șimleu Depression. Combined characteristics of chisels and adzes in working process are discussed along with their context, especially those connected to stone working: the layer, dwellings and pebble agglomerations. We conclude that Pericei was a production center for stone chisels, appeared to supply the demand that until then was satisfied by Suplac/Porț site that continued to produce ground stone tools for a longer period.

Le sommet de l’iceberg ? Colonisation pionnière et néolithisation de la France méditerranéenne

Recent research into the European Neolithisation process and the development of farming communities reveals a diverse and complex cultural landscape. In the Western Mediterranean, it is now well known that the first agro-pastoral economy appears around 6000 BCE in south-eastern Italy and that part of these sites, often grouped under the generic term “Impressed Ware”, represent the departure point for the diffusion of the Neolithic economy. In this context, its rapid dispersal towards northern Italy and southern France is now interpreted as part of a pioneering colonization based on the use of maritime routes and preceding of several centuries the expansion of the Cardial culture. In southern France, archaeological settlements that make it possible to characterize this early stage of the Neolithisation process are still rare and do not have an equal value. The new discovery of an Impressa implantation at the site of ZAC de la Farigoule 2 (Aubord), in the Mediterranean Languedoc, gives us the opportunity to consolidate our knowledge about this major historical phenomenon. Despite its limited size, this site provides a rich set of data : domestic structures, pottery production, flint and obsidian industries, ground stone tools… The technological and typological characteristics of the pottery and the flint industry can be clearly assigned to the Impressa facies (Arene Candide-Caucade-Peiro Signado style). La Farigoule 2 is therefore an undeniable testimony to the establishment of a group linked to the agro-pastoral communities of the Italian peninsula. It is not possible to discuss in length the nature of the occupation on the basis of the deposits provided by the excavation. Nevertheless, the indirect evidence of cereal farming (sickle blades), the diversity of craft activities, the domestic structures, the identification of potters' tools, all these data are consistent with the image of a permanent occupation. Local resources are exploited : siliceous raw materials, clay soils and hard rocks. However, the use of products acquired several hundred kilometres away reinforces the hypothesis of the pioneering displacement of human groups taking with them their technical, economic and cultural background. Discussed in the broader scale of southern France and western Mediterranean, these new data allow us to consider fundamental issues raised by this pioneering colonization process. Important spatial discontinuities are observed in the distribution of these settlements, although this phenomenon seems to concern the entire Western Mediterranean. Nevertheless, the discovery presented in this paper should encourage us to consider a perhaps higher density of sites. It should also lead us to question our ability to detect these settlements. Concerning the natural and cultural factors that determine the settlement patterns of these Impressa groups, they are still in discussion but the scarcity of the paleoenvironmental data (position of the shoreline, vegetal landscape) restricts argumentation. Another issue is the future of these pioneering groups and their impact on the overall Neolithisation process in the South of France and possibly in Mediterranean Spain. In a large part of Southern France, one can observe a real chronological hiatus between sites with Impressa facies and those from the Cardial. Without ruling out the possibility of a taphonomic bias, this situation could be related to the model of micro-breaks observed elsewhere in the Neolithic diffusion in the Mediterranean at different periods. Finally, the analysis of the material productions of these pioneering groups illustrates complex socio-cultural dynamics that we still need to unravel. While the temporal dynamics of the diffusion of the "Neolithic package" (farming economy, pottery,…) across the western Mediterranean seems to be well understood, the chronometric, social and cultural framework needs to be considerably refined. In this perspective, further works on this important stage of Neolithic history, particularly through the discovery of new sites, is a major challenge for future research.

KALKOLİTİK GÜLPINAR TAŞ AĞIRLIKLARININ İŞLEVİNE YÖNELİK ÖNERİLER

The Early Chalcolithic 2 (Gulpinar II) and Middle Chalcolithic period (Gulpinar III) settlements identified at Smintheion (Sanctuary of Apollo Smintheus) in the southwestern corner of the modern Biga Peninsula (ancient Troad) in north-western Anatolia have revealed new evidence regarding ground stone tool typology. Evaluation of the ground stone tool assemblages from these two consecutive Chalcolithic phases at Gulpinar have resulted in identification of a unique class of tools that could be considered as stone weights or net sinkers. Such tools were previously unknown in the archaeological record of northwestern Anatolia. This assemblage of ground stone tools is examined here via ethnographic analogy based on parallels with North America and Oceania, where they were mainly classified as sinkers for fishing lines and nets. The function of these tools is controversial because they have often been identified as loom weights or miscellaneous objects in studies of western Anatolian archaeology because direct evidence for fishing gear is relatively scarce. For the first time, these Chalcolithic Gulpinar stone weights, found in situ along with a pile of shells, support the opinion of them being used as net sinkers. Beside ethnographic analogy, other examples reported from various sites in the Near East, Aegean, and Anatolia were also examined in order to explain the function of these ground stone tools. This study also proposes that the sinker stones of Chalcolithic Gulpinar could be added to Anatolian ground stone typology. It is hoped that these tools will contribute to our understanding of long-term conventions in the fishing methods of prehistoric people and in the functional use and variability of these objects.

The ground stone industry from Pericei-Keller tag. A secondary production centre?

This article analyses ground stone discoveries from the late neolithic site of Pericei located in north-west of Romania, in Șimleu Depression. Combined characteristics of chisels and adzes in working process are discussed along with their context, especially those connected to stone working: the layer, dwellings and pebble agglomerations. We conclude that Pericei was a production center for stone chisels, appeared to supply the demand that until then was satisfied by Suplac/Porț site that continued to produce ground stone tools for a longer period.

Scapulae for shovels: Does raw material choice reflect technological ease and low cost in production?

Earth-working spades were crafted from bone, stone, and wood in preindustrial societies. In the early Hemudu culture (7000-6000 BP) in eastern China, bone, particularly wild water buffalo scapulae, was preferred for crafting spades to modify the margins of wetlands for cultivation and occupation. Experimental and ethnographic research show that earth properties in the area adequately explains why wooden spades were less common; however, preference for bone spades over stone spades requires explanations beyond techno-functions during use. This paper identifies potential factors during the manufacturing procedure that might have encouraged the development and persistence of the scapular spade tradition. Replication experiments reconstructed the manufacturing procedure of the Hemudu scapular spade in comparison to that of a groundstone equivalent. The results showed that the manufacture knowledge was sophisticated for bone as well as for stone. However, the adequate level of know-how for successful production was lower for bone. Surprisingly, the costs in time and manufacturing tools for crafting a good enough bone tool were higher than those for a stone counterpart. In fact, the manufacture of bone tools involved the use of advanced groundstone tools. Overall, the Hemudu tool producers appear to have made their technological choices based on traditional conformity as well as resistance to motor skill adjustment rather than comprehensive cost-benefit assessment. The persistence of the scapular spade tradition led to increased investments into sophisticated modifications to cope with increasingly arduous earth-working tasks and likely led to increased investment into raw material procurement when bone raw materials became scarce. The results also suggest that technological ease and manufacturing costs in tool production should be evaluated carefully within the behavioral contexts, while taking into account that implements crafted from a variety of raw materials were employed in manufacturing the tool and that the costs and benefits in production are not equally perceivable to decision makers.

A review of the relationship between Pyeonggeo-dong site and Sinigai culture of Maritime Province

It has been discussed that Pyeonggeo-dong site has the Northeastern factor but the characteristics of potteries are closed to the c factor, and the native ‘Pyeonggeodong double-rimmed pottery’ were dominated. However, some potteries of BAL styled pottery as well as pot styled pottery that were characterized by its rim of pottery, made of the same techniques, were found. There are BAL styled pottery and pot styled potteries that were not made with folded rim of pottery and attached clay ribbon. In addition to these potteries, not- doble rimmed pot typed pottery, little pottery, beak styled stoneware, chipped stone hole, polished stone knife, oval pestle, disk styled stoneware, etc. are the main factors found in Sinigai culture of Maritime Province. I believe that the reason why Pyeonggeo-dong is considered as the filiation of the Sinigai culture of Maritime Province is because that Sinigai culture has been not well known. Therefore, I want to review that culture in this paper. Sinigai culture has been studied only for its regional boundary and characteristics. However, it is needed to review the chronological change of the potteries and start period of the culture and then compare to Pyeonggeo-dong site. Sinigai culture can be divided in to two types in each region, the West and East, based on chronological order and artifacts. The West 1 type had lasted from 3,400 to 3,200 years ago when people still used Neolithic potteries and started to make MOOMOON pottery. DOLDAEMOON pottery with pattern neolithic, one handle pottery, big pottery, polished stone dagger, polished stone ax, stoneware shaped star, disk styled stoneware, chipped stone hole, etc. were used at the same timew. The West 2 type lasted from 3,200 to 2,500 years ago. This is dwelling pit of square-shaped fire pot with stone and foundation in HARIN site. DOLDAEMOON pottery with pattern neolithic, pot withwith pattern neolithic on the surface, one handle pottery, BAL styled pottery, pot styled pottery, bottle styled pottery etc. are MOOMOON pottery. There are difference in their types based on the length of rim and neck in pot styled pottery and bottle styled pottery. In terms of the stone tools, there are oval pestle, stoneware shaped arrow, polished stone spear, polished stone knife, disk styled stoneware, chipped stone hole, etc. The East 1 type had lasted from 3,300 to 3,000 years ago. The symbolic potteries of this type are pot styled pottery with folded rim of pottery, BAL styled pottery with attached clay ribbon Knapped stone tools had been continuously used while the ground axe were appeared. The East 2 type lasted from 3,000 to 2,500 years ago. When it comes to dwelling pits, there are 3 rectangular fire pit, with foundation, and 4 lined pillar holes on the ground. notdoble rimmed pot styled pottery and bottle styled pottery are also found. People used various ground stone tools including stone axe, stoneware shaped arrow, stone arrow, polished stone spear, polished stone knife and etc. in addition to the knapped tools. BAL and pot styled pottery of doble rimm wth clay ribon, pot typed pottery with folded rim, and smaller potteries are related to the East 1 type of Sinigai culture. not-doble rimmed pot styled pottery rectangular mano, polished stone knife, chipped stone hole, etc are the factor of the West 2 type of Sinigai culture. Therefore, is can be considered that the material culture of Pyeongggeo-dong is combined with the East 1 type and the West 2 type of Sinigai culture. It is assumed that the Sinigai culture came to the west Gyeongnam Provinec continuouly from about 3,300 years ago until the second type that includes bronze artifacts. On the other hand, Daepyeong site located alongside of the Nam river has Gokok bronze which can be the earlier than Korea Liaoning bronze dagger. It is possible that the Gokok bronze was also a remain of Sinigai culture.

Middle Palaeolithic Percussive Tools from the Last Interglacial Site Neumark-Nord 2/2 (Germany) and the Visibility of Such Tools in the Archaeological Record

Despite a strong increase in the research on hominin percussive tool use, the primary focus in the study of technological behaviour still lies on flaked stone artefacts, especially for the Middle Palaeolithic. This paper aims to contribute to a more thorough understanding of the full spectrum of homi;nin technological behaviour, by presenting a systematic analysis of ground stone tools from the Last Interglacial Middle Palaeolithic site Neumark-Nord 2/2 (NN2/2) (Germany). At NN2/2, coarse gravel- and cobble-sized pieces (n = 351) were sourced from local outcrops of glacial deposits, with a preferential selection for quartzite and sandstone. Low-power use wear analysis and the archaeological context of these finds provide evidence for the possible use of at least 58 pieces for active (hammerstones) and 5 for passive (anvils) percussive tasks, specifically lithic production and potentially bone processing. These grounds stone tools are larger and heavier than the manuports. The hammerstones were preferentially made of quartz and quartzite, while the anvils are mostly of limestone. The limited build-up of use wear on the tools is interpreted as expedient use. The presence of post-depositional surface modifications, their relatively expedient use and their potential application on soft contact materials (e.g. nuts) resulted in a relatively low discernibility of the wear. With expediency being a key factor in Middle Palaeolithic lithic technology, we can expect comparable patterns for other similar-aged ground stone assemblages. Moreover, external factors, like geological context and raw material availability, post-depositional conditions and research focus and intensity, further contribute to the invisibility of such finds in the Middle Palaeolithic record.

North American grooved-axe replication: A taphonomic experiment in central Connecticut

Taphonomic experiments in lithic technology have been used to understand many facets of the archaeological record including site-formation processes, artifact displacement, and wear damage. The North American grooved-axe - an artifact type of which little technological attention has been given in the literature - is examined as a case study for a taphonomic experiment conducted in Central Connecticut. The use of an actualistic taphonomic experiment is used to generate an analogous experimental signature for archaeological grooved-axe manufacturing areas in North America. More specifically, the taphonomic experiment is used here to see if the isolated technological stage of impaction is archaeologically visible before short-term formation processes affect the manufacturing area in question. Impaction is a ground stone tool manufacturing technique that is otherwise known as pecking or hammer-dressing. Hypothesized archaeological traces of impaction include the recovery of flakes with macroscopic impaction wear and a lens of impaction slurry that is both visibly and texturally distinct. In addition to generating an experimental analogue for grooved-axe impaction, the replicative dimension of the taphonomic experiment is used to informally assess the plausibility of certain technological decisions in axe manufacture. Here, the use of quartzite impaction tools and expedient anvils in the production of North American grooved-axes are scrutinized.

Grinding cereals and pulses in the Neolithic site of Kleitos: an experimental investigation of microconglomerate grinding equipment, final products and use wear

Stone grinding tools (i.e. querns or grinding stones / millstones / metates and handstones or grinders / upper milling stones / manos) constitute an important part of the material culture recovered in prehistoric excavations. These implements, as well as the technological category in which they are traditionally attributed, known by the generic term ‘ground stone tools’, and by the more recently proposed term ‘macrolithic tools’, received the interest they deserve not long ago, through specialized studies.