Neolithic and Chalcolithic stone tools used in ceramics production : Examples from the south of Romania

This paper focuses on Neolithic and Chalcolithic stone tools found at the Măgura ‘Buduiasca’ and Vităneşti ‘Măgurice’ sites in southern Romania, which might been involved in the chaîne opératoire of ceramic pottery production. To better understand how ceramic objects were made during this period, it is important to know what tools were available. Representative artefacts were selected from the sites and have here been grouped based on their possible involvement in various stages of pottery production: a) quarrying of the raw claystone (picks); b) processing the raw materials (mortars and pestles); and c) surface finishing (smoothers, burnishers, polishers). The surface of the tools was examined by non-destructive methods (handheld loupe, stereomicroscope) with the aim of further determining their function and whether they were likely used in the ceramics industry. This study provides examples of specific Neolithic and Chalcolithic stone tool types and illustrates characteristics useful for identifying their use. It also shows the possible chaîne opératoire of pottery produced during the Neolithic and Chalcolithic in the area of southern Romania. It is considered that most of these tools categories, and likely most of the individual tools themselves, had multiple uses, or similar uses with different materials in different industries. It is therefore difficult to determine with much certainty whether they were only used within the ceramics industry.


Introduction
The production of ceramic pottery involves numerous steps, each of which requires different tools.Many studies focus on pottery, sometimes as tools from a functional point of view, sometimes as cultural markers used to date sites, and sometimes from the point of view of the raw material of which they are composed.The steps involved in pottery production are often studied based on the remains of the pottery itself with only minor mention of the tools used in its production.
In the pottery chaîne opératoire, the pre-firing technological stages are important in obtaining good quality ware.The processing of the raw geological materials, i.e. clays and temper, necessitates specialised tools, some suitable for extraction from the pit, some for reducing the size of boulders resulting from excavation, and others for mixing.The final modelled object can be subject of surface treatment (e.g., smoothing, burnishing, and polishing) and decoration, all steps requiring special tools.
This paper presents an overview of tools with potential use in the production of ceramics during the Neolithic and Chalcolithic found at sites in Teleorman county (Lower Danube region, southern Romania) (Figure 1).Besides the stone tools, fragments of ceramic ware have been also found (Andreescu et al. 2009a;Andreescu et al. 2009b).A local production was assumed for the pottery, based mainly on the richness of sherds but no kilns have been found which were contemporary with the artefacts.Nevertheless, the wide range of stone tools, some highly specialized, found associated with pottery sherds arose the question if there is any connection between these tools and the pottery.The shape and the surface characteristics of the lithic tools were analysed by optical nondestructive studies (with hand loupe and stereo microscope) in order to determine their function and usage traces, respectively.These characteristics might support a possible use in certain stages of the chaîne opératoire of pottery production.

Archaeological context
In the southern part of Romania, along the Teleorman River (Figure 1), a number of prehistoric sites have been extensively excavated and numerous ceramic and lithic artefacts have been uncovered (Mirea 2005a;b) (Andreescu & Bailey 2005).
Among the investigated sites are Măgura 'Buduiasca' (including its 'Boldul lui Moş Ivănuş' component) and Vităneşti 'Măgurice' (Figure 1), located near to each other and stratigraphically covering an almost complete time span from the Early Neolithic to the Late Chalcolithic (Table 1) (Andreescu 2006;Andreescu et al. 2008b;Mirea 2009).The artefacts from this study include polishers, smoothers, mortars, grinders, and possible mattocks or hatchets from the Neolithic and Chalcolithic contexts.Presently the artefacts found here are housed at the Teleorman County Museum in Alexandria.
Table 1.Sites from Teleorman County indicating the cultures present at each (marked with an 'x').Note that none of the sites had Boian occupations.Ages according to (Andreescu 2006;Andreescu et al. 2008b;Mirea 2009).The Neolithic field settlement at Măgura 'Buduiasca' is located on the lower eastern terrace of the Teleorman River (about 300 m northeast of the current course of the river), about 1 km SE of the village of Măgura and 7 km NE of the town of Alexandria (Figures 1  and 2).'Boldul lui Moş Ivănuş' is a protrusion of a secondary terrace, located about 500 m ESE of the rest of Măgura 'Buduiasca', registered by the 'Southern Romania Archaeological Project' as a sector of the latter.Together they may also be referred to as 'Buduiasca-Boldul lui Moş Ivănuş'.Note that although some earlier reports and articles treat them as separate sites, they are currently considered to be a single site.

Period
The majority of the cultural remains found at Măgura 'Buduiasca' belong to the Late Neolithic Dudeşti culture, and include pit and surface houses, stone and bone tools, ceramic pottery, and anthropomorphic and zoomorphic sculptures.In addition to the Dudeşti materials, ceramics attributed to the Starčevo-Criş culture (phase III) and Vădastra culture (phase I) were also found, as well as possibly imported ceramics from the Karanovo III-Veselinovo Neolithic cultures.Various flint tools have been discovered at this site, in the Vădastra context (Andreescu & Bailey 2002;2004;2005;2006;Andreescu et al. 2003;Andreescu et al. 2001;Crandell 2013;Mirea 2005a;b;2009).
The settlement at 'Boldul lui Moş Ivănuş' is attributed to the Early Neolithic (Starčevo-Criş) as well as the Late Neolithic (Dudeşti and Vădastra cultures) (Table 1).There are also sporadic remains from later periods not covered in this study.Similar to the rest of the Măgura 'Buduiasca' site, a long sequence throughout the Neolithic has been documented here (Andreescu et al. 2007;Andreescu et al. 2009b;Andreescu et al. 2008a).There were many early Neolithic complexes found in this component of the site.Among the very early ones were several surface dwellings and pits.The artefacts were comprised largely of household waste.A few whole pots were found.The ceramics from the Late Neolithic contexts belong to the early phases of the Dudeşti culture (Andreescu et al. 2007;Andreescu et al. 2009b;Andreescu et al. 2008a).
Vităneşti 'Măgurice' is a tell settlement located about 7 km northeast of Alexandria (Figures 1 and 3).The tell is 40 x 45 m wide and 6.5 m high and is in a relatively good state of preservation.This site has been researched from 1993 until present (Andreescu 2006 Andreescu et al. 2009a;Andreescu et al. 2008b).The discoveries at this site are important as all three phases of the Gumelniţa culture (A1, A2 and B1) are present in the stratigraphy.The entire Gumelniţa B1 level, the last occupation layer, was uncovered, continuing the research with level A2.Surveys were also carried out to establish the stratigraphy of the settlement.The features at this site include surface dwellings, hearths and pits.Many artefacts have been discovered through excavations here.The artefacts are made from clay, flint and other rocks, bone, antler, copper and gold (Andreescu & Borțun 1995;Andreescu et al. 1996;Andreescu et al. 2009a;Andreescu et al. 2008b;Mărgărit et al. 2014).

Tool typology
The tools studied have here been grouped based on their possible usage in various stages of pottery production.We start with those which may have been used to quarry the raw clay, such as picks.We also describe tools such as mortars and pestles involved in processing the raw materialsparticular by coarse and fine grinding.Finally, we come to surface finishing tools.

Picks, mattocks, or hatchets
The earliest stage in the production of ceramics is the extraction of clay from the ground.For this purpose the prehistoric populations used various tools, such as picks, hammers, axes, diggers (Rosenberg & Gopher 2010;Wright 1992).Picks and hoes are used to extract of clay from the ground.They are often made of ground magmatic rocks or knapped chert.(See Figure 4 for examples.)Most of these type tools found at the study sites were fragmented.Due to the type of damage, along or originating from the leading edge, it is likely that they were damaged during use (Mirea 2005b).Grinding slabs and handstones Wright (1992), Hamon (2008b) and (Bassetti & Zamboni 1997) have outlined systems of classifying grinding and polishing tools based on function and form.Simplified versions of these classification systems will be used here.Wright (1992)  known as grinding stones or querns) as is the lower of two grinding tools.The grinding action takes place on a relatively flat plain or indented, near flat surface.As the name implies, these tools are involved primarily in grinding material and much less so in pounding it (compare this with the use of mortars described below.)Whereas grinding slabs are passive tools, handstones (also known as grinding stones or grinders) are the accompanying active tools for grinding materials on grinding slabs.They generally have a large grinding surface which may vary in how flat or convex it is (Wright 1992).They must be easily gripped in a person's hand and be easily wielded.They will show grinding marks on one or more faces.Both grinding stones are commonly found at sites around the world and are mentioned by various authors (for example, Kozlowski 1989;Özkaya 2009;Rosenberg & Gopher 2010;Simmons & Rollefson 1984;Wayessa 2011;Wright 1992;Zurro et al. 2005).
The artefacts looked at this study were often made of quartzite or sandstone (see examples in Figures 5 to 7).Although the primary purpose of most would likely have been for grinding cereals, they were likely also used to grind various other materials, including temper (sand, gravel, potsherds) or even coarse fragments of pigment ores.Wright (1992) describes mortars as the lower of two tools used for pounding and vertical rotary grinding.By necessity these tools have a deeper and more circular indent than grinding slabs and may be more bowl-like in appearance.Like grinding slabs, mortars are passive tools.Pestles are the active tools which accompany mortars.They may be used to crush (through striking or a rocking motion) or grind (through circular movement) a material in a mortar.These tend to be thinner (relative to their length) than grinding handstones and have a more rod-like appearance.Wear will be limited to one or both of the ends of the pestle.As pestles are used also for pounding, they may have flake scars near the striking faces.Also due to pounding, the working faces may have more peck marks than a grinding handstone.There may also be deeper and more circular indent than grinding slabs and may be more bowl-like in appearance.The faces themselves vary from flat to slightly convex or well rounded.Flat faces may have bevelled edges.Wear can often occur along the sides near the working faces due to materials being ground on the vertical inner sides of the mortar.These tools are also common at Neolithic sites from other regions such as the Near East (see for example, Mithen et al. 2005;Nadel & Rosenberg 2010;Özkaya 2009;Rosenberg & Gopher 2010;Wayessa 2011;Wright 1992;Wright 1994).doi:10.2218/jls.v3i1.1134Although grinding handstones and pestles have similar purposes and forms, their usage or function may be predicted based on a few characteristics.The size of the tools may indicate whether the tool was being used on a large or a small amount of material.The coarseness of the tools may also indicate how fine the resulting material had to be.Tools used to grind up sand or other materials for temper in the clay would likely be larger but not necessarily fine grained.Tools for grinding or crushing pigment might be smaller (since not as much material would be needed) but would need to be smoother.Of course, the tool would have to be harder than the material which it was breaking up.Pestles may be quartz, quartzite, chert or magmatic rock whereas mortars are often quartzite or sandstone.

Mortars and pestles
Several artefacts which appear to be mortars were found at the study sites (see Figures 8).They may have been used for pigment grinding by rubbing against a small slab ( Andreescu et al. 2008b;Mirea 2005a).Likewise, a handstone may have also been used to grind materials against a slab (Dal Sasso et al. 2014;Hamon 2008a;Šajnerová-Dušková et al. 2009).Chemical analysis may be able to detect traces of pigment on handstones (Domingo et al. 2012).

Burnishing stones and smoothers
Burnishing and smoothing are two very common methods of improving the appearance and functionality of ceramic vessels.Basically, smoothing helps in obtaining a more even surface of the ceramic objects by removing the rough parts and filling in the pits by using wet hand, cloth, grass, wool, pottery sherds, and others (Spaulding 1948;Valado 2008;Wayessa 2011;Zhushchikhovskaya & Shubina 2006).They may be used to burnish entire surfaces or to produce decorative patterns before firing.They are usually produced from quartz, quartzite, or chert.As burnishing and smoothing tools from these sites are the focus of another paper, they will not be dealt with here in detail.Examples from Măgura 'Buduiasca' are show in Figure 9.
Viewing the artefacts at 16 x magnification (or higher) through a stereomicroscope helped to indicate more about the type of usage (parallel or random scratches, crushed or pitted surfaces, and others), the intensity of use, and in some cases whether they were used against coarse or fine materials.Many of the polishing stones show parallel surface scratching consistent with the marks found on modern polishing stones (Crandell et al. 2012;Ionescu et al. 2015;Ionescu et al. 2012).(See Figure 10 for examples.)There were many pottery fragments which had been ground flat or slightly curved on one edge.It is presumed that they were used to smooth pot surfaces before firing.Figure 11 shows examples from Măgura 'Buduiasca'.Vuković (2013) also provides examples of this type of tool. Figure 12 illustrates how they would have been used.

Blades for decorating
Blades knapped from chert are common at almost all Neolithic and Chalcolithic (for examples, see Figure 13).Among their varied purposes, some were likely also used to decorate pottery by incisions or by pressing designs into the surface of soft clay (see for example, Khalaily & Kamaisky 2002).

Discussion
There are possibly other uses but this paper focus on their potential involvement in the ceramics industry.This article is intended to help other researchers to identify possible tools.By knowing what to look for and what might be present within artefact assemblages, the function and usage of artefacts may be identified.It should be kept in mind that many of these tools likely had other more than one function.This paper simply focused on those which might have been involved in the ceramics production.

Figure 6 .
Figure 6.Examples of possible grinding hand stones from Măgura 'Buduiasca'.Grinding and crushing marks are visible on the lower surface.

Figure 10 .
Figure 10.Parallel surface scratching consistent with the marks found on modern polishing stones.Examples from Măgura 'Buduiasca'.

Figure 12 .
Figure 12.Illustration of how a re-used ceramic sherd smoother would be used.
. Surface surveys were conducted by F. Florea in 1980, and by P. Mirea and Şt.Nedelcuţă-Apope in 2001.Subsequently, test excavations were carried out from 2001 to 2005 by R. Andreescu, D. Bailey and colleagues within the framework of the 'Southern Romania Archaeological Project'