Mediterranean Archaeology and Archaeometry, Vol. 18, No 5, (2018), pp. 179-189 Copyright © 2018 MAA Open Access. Printed in Greece. All rights reserved. DOI: 10.5281/zenodo.1285908 NEW INSIGHTS ON THE ARCHAIC ‘CORINTHIAN B’ AMPHORAE FROM GELA (SICILY): THE CONTRIBUTION OF THE ANALYSES OF CORFU RAW MATERIALS Claudio Finocchiaro1, Germana Barone1, Paolo Mazzoleni*1 and Grazia Spagnolo2 1Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Università di Catania. 2Dipartimento di Civiltà Antiche e Moderne, Università di Messina. Received: 15/11/2017 Accepted: 22/05/2018 *Corresponding author: Paolo Mazzoleni ([email protected]) ABSTRACT In this work we report the results of the analysis of clay and sand raw materials collected from the Corfu island (Kanoni area, Ionian Sea). The mineralogical, petrographic and chemical data were compared with those of some archaic „Corinthian B‟ amphorae (late 6th – mid 5th c.BC) found in the archeological excavations at Gela (Sicily), and with those of local common wares and tiles from Sibari (ancient Sybaris/Thurii), in southern Italy. Indeed, the „Corinthian B‟ transport amphorae, largely diffused in the Mediterranean basin during archaic and classical periods, are supposed to come from several possible centers, including mainly Corfu and Sibari. The combination of both chemical and petrographic investigations strongly supports the archaeological hypothesis of the presence of Corfu products among the archaic „Corinthian B‟ amphorae from Gela. KEYWORDS: Raw materials, Laboratory test, Corfu, „Corinthian B‟ amphorae, petrographic and chemical analyses. 180 C. FINOCCHIARO et al. 1. INTRODUCTION terized by a thickened rim, almost triangular in sec- tion, underlined by one or two ridges or grooves, a In antiquity the transport amphorae were used for spherical or ovoid body and a small conical cap toe shipping goods, principally wine and oil, and for (Figure 1b-c). Koehler attributed both forms to Co- this reason they are considered by modern archaeo- rinth but did not exclude the possibility of other mi- logists very important evidences of the ancient nor production sites: namely, an unidentified west- trades. However, in order to correctly reconstruct ern-Greek workshop for the archaic form and a the trade networks between ancient settlements, workshop in Corfu, following a previous intuition of scholars need to precisely locate the production sites V. Grace (1953), for the classical-hellenistic form. In- of the amphorae and, when possible, also to define deed, according to historical sources, Corfu (an- what type of products they contained. cient Kerkyra), a Greek island in the Ionian Sea colo- In her well-known classification of the Corinthian nized by the Corinthians, produced a good quality amphorae, Koehler (1978, 1981, 1992) distinguished wine in large quantities (Thuc. III, 70, 4; Xen. Hell. VI two different forms of the type B: i) the earlier one, 2, 6; Ath. Deipn. I, 33b) which was contained in the so dated from the VI to the early V century BC, marked called “Corcyrean amphorae” (“kerkyraioi amphoreis”: by an almond-shaped thickened rim, underlined by Ps. Arist. De mir. auscult. 104, 839b; Hesych. A 1201 an offset band, a turnip-shaped body and a beveled Latte). cap toe (Figure 1a); ii) the more recent one, dated from the V to at least the late III century BC, charac- a b c Figure 1. ‘Corinthian B’ amphorae: a) archaic form; b-c) classical form. From Koehler (1992). In 1983, the discovery of a pottery workshop in on all the coasts of the Ionian Sea, both in Greece and Corfu confirmed the existence of a local production in Albania, and in southern Italy (Spagnolo, 2002; of the more recent „Corinthian B‟ form (PrekaAlex- Barone et al., 2002, 2004, 2005; Sourisseau, 2011; andri, 1992), which, so, was also called „Corcirean‟ Gassner, 2011, 2015). In the latter, in particular, the (Kourkoumelis, 1992). However, this archaeological attention of the scholars has focused on the site of evidence did not rule out the possibility of other Sibari (ancient Sybaris/Thurii), since ancient sources production centers of the classical-hellenistic form attested the region to have a very rich local produc- (including Corinth itself) nor did it provide any in- tion of wine during the archaic and classical periods formation on the archaic form and on its origin. (Timaeus in Ath. Deipn. XII, 519d; Strabo VI, 1, 14; In the meantime, various chemical investigations Plinius N.H. 14, 39), and the image of an amphora (Farnsworth et al., 1977; Watson 1985; Jones 1986; was recorded onto an archaic Sybarite coin (Spagno- Oladipo 1987) did not obtain unequivocal and deci- lo, 2002). Chemical and petrographic analyses have sive results, but rather highlighted the difficulty of been carried out on some archaic „Corinthian B‟ am- distinguishing between ceramics from Corinth and phorae found in Sicily, at Gela (Barone et al., 2004) Corfu, because of their compositional affinities. Lat- and Messina (Barone et al., 2002, 2005), and the re- er, the remarkable petrographic study of Whitbread sults have been compared with those obtained from (1995) questioned whether Corinth could be in- local ceramics and tiles of Sibari (Barone et al., 2004). cluded among the production centers of both forms ICP-OES and ICP-MS data on amphorae from Gela of the type B, considering the great differences in and Messina, respectively, pointed out that some clay body preparation and in the manufacture be- amphorae had low concentrations in Ni and Cr that, tween these amphorae and the Corinthian type A, according to Jones (1986), Levi (1999) and Barone et certainly produced there. al. (2002), can be considered indicator of production Recent archaeometric studies have investigated areas located in southern Italy, rather than in Greece, the possibility of multiple workshops of the type B where these elements are generally richer. The pe- Mediterranean Archaeology and Archaeometry, Vol. 18, No 5, (2018), pp. 179-189 NEW INSIGHTS ON THE ARCHAIC ‘CORINTHIAN B’ AMPHORAE FROM GELA (SICILY) 181 trographic analyses of these samples confirmed the 2. GEOLOGICAL FRAMEWORK, existence of two groups of „Corinthian B‟ amphorae MATERIALS AND METHODS at Gela, the first one characterized by inclusions typ- ical of the Calabrian–Peloritan area (Amodio Morelli Corfu is the second largest island in the Ionian et al., 1976), possibly from the area of Sibari and the Sea, after Kefalonia, and geologically belongs to the second one consistent with the „Corinthian B‟ am- Ionian Zone, characterised by various sedimentary phorae from Greece classified by Whitbread (1995) deposits: i) Triassic evaporites and associated brec- as „fabric class 1‟(Corfu?). cias; ii) Jurassic to Upper Eocene carbonates and to a More recently, observations by reflected light mi- lesser degree cherts and shales; iii) Oligocene Flysch. croscope (Gassner, 2011) have been conducted on The cover of the Ionian Zone sequence is represented samples of both „Corinthian B‟ forms from Albanian by Miocene – Pliocene plastic mudrocks and marls coast and from Velia (southern Italy), and have sug- such as those sampled for the present study, located gested the existence of almost three production cen- near the archaeological site. The end of sedimentary ters in the Ionic-Adriatic region, among which prob- sequence consists of Quaternary alluvium (Savoyat and Monopolis, 1970). ably Corfu or Butrint. In this complex scenario, the purpose of this re- Different raw materials, such as clays and sands, search was to compare some specimens of archaic were collected from various points of the Kanoni area „Corinthian B‟ amphorae found at Gela with a set of in the eastern coast of the island. In particular, four clayey materials sampled in Corfu and some frag- clays (CORFU1A-4A) and three sands (CORFU1S-3S) ments of locally produced ceramics and tiles from were samples, respectively in the north and in south Sibari (Barone et al., 2004), to define their prove- of aforementioned area were sampled in the north nance. (Figure 2). Figure 2. Overview map of Ionian Sea and focus on the geological map (modified after Savoyat and Monopolis, 1970) of the sampling sector where the raw materials were collected (CORFU1A-4A and CORFU1S-3S) in the north part of Corfu island. The raw materials were analysed in terms of their clayey sediments and 10% of sandy sediment i) grain-size distribution, using a sieving method and (named CORFU#-10S). This ratio was chosen based gravitational sedimentation; ii) chemical composi- on microscopic observations of thin sections of the tion by X ray fluorescence (XRF); iii) mineralogical Gela amphorae (Barone et al., 2004). For the prepara- composition by X-ray diffraction (XRD). Afterwards, tion of the laboratory tests, we chose only one sam- four laboratory tests were prepared using 90% of the ple of sand (CORFU3S) since previous XRD and Mediterranean Archaeology and Archaeometry, Vol. 18, No 5, (2018), pp. 179-189 182 C. FINOCCHIARO et al. chemical analyses attested that they were similar in 2θ step size and a 4 sec count time, at 30 mA and 40 terms of composition. Each laboratory test under- kV. The presence of swelling clay minerals was de- went firing at different temperature (700, 800 and termined by treating samples with ethylene glycol at 900°C) in an oxidant atmosphere using a laboratory 60 °C for 12 h. muffle, with a temperature increase of 100 °C/hour XRF was performed using Philips PW 2404/00 and the maintenance of the maximum constant tem- spectrometer to determine concentrations of major perature for 12 hours (soaking time). Afterwards, and trace elements, on powder-pressed pellets, ac- they were investigated by optical microscopy (OM), cording to the procedure described in Barone et al. XRD and XRF at the Department of Biological Geo- (2014, 2012). The chemical analysis of laboratory logical and Environmental Science of the University tests was performed on the 900° C fired samples.