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Luciana Migliore, Nicoletta Perini, Annamaria Alabiso
May metagenomics disclose the hidden secrets of the ancient damaged parchments?

The use of microbiological high-throughput molecular methods allowed an unprecedented level of knowledge about the microbial responsible for parchment deterioration and their dynamics. The aim of this study discussed how metagenomics helped to get insights into parchment biodeterioration so far, but also to get a perspective of their possible future use in the study and preservation of an important part of our cultural heritage.

Margherita Cantelli, Alberta Facchi, Francesca C. Izzo, Elisabetta Zendri
Characterization of Etruscan non-vascular ceramic fragments

This work focuses on the importance of Archaeometry aiming at defining some archaeological uncertainties concerning the use of distinctive materials. More precisely, the goal of this study is the interpretation of spectroscopic and thermogravimetric data, as well as water absorption measurements, for the characterization of non-vascular ceramic fragments found in two different Etruscan settlements dated back to 6th-4th century BC and situated in the Po Delta region (San Basilio di Ariano nel Polesine and Adria – Rovigo, Italy). A multi-analytical approach was applied in order to clarify the role of these ceramic findings, which were supposed to be building materials used to cover house walls, as internal or external plasters.

Alice Lucchini, Mauro Bernabei
The tree species of Po valley Logboats

Logboats are present on many continents. Despite being made of a tree-trunk, they cannot be simplified to only one building tradition. In Italy, the main studies usually list the findings, but we lack knowledge about the timber and the vessel construction. In our study, 16 logboats, for a total of 69 samples, were analyzed to identify the tree species used in the different parts of the boats. Different tree species were identified, including oak (Quercus sp.), chestnut (Castanea sativa), and elm (Ulmus sp.). We found dogwood (Cornus mas) and willow (Salix sp.) in treenails, and in some cases, we detected the use of pieces of bark and phloem. Long believed to have been dug out from a single tree, our results demonstrate that these logboats also contain components made from woods different from the main hull. Thus, the traditionally accepted nomenclature seems inappropriate and likely to confuse research efforts.

Nicoletta Martinelli
Multicentennial regional oak chronologies for northern Italy: an updating

The Author describes the construction of 3 regional chronologies based on crossdated tree-ring series from woods coming from archaeological sites in north-eastern Italy. The series have been dendrochronologically crossdated and the chronologies dated by 14C wigglematching. Two of them belong to prehistory: the time span of GARDA 1 is 2204-1829 ± 10y. cal BC and the time span of GARDA 3 is 1897-1678 ± 14y. cal BC. The early medieval chronology VENETO 1 spans the period 447-773 ± 21y. cal AD. They allow to date exactly building activities on the Bronze Age pile-dwelling villages in the region of the lake Garda and the Early Medieval land-reclamation structures in the Lagoon of Venice and the Venetian plain.

Valeria Stagno, Sveva Longo, Silvia Capuani
Effect of age on Pine wood microstructure studied by micro-MRI and diffusion-NMR

Wood is a natural complex material widely used from men in the past to create artworks. One of its main anatomical elements is the annual ring that varies according to the species, the weather conditions under which the tree has grown and to possible adversities. To observe the anatomy of waterlogged archaeological wood could be complicated because of its degradation. However, knowing the state of conservation is very important for the future restoration. In this work a non-destructive approach based on the combined use of MRI and diffusion on the modern and ancient pine wood is presented. Micro-MR images allow to observe the diagnostic features. The molecular NMR diffusion analysis, with the estimation of the pores diameter and the tortuosity, provide important information about the effect of age on the wood microstructure. At the end of the analysis the unaltered sample can be repositioned in its original location on the artwork.

Rodica-Mariana Ion, Radu Setnescu, Tanta Setnescu, Anca Irina Gheboianu, Gabriel Vasilievici, Sorin Tincu
Thermoluminescence dating and microstructural characterization of archaeological ceramic samples from Corvins Castle area

Some ceramics samples from Corvins Castle area - Coart Area, in different weathering stages, have been analyzed in this paper by different analytical techniques: XRD, thermal analysis (TG, DTG), porosity and thermoluminescence (TL) dating. For identification of the technology employed in the pottery production, the firing temperature could be determined through the presence of some minerals (evidenced by XRD), quartz and calcite being the most important ones. Crushed calcite is a good indicator, because it is present in the ceramics which have been tired up to 750° C (under oxidized atmosphere). By TL the nature of the crystalline network could be detected, ceramics consist of a number of crystalline inclusions (mainly quartz and feldspar) embedded in the ceramic matrix. The peak related to 343° C is always found in quartz. The date obtained by TL technique was in good agreement with the date assigned by archaeologists.

M. Fugazzotto, A. Stroscio, A. Bertino, G. Barone, A. Russo, P. Mazzoleni
Petrographic analysis to understand Etruscan architectural terracotta's technology and provenance: a study in progress.

Painted architectural terracotta fragments, presumably belonging to the ancient archaeological site of Caere (Cerveteri), dated back to 530-480 B.C., have been analysed by petrographic observation in order to scientifically assess the provenance hypothesis and, contemporarily, improve our knowledge regarding the manufacture technology on this kind of remains. The samples under study have been retrieved in 2016 during an investigation of the Comando Carabinieri Tutela Patrimonio Culturale on the international illegal trade of archaeological artefacts. A huge amount of fragmentary ceramic materials came back in Italy and started to be investigated by non-invasive analysis that gave interesting clues, mainly regarding painting techniques and colour palette, individuating the compatibility with the Etruscan sites. The good chemical homogeneity of the slabs made essential the petrographic investigation, of which we show here the preliminary results, obtained also by the comparison with reference materials of certain Etruscan origin and by the pyroxene s chemical composition investigation.

Stefano Pagnotta, Giulia Buono, Marco Lezzerini, Alexia Pavan, Carlotta Rizzo
The pottery production at Sumhuram (Khor Rori, Sultanate of Oman): an archaeometric study

The aim of this paper is to present the preliminary results of the archaeometric characterization of a particular pottery production in the settlement of Sumhuram, in the area of Khor Rori (Sultanate of Oman), the easternmost port of ancient the caravan kingdoms, along the southern coast of Arabia (2nd cent BC – 5th cent AD). The inhabitants of Sumhuram provided to their needs through several local productive activities, as indicated by the presence of kilns and furnaces used for different purposes. In the past, few studies speculated, and partially demonstrated, the possible occurrence, at Sumhuram, of a local pottery manufacturing; however, no kilns were ever found until recent years. In 2015, archaeological investigations unveiled the first clear evidence of a local prottery production at the site through the discovery of a pottery kiln and some production wastes inside the city wall. The furnace discovered in Sumhuram is the only one suitable for firing pottery in the whole southern Arabia in pre-Islamic period. Twenty-two potsherds from the productive area have been analysed with micro- and macro-photo, and thin sections, in order to illustrate the development of the whole pottery cycle, from the treatment of the raw materials to the final products.

Vittoria Guglielmi, Paola Fermo, Martina Andreoli, Valeria Comite
A multi-analytical survey for the identification of the red and yellow pigments of coloured sherds discovered in the Monte d'Oro area (Rome).

The aim of the study was the characterisation of the pigments utilised on the painted sherds found during an excavation performed by the Soprintendenza Archeologica and just approximately assigned to a historical period between the first century B.C. and the first century A.D. The analytical survey here presented meant to provide archaeologists with useful information on the painting materials to better contextualise the findings from an artistic and historical point of view. The investigation procedure comprehended the use of SEM-EDX technique and Raman, infrared and visible reflectance spectroscopies, paying most attention to portable instrumentation diagnostic performances. The study carried out on a selection of the red, and yellow sherds highlighted the presence of cinnabar, litharge, red and yellow ochre also blended among themselves or possibly utilised overlapping more painting layers. Furthermore, it is to notice the presence of gold decorations on some fragments that denotes certain care for details and opulence in the adornment.

Michela Ricca, Marco Ricci, Stefano Laureti, Mauro Francesco La Russa
The role of geosciences and non destructive methods in the TECTONIC project

TECTONIC project promotes a collaboration among several professionals (i.e. archaeologists, conservator, geologists, engineers, etc.) working on different topics related to the Underwater Cultural Heritage (UCH), to find solutions to the issues still existing in the field. One of the main aims of the project is the exchange of skills for the study and assessment of innovative materials for the conservation of the UCHs, sustainably. To achieve this goal, several activities, analytical investigations and laboratory tests have been planned to be carried out on archaeological and historical materials coming from three underwater pilot areas, selected in the Mediterranean and Atlantic sea. Specifically, in this work the main stages that will be conducted are: a) study and characterization of archaeological/historical materials; b) laboratory and in situ experimentation for developing a conservation strategy against the biofouling; c) development of marketable products. This paper show the detail of each of the abovementioned stages, with a close look also at non destructive testing methodologies.

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