Characterisation of archaeological mortars from Pompeii (Campania,Italy) and identification of construction phases by compositional data analysis

This work describes the compositional characterisation of coccciopesto and natural pozzolanic mortars sampled in the Regio VI area of the archaeological site of Pompeii, with particular reference to the Casa di Pansa in Insula 6 and Casa 17 in Insula 2. Samples were studied by optical microscopy and analysed by XRF, SEM-EDS, LA-ICP-MS and XRPD. The XRF and SEM-EDS data, subjected to multivariate analysis (cluster analysis), identified the three main construction phases involved in building the Casa di Pansa. In addition, mineralogical and petrographic characteristics of the aggregate were determined and found to be compatible with pyroclastic deposits from the volcano Vesuvius. Study revealed C–S–H phases in the binder, due to pozzolanic hydration phemomena of hydrated lime with cocciopesto and natural pozzalana.     

FIRM PRODUCTIVITY AND INSTITUTIONAL QUALITY: EVIDENCE FROM ITALIAN INDUSTRY

This paper aims to contribute to the debate on the determinants of differentials in firms’ productivity. We test the hypothesis that macro factors, especially the quality of local institutions, play a central role in explaining firm productivity in Italy. To this end, we construct measures of Total Factor Productivity (TFP) for about 4,000 firms by means of different estimation techniques, and a province‐level index of institutional quality. Then, we estimate the relationship between institutional quality and firm‐level TFP. Our results show that the existence of better local institutions might help firms to become more productive.     

Stone tools for the hunt: points with impact scars from a Middle Paleolithic site in southern Italy

We present the find of impact scars on six Middle Paleolithic points from the rock shelter site of Oscurusciuto in southern Italy, dated to MIS 3. We review our knowledge of hunting weapons in the European Middle Paleolithic, the available evidence for the use of Mousterian points as spear tips and the interpretations of impact scars. Our identifications are based on comparisons to similar scars observed on experimental material and archaeological material of known function, made of the same raw materials (cryptocrystalline varieties of silica) as the points from the Oscurusciuto site. The scarce evidence available prior to our work suggested that at least some Mousterian points were used to tip hand-delivered spears already by MIS 6 (i.e. between 186 and 127 ka). The evidence from Oscurusciuto confirm that Neanderthals in Western Europe sometimes used Mousterian points to tip spears to hunt large and medium size mammals, like the fauna present at the Oscurusciuto site. The significance of this sample is not diminished by its small size, as indicated by a discussion of the factors that influence the frequencies of impact scars in different archaeological samples and a review of comparable evidence from residential sites of similar and younger ages.     

A spotted hyaena den in the Middle Palaeolithic of Grotta Paglicci (Gargano promontory,Apulia, Southern Italy)

The Palaeolithic sequence of Grotta Paglicci (Gargano promontory, Apulia, Southern Italy) is one of the most important in the Mediterranean area: It comprises the whole Upper Palaeolithic cultural sequence known for the region, as well as Early Middle Palaeolithic and Lower Palaeolithic levels. These earlier phases are best represented in a collapsed room located outside the present-day cave (the so called “external rock shelter”). In this area, a new excavation, started in 2004, brought to light Middle Palaeolithic animal remains associated with evidence of spotted hyaena (SU 64 and 53). The spatial distribution analysis of remains from SU 53 revealed the presence of a bone accumulation area and a wider dispersal of hyaena coprolites. Three main ungulate species (aurochs, fallow deer and red deer) as well as carnivores (spotted hyaena, wolf, fox, wild cat and lynx) and lagomorphs have been identified. The majority of aurochs remains are located in the main accumulation; among these specimens, a complete metatarsal connected with three tarsal bones has been found; a talus and a complete tibia, probably belonging to the same limb, have also been identified. The multidisciplinary study carried out in this paper highlights a specific bone accumulation and scattering pattern in a spotted hyaena (Crocuta crocuta) den. In addition, taphonomy of lagomorph remains indicates the presence of other depositional agents.     

Investigating links between ecology and bifacial tool types in Western Europe during the Last Glacial Maximum

We apply Eco-Cultural Niche Modeling (ECNM), using the Genetic Algorithm for Rule-Set Prediction, to reconstruct the ecological niches exploited by Middle Solutrean and Upper Solutrean populations during the latter stages of Heinrich Event 2 and the early part of the Last Glacial Maximum, respectively. We focus on the Upper Solutrean technocomplex and its regionally distinct styles of hunting weaponry to investigate whether regional cultural variability reflects a link between material culture and ecology. Our analytical approach uses archaeological and geographic data in conjunction with high-resolution paleoclimatic simulations and vegetation reconstructions for the two climatic phases in question. Our results indicate that cultural choices behind the production of specific projectile point types have at some level an ecological basis and are linked to particular environments. We also find that the identified pattern of Upper Solutrean territoriality has an ecological foundation, but that its stylistic expression in the variation of diagnostic armature types is likely a byproduct of cultural drift. We argue that ECNM is an effective means with which to evaluate the paleoecological pertinence of archaeologically defined artifact types and to identify the ecological and cultural mechanisms underlying material culture variability.     

Toothpick use among Epigravettian Humans from Grotta Paglicci (Italy)

This paper deals with two teeth (an upper right M1 and an upper right dM2) from the Epigravettian found in the site of Paglicci (Southern Italy) showing interproximal grooves that are situated below the crown, on the root walls just apical to the cementum–enamel junction. These grooves have been examined on a digital microscope which displays 3D images of the analysed surfaces. The images obtained made it possible to interpret these interproximal grooves as tooth picking activities that can be interpreted as an attempt to alleviate sore gums. The comparison with experimental images from available literature made it possible to form hypotheses concerning the nature of the probes that might have been used by the humans. Copyright © 2014 John Wiley & Sons, Ltd.