A new Palaeolithic discovery: tar-hafted stone tools in a European Mid-Pleistocene bone-bearing bed

Two stone flakes partly covered in birch-bark-tar and a third without tar on it were discovered in fluvial gravel and clay in central Italy, in association with the bones of a young adult female Elephas (Palaeoloxondon) antiquus and several micromammals. The probable chronology of the stone flakes is compatible with the late Middle Pleistocene suggested by the site's small mammals and geological context. The fauna indicates a cool stadial episode before isotope stage 6. That age means the flakes are the oldest ever found hafted with tar and indicate a greater capacity for late Middle Pleistocene hominins to utilize raw materials available during cold phases.     

Fracture-fill calcite as a record of microbial methanogenesis and fluid migration: a case study from the Devonian Antrim Shale, Michigan Basin

The Devonian Antrim Shale is an organic‐rich, naturally fractured black shale in the Michigan Basin that serves as both a source and reservoir for natural gas. A well‐developed network of major, through‐going vertical fractures controls reservoir‐scale permeability in the Antrim Shale. Many fractures are open, but some are partially sealed by calcite cements that retain isotopic evidence of widespread microbial methanogenesis. Fracture filling calcite displays an unusually broad spectrum of δ¹³C values (+34 to ?41‰ PDB), suggesting that both aerobic and anaerobic bacterial processes were active in the reservoir. Calcites with high δ¹³C values (>+15‰) record cementation of fractures from dissolved inorganic carbon (DIC) generated during bacterial methanogenesis. Calcites with low δ¹³C values (13C values between ?10 and ?30‰ can be attributed to variable organic matter oxidation pathways, methane oxidation, and carbonate rock buffering. Identification of ¹³C‐rich calcite provides unambiguous evidence of biogenic methane generation and may be used to identify gas deposits in other sedimentary basins. It is likely that repeated glacial advances and retreats exposed the Antrim Shale at the basin margin, enhanced meteoric recharge into the shallow part of the fractured reservoir, and initiated multiple episodes of bacterial methanogenesis and methanotrophic activity that were recorded in fracture‐fill cements. The δ¹⁸O values in both formation waters and calcite cements increase with depth in the basin (?12 to ?4‰ SMOW, and +21 to +27‰ PDB, respectively). Most fracture‐fill cements from outcrop samples have δ¹³C values between ?41 and ?15‰ PDB. In contrast, most cement in cores have δ¹³C values between +15 and +34‰ PDB. Radiocarbon and ²³⁰Th dating of fracture‐fill calcite indicates that the calcite formed between 33 and 390 ka, well within the Pleistocene Epoch.     

Food,conviviality and the work of mourning. The asado scandal at Argentina’s ex-ESMA

This article addresses a controversial debate raised by an asado-party, which was celebrated by the end of 2012 at the former Navy Mechanics School (ESMA), the main clandestine detention centre where almost 5,000 people were held captive and tortured during Argentina’s last dictatorship (1976-1983). In 2004, the former school was transformed into a “space of memory”. Drawing upon the asado episode, I consider which kind of practices of re-occupation former landscapes of death may allow.

I first provide an overview of the interventions that took place at ESMA within the Kirchnerist period (2003-2015). Second, I bring into play some cultural productions of the new generations, as well as performances and philosophical ruminations regarding the asado as a main theme in the local culture. Finally, I put these materials in the larger context of memory politics to explore how food-reunions – and expanded tables might work as a public pathway for a collective digestion of grief. The question that is ultimately at stake is how to kindle alternative hospitalities and dialogues in landscapes marked by loss. Might the spectrum of activities that took place at the former ESMA during the Kirchnerist years suggest a new conviviality for the aftermath of violence?     

Common ware production at Thamusida: dating and characterisation of Roman and Islamic pottery

Twenty-one samples of likely Roman, likely Islamic and unknown common ware from the archaeological site of Thamusida (Rabat, Morocco) were analysed in order to anchor selected types of pottery to a limited time span and, possibly, to a production area and technology. Analytical techniques were thermoluminescence, optical microscopy, scanning electron microscopy and X-ray fluorescence. The results arising from this research are definitely useful for the study of the site of Thamusida as well as for all researchers involved in archaeological and archaeometrical research in Morocco. Chronologies proposed on a typological base have been denied twice: a likely Islamic cup dates back to the second century a.d.; vice versa, a stewpot, framed into the Roman period, resulted to be an eighth century a.d. production. Moreover, the identification of an eighteenth century ceramic production is of outstanding importance, as it characterises a completely unknown production. Regarding the production area, four samples of both Roman and Islamic periods have been recognised as local productions of Thamusida.     

Branding Knowledge-intensive Regions: A Comparative Study of Pisa and Oulu High-Tech Brands

Place marketing and branding have drawn much attention both in the literature and in practice especially in the 1990s and 2000s. However, the research literature of place branding related to the dynamic evolution of knowledge-intensive regions is limited. This article aims at providing an analysis of place branding processes in knowledge-intensive regions in relation to the evolution of their high-tech clusters, in an attempt to identify the relation between brand development and cluster performance from a longitudinal perspective. The article discusses the results of a multiple case study, including Pisa, Italy and Oulu, Finland. The findings suggest that, in these two cases, branding consisted more in labelling an existing economic phenomenon rather than in fostering or having a bet on it in a visionary way. This is related to the political nature of branding which may provoke a mismatch between the timing of the high-tech cluster dynamics and the timing of branding initiatives, a mismatch which is likely to affect branding effectiveness and which should be considered when evaluating branding impacts.     

Access to capital markets and the geography of productivity leaders and laggards

This paper examines whether access to the capital market of convertible and nonconvertible bonds affects total factor productivity (TFP) for the population of Italian joint stock manufacturing companies, based in highly segmented local financial markets, between 2007 and 2017. The hypothesis, well grounded in the literature, is that long-term capital favors investment in intangibles and other risky assets necessary for productivity growth. To identify this effect, we exploit the exogenous shock of the Italian banking deregulation of the mid-1990s as an instrument for firm-level access to capital, interacted with distance from logistic networks. These reforms changed the distribution of the type of branches at the local level, increasing the share of joint stock banks, which have high connections to international capital markets. This geographical reallocation of banking activities ultimately affected firms' financial structure, favouring their access to capital, even when based in peripheral financial areas. Firms which issued instruments of market debt achieved higher levels of productivity and a higher probability to reach top percentiles of productivity distribution.