1,720,985 research outputs found
First recognition of predetermined core reduction sequences in the Southern Po Plain area before isotopic stage 8 at the site of Cave Dall’Olio (Bologna).
No full textThis paper reports results of re-analysis of the assemblage of Cave dall’Olio (Bologna, Italy), which previous studies had allowed to include in the “Clactonian and Protolevallois facies” recognised in the Italian peninsula. On the base of correlations established with the climatic curves defined from the analysis of oceanic carrots this assemblage has been referred to a period preceding MIS 8.
The technological analysis carried out has been focused on the recognition of débitage objectives and the identification of volumetric conceptions. Several reduction sequences have thus been recognised most of which are characterised by a considerable control of the flaking convexities and a hierarchical subordination between the flaking surface and the striking platform. Some of them perfectly fit the variability of the Levallois reduction concept while others are characterised by a more volumetric semi-tournant exploitation of the core. Particularly the latter result in the production of thick laminar blanks. Analyses have also helped elements which were previously described as “typical clactonian and protolevallois products” to be replaced within the different phases of the reduction sequences identified, thus allowing a new interpretation of this assemblage. The results obtained highlight early appearance of predetermined core reduction sequences in the Italian peninsula, within the latest Acheulean complexes belonging to a middle-advanced phase of the Middle Pleistocene, in a perfect coherence with other regions of western Europe and the Levant
Emergence et développement des complexes à bifaces dans la marge méridionale de la plaine du Pô au Pléistocène moyen
No full textLa reconstitution des principales phases du développement des complexes à bifaces dans la marge méridionale de la plaine du Pô est le résultat de recherches intensives s’étant déroulées dans le territoire situé entre les villes de Bologna et Imola à partir des années ‘80 du XX siècle. Dans la plupart des cas, il s’agit de gisements de surface identifiés le long du piémont des Apennins septentrionaux. Les sites les plus significatifs ont aussi été l’objet de sondages stratigraphiques. Les données ici présentées sont issus d’un travail d’étude, encore en cours, sur les nombreux et riches complexes lithiques identifiés et d’une œuvre de révision des formations quaternaires apenniniques qui en a permis un encadrement chronologique
Uomini, ambienti, animali prima della storia
No full textGuida alle collezioni del Museo della Preistoria Luigi Donini di San Lazzaro di Savena (Bologna) dal Paleolitico inferiore all'età Romana
The introduction of a new flaking technique in the Bologna plain area during the Late Mesolithic (Castelnovian) and its relationship with débitage processes of local flint raw material: preliminary considerations
No full textDuring the Atlantic period lithic technical systems underwent consistent changes over great part of the continent which resulted in the systematic production of regular blades and bladelets. In the Bologna area Castelnovian assemblages are characterised by the exploitation of local lithic raw materials, namely small regular flint pebbles. The reduction schemes applied to the exploitation of these pebbles and the morphology of end-products vary significantly from those of Early Mesolithic (Sauveterrian). As evidenced by analyses carried out, the main aspect which these variations seem to be connected to is the shift from the use of direct percussion in the Sauveterrian to a new flaking technique depending on a higher control of core volumetry in the Castelnovian. The recognition of the new technique adopted (indirect percussion? pressure flaking?), which is here attempted by recording of diagnostic features both on cores and blanks, and a comparison with bibliographic data should be confirmed by a specific experimental program in the future
The Po plain in the Lower Pleistocene in the context of ancient industries in Southern Europe
No full textAlong a continuous belt over 100 km in lenght, in the east sector of the Po Plain, between the city of Bologna and the Adriatic coast, a series of Palaeolithic open air sites are documented, the best-known of which being the deposit of Monte Poggiolo (Forlì); all can be traced back to the very beginnnings of human occupation in the Italian peninsula
Il sito mesolitico dell'INFS di Colunga (Ozzano Emilia - Bologna)
No full textLa stazione mesolitica individuata nel 1986 sui terreni dell'I.N.F.S. (Istituto Nazionale per la Fauna Selvatica) è ubicata a circa 41 m s.l.m., pochi chilometri a valle dai primi rilievi collinari appenninici. Venne frequentata, in maniera occasionale, durante la fase sauveterriana del Mesolitico, da popolazioni che dovevano muoversi sul territorio per ragioni legate all'attività venatoria. Il ritrovamento di una porzione della paleosuperficie, successivamente disturbata da un corso d'acqua a bassa energia, ha consentito di effettuare una serie di rimontaggi sui manufatti litici e di ricostruire le catene operative messe in atto
Lithostratigraphie et evolution des industries du Paleolithique inferieur et moyen a l'Est de Bologne (Italie)
No full text--
Widespread diffusion of technical innovations around 300,000 years ago in Europe as a reflection of anthropological and social transformations? New comparative data from the western Mediterranean sites of Orgnac (France) and Cave dall'Olio (Italy).
No full textDuring MIS (Marine Isotope Stage) 9 and the transition to MIS 8 – around 350–300,000 years ago – some
lithic assemblages in Europe reflect marked transformations in technical behavior. These transformations
involved the standardization of products and the development of diversified and elaborated débitage
methods which are considered to be markers of the transition from the Lower to the Middle Palaeolithic
i.e. from Mode 2 to Mode 3. Taking the analysis of the sites of Orgnac 3 (Ardèche, France) and Cave dall’Olio
(Emilia Romagna, Italy) as a starting point, this paper discusses the variability of these assemblages
in Southern Europe as well as the social and anthropological implications of the emergence of new technical
behavior. It also aims to show that common features existed both in Northern and Southern Europe.
The development of more complex technical systems on a progressively wider territory and at an increasingly
earlier age argues in favor of the hypothesis of a close connection with the process of ‘‘Neanderthalisation’’,
possibly accompanied by the transmission of ideas through extensive social networks
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
- …
