Micromorphological Study of Concotto Surfaces Protected by the Avellino Eruption in 3945 ± 10 cal. BP at the Early Bronze Age of Afragola Village in Southern Italy

ABSTRACT

The term Concotto refers to fragments or patches of hard heated clay that derive from living surfaces, walls, and ovens. Concotto fragments are found throughout the Italian peninsula and date from the Neolithic to the Iron Age. Current studies express contradictory opinions about whether or not the Concottos on living surfaces represent intentionally constructed surfaces or the secondary products of the contact between hot embers and sediments. This study uses micromorphological analysis to investigate the function and composition of Concotto surfaces from several domestic structures at the Early Bronze Age village of Afragola in southern Italy. Afragola is an exceptionally preserved agricultural village that was covered by almost 1?m of volcanic ash during the Vesuvius eruption in 3945?±?10 cal. BP. The Concottos at Afragola are hard, red surfaces that are typically associated with burned materials. Micromorphological analysis reveals that the Concottos were intentionally made by laying down patches of clay and then heating them to create a hard, flat surface. This study explores the potential uses of the Concotto as cooking surfaces during the Early Bronze Age of southern Italy.     

Together in the field: interdisciplinary work in Kebara and Hayonim caves (Israel)

The authors present an example of close field collaboration among prehistorians and researchers from different disciplines (particularly the geosciences), within the context of a long program of interdisciplinary research at the caves of Kebara and Hayonim (Israel). We outline the benefits brought about by the presence of different specialists being in the field during the excavation over long periods. Specifically, daily collaboration in the field during the excavation brings about: (1) A consensus of choice of strategic areas to excavate, either at the beginning of the project or during successive field campaigns, while taking into account the needs and goals of different specialists and their needs in taking samples; (2) A meeting of different points of view with many discussions of stratigraphy and site formation processes, which in caves are quite complex; (3) A unification of specialized vocabulary and jargon specific to each discipline by constant interaction in the field, which in turn facilitates communication among specialists; (4) A positive didactic element in training doctoral students in the field. This interdisciplinary strategy is more or less widespread now, but it was not the case in the early 1980s, and actual integration of results from the sciences (particularly the geosciences) came about only fairly recently. Without doubt, the awareness of the importance of such interdisciplinary archaeological data for discussing archaeological issues has ultimately paved the way for active interdisciplinary collaboration sprouting from the fieldwork, and has led to the generation of more robust and accurate interpretations.     

General Groves and the Bombing of Hiroshima and Nagasaki (Part II)

Die Entscheidung für den Bau der Atombombe fiel in den Vereinigten Staaten aus der Befürchtung heraus, daß deutsche Wissenschaftler und Ingenieure die (in deutschen Laboratorien gemachte) Entdeckung der Urankernspaltung waffentechnisch verwerten würden. Aber sobald die U.S.A. sich einmal entschieden hatte, den Bau einer Atombombe ernsthaft zu betreiben, entwickelte das Unternehmen eine Eigendynamik. In dem Bestreben, das Projekt zu finanzieren, ohne daß die Öffentlichkeit etwas bemerkt, wurde es dem Army Corps of Engineers übertragen, in dessen beträchtlichem Kriegsetat die Ausgaben versteckt werden konnten. Das Projekt erhielt den Namen Manhattan Engineer District, um den Anschein zu erwecken, es handle sich um die lokale Abteilung irgendeines anderen Pionierkorps – was später abgekürzt wurde zu Manhattan Project –, und General Leslie R. Groves, bekannt dafür, Dinge in die Hand zu nehmen und zu Ende zu führen, wurde die Leitung übertragen. Die Beiträge der Wissenschaftler waren zwar entscheidend, doch hatten sie wenig Verständnis dafür, was erforderlich war, um ihre Labor-Experimente in den Maßstab industrieller Fertigung zu überführen; darin war aber General Groves ein Meister. Auf dem Höhepunkt des Vorhabens im Sommer 1944 beschäftigte das Projekt in großen und kleinen Einrichtungen überall in den U.S.A. und in Kanada über 160000 Menschen; und es kann als Zeichen für die Effektivität des Sicherheitssystems angesehen werden, daß die meisten der am Projekt Arbeitenden nichts über den wahren Zweck ihrer Tätigkeit wußten und daß die meisten Amerikaner erst durch die Meldung des Bombenabwurfs über Hiroshima vom 6. August 1945 eine vage Vorstellung von dem Projekt erhielten. General Groves war nicht nur für die Konstruktion der Bombe verantwortlich, er übernahm auch die Verantwortung für die Planung des Abwurfs der Bomben in Japan, und er gab – was weniger bekannt ist – auch die Befehle, welche die Bomben auf ihren Weg nach Hiroshima und Nagasaki schickten. Er war von Anfang an entschlossen sicherzustellen, daß sowohl die Plutonium-als auch die Uranbombe noch vor dem Kriegsende in japanischen Städten Verwendung fänden.     

Micromorphology of Pech-de-l'Azé II sediments

A micromorphological study of the sediments from the cave of Pech-de-l'Azé II using the terminology of Brewer (1964) was undertaken in order to describe them, to compare the results and their palaeoclimatic interpretations (e.g., Laville, 1973) with those of classical sedimentological analyses and to evaluate the role of micromorphology in the analysis of cave and rock-shelter deposits.The soil skeleton is composed of quartz sand and silt resulting principally from the decay of bedrock with local reworking by solifluction and ruissellement. Lithorelicts consist of bedrock fragments of cryoclastic origin and detrital phosphate grains which can be identified as being large carnivore (bear or hyaena?) coprolites. The plasma is composed of mostly iron rich clay and although it was most abundant in reddish layers of previously recognized soils, no micromorphological evidence for clay illuvation was found. The latter might have been caused by post-depositional destruction by freeze and thaw which produced the generally well developed banded fabrics in many of the beds. Free grain argillans occur sporadically but are particularly well developed on phosphate grains. Secondary calcite, occurring either in dispersed zones or as void calcitans and neocalcitans occurs throughout but is more marked in the upper layers and bed 6.Micromorphologically based palaeoclimatic interpretations agreed on the whole with those obtained by classical sedimentology although several questions were raised which should make us more cautious in interpreting “classical” data: such as the origin of the clay, especially in “soil” horizons. The advantages of micromorphology in delineating sequence of events were indicated.     

New radiocarbon dating of the transition from the Middle to the Upper Paleolithic in Kebara Cave,Israel

The Middle to Upper Paleolithic transition (MP-UP transition) is considered a major technological and cultural threshold, at the time when modern humans spread “out of Africa”, expanded from the Levant into Europe and possibly into central and northern Asia. The dating of this techno-cultural transition has proved to be extremely difficult because it occurred sometime before 40,000 radiocarbon years before present (¹⁴C years BP), which is close to the end of the effective dating range of radiocarbon. Other dating methods such as Thermoluminescence (TL) or Electron Spin Resonance (ESR) are not sufficiently precise to date the recorded archaeological MP-UP transition in the Levant. Here we report a consistent set of stratified radiocarbon ages on freshly excavated charcoal from Kebara Cave, Mt. Carmel (Israel), that span the late Middle Paleolithic (MP) and Early Upper Paleolithic (EUP) This study applied novel strategies to improve sample preparation techniques and data analysis to obtain high-resolution radiocarbon models. From this study it is proposed that the MP-UP transition for this site can be placed immediately after 45,200 ± 700 ¹⁴C years BP and before 43,600 ± 600 ¹⁴C years BP or from 49/48 to 47/46 radiocarbon calibrated years before present (years Cal BP).     

Multi-method (TL and OSL), multi-material (quartz and flint) dating of the Mousterian site of Roc de Marsal (Dordogne,France): correlating Neanderthal occupations with the climatic variability of MIS 5–3

Roc de Marsal has yielded numerous remains of Mousterian occupations, including lithics, fauna and combustion features. It was made famous by the discovery of the skeleton of a Neanderthal child. Given the need to date the sequence, TL and OSL were applied on heated flints and quartz, and OSL on unheated quartz. Chronological results combined with palaeoenvironmental data – faunal remains and micromorphological features in the sediments from the cave, pollen proxies and faunal remains from the region – allowed us to place climate variations in southwest France on a numerical time scale. Denticulate Mousterian occupations were dated to the middle of MIS 4 (65–70 ka) and Quina layers either to the very end of MIS 4 or to MIS 3. Interestingly, a faunal pattern showing a mix of red deer, roe deer and reindeer was found to have occurred during MIS 4, which was shown to be consistent with data from other similar sites in southwest France.