Corondó: palaeoenvironmental reconstruction and palaeoethnobotanical considerations in a probable locus of early plant cultivation (south-eastern Brazil)

Abstract

The site of Corondó, situated in Campos Novos, in the São Pedro D'Aldeia municipe (Rio de Janeiro State, Brazil), was dated between c. 4000 and 3000 years BP. The high prevalence of dental caries in its population suggests that it might have been a locus of plant cultivation, a hypothesis supported by the presence of diverse plant remains and by the high frequency of grinding artefacts at this site. Anthracological analysis aimed to identify the environment of the site. The charcoal spectrum suggests that it was situated in a restinga forest, near to the Atlantic forest and with the presence of mangrove and open restinga in the environment. Firewood supply was probably obtained by the random gathering of dead wood. The combination of anthracological results with data provided by archaeological and bioanthropological research indicated that the population which constructed this site (1) had a relatively stable sociocultural system; (2) carried out a range of individual activities that remained constant throughout the occupation period; (3) lived in a relatively stable environment.     

The dating of Doggerland – post-glacial geochronology of the southern North Sea

Abstract

The landscapes and archaeological sites of the southern North Sea, drowned in the period 12–6 ky BP, represent an almost unexplored field of research. Published palaeoenvironmental reconstructions are largely speculative, being based on few published sea-level index points and in the absence of detailed physical and chronological surveys. In this paper, we review the post-glacial geochronology for the southern North Sea, which includes 54 radiocarbon ages derived from peat, 17 from molluscs and one known dated artefact. The lack of detailed contextual information for many dated samples means that there remains uncertainty in some elevation data, and thus in the resulting interpreted sea level. The archaeological artefacts are mostly derived deposits and thus are of limited use in palaeoenvironmental reconstruction. Overall, the data are consistent with current models of relative sea-level change back to about 10 ky BP (～45 m depth) but beyond this, there is very little published data. Much more detailed stratigraphic, microfossil and geochemical analysis is needed to help verify chronological data, help interpret the sedimentary settings in which fossils and artefacts are found, and contribute towards more reliable palaeoenvironmental and archaeological reconstructions of the history of the southern North Sea.     

Determining the preservation rating of submerged archaeology in the post-glacial southern North Sea: a first-order geomorphological approach

Abstract

During most of the last glaciation, the southern North Sea floor was exposed and accessible to humans. Archaeological finds are concentrated around Brown Bank, Dogger Bank and the Norfolk Banks, but the Palaeolithic and Mesolithic archaeological potential of these areas is poorly known. Management of submerged archaeological heritage requires knowledge about location (potential) and context, ascribing significance (value) and determining risk. Thus, the preservation potential of primary and secondary archaeological material around these three areas is considered a) in the context of the post-glacial evolution of the southern North Sea and b) regarding natural and anthropogenic processes. A detailed review is followed by original research material describing an approach to assessing preservation potential. In general, low-energy deposits associated with former intertidal, floodplain or lacustrine environments are likely to preserve primary archaeological material, including organic remains, whilst (high-energy) riverine environments are more likely to preserve inorganic secondary archaeological material. The main possible anthropogenic impacts on submerged archaeology result from beam trawling, which may disturb deposits at the seafloor, and aggregate dredging, which may remove secondary deposits. Trawling and aggregate dredging are increasingly contributing to knowledge, through reporting finds through established protocols, and through assisting in funding relevant to multi-disciplinary research.     

HOLOCENE ACCUMULATION OF COLLUVIAL AND ALLUVIAL SEDIMENTS IN THE WEIßE ELSTER RIVER VALLEY IN SAXONY,GERMANY*

Geoarchaeological investigations at two archaeological excavation sites lead to new results with respect to the Holocene landscape development of an archaeologically important loess landscape of Central Europe. Colluvial and alluvial sediments were sampled during archaeological excavations on the valley edge of the Weiße Elster and dated by means of ¹⁴C, TL and dendrochronology, and on the basis of archaeological finds. Thus, for the first time, the development of a valley edge of a river in the Leipzig area, which has been continuously settled for 7300 years, can be reconstructed. The first soil erosion on the valley edge is established towards the end of the Atlantic period. During the High Middle Ages, a colluvial sediment developed. Its deposition time can be limited to between ad 1000 and 1100. The flood loam near Großstorkwitz, which can be stratified by means of the soil and colluvial deposits, originated in the late Sub‐Boreal and early Sub‐Atlantic, as well as after ad 1100. During the first millennium ad, a soil developed in the older flood loam, which indicates a phase of reduced flood loam sedimentation.