In order to understand past human behavior, it is necessary to identify and explain variability in the cultural materials resulting from this behavior. Chipped stone artifacts are the most ubiquitous cultural materials from the Middle Paleolithic. However, the interpretation of variability in these artifacts has been difficult. To address this problem, morphological variability in 1,146 Middle Paleolithic chipped stone tools, from four sites in the Iberian Peninsula, is examined in detail. This study differs from other analyses of Middle Paleolithic artifacts in emphasizing a quantitative investigation of both continuous and discrete morphological variability at the level of tool edges. These data permit analyses of the distribution of variability at the levels of individual edges, whole pieces, and assemblages. Patterns of lithic variability are also examined in the context of early Upper Pleistocene chronology and environment and compared with a larger population of Middle Paleolithic sites in Spain and the northwestern Mediterranean as a whole. For the assemblages studied, variability in edge morphology is predominantly continuous and normally distributed. Signficantly patterned relationships between edge attributes are restricted to cases in which one attribute limits, rather than determines, the range of variability in the other. These seem primarily based in the degree to which use, resharpening, and consequent edge reduction has taken place. Additionally, a dichotomy in patterns of edge use is suggested, associated with the extensiveness of use and modification. For whole pieces, most variability mirrors that of edges, suggesting that retouched artifacts are more the result of the extent and nature of the use of their edges than planned tools for which the maker had some form of "mental template." At the level of assemblages, temporal variability is minimal, while spatial and environmental associated variability is more apparent. These results are examined in light of the three most often proposed explanations for variability in Middle Paleolithic assemblages--style, function, and diachronic change. Subsequently, other aspects of Middle Paleolithic behavior--ranging from raw material usage to settlement patterns--are examined as potential sources for the patterns of lithic variability in the assemblages studied.

No description available.

No description available.

Buy a puzzle, assemble it, and destroy its original box. Take the puzzle, go to a lake, throw the puzzle in the lake, and leave it for a few weeks. Return to the lake and try to rebuild the puzzle from the remaining pieces. Such is the challenge of the research goals presented on this abstract – the reconstruction of a Portuguese frigate, Santo Antonio de Tanná, from its submerged remains. This thesis focuses on the mechanisms of reconstructing the ship, including the thought process, new computer tools, and imagination required for an archaeologist to be a detective of lost eras. The main objective was to understand the construction of a late Seventeenth-century Portuguese frigate. Frigates were responsible for patrolling the seas, intercepting fastmoving vessels, re-supplying military trading stations, and protecting trade routes. The existence of Portuguese frigates was known from historical records, but Santo Antonio de Tanná is the only frigate identified in the archaeological record. As such, its reconstruction should enable scholars to better understand the actual capabilities of seventeenth century frigates.A particular challenge in this study was ascertaining the manner in which Santo Antonio de Tanná’s construction reflected the state of affairs of the Portuguese trade network. Although their construction methods were advanced, the Portuguese adopted a shipbuilding design that was not able to compete as well in the new conditions of a changing global context. This study clearly demonstrate that cargo capacity was given greater emphasis than either speed or maneuverability, illustrating the on-going necessity of the Portuguese to build military ships with cargo capacity sufficient for minimal trade, even at the expense of speed. These were just the first steps in terms of what could be learned from the reconstruction. The best method to understand the ship, a three-dimensional object, was to recreate it into a three-dimensional environment in order to create a more accurate model. The resulting model permitted research to extend beyond the limits of the individual line drawings through the added benefit of being able to calculate hydrodynamics, sailing characteristics, and other data based on the ship’s morphology.

This dissertation research project focuses on maritime exploration during the Age of Discovery and the vessels that were the technological impetus for this dynamic era that ultimately led Christopher Columbus to the New World and Vasco da Gama to India. Little is known about the caravel and the nau, two ships which defined this era of global expansion; archival documents provide scant information regarding these vessels and to date there are only a few known archaeological examples. The caravel and the nau became lasting symbols of the bourgeoning Portuguese and Spanish maritime empires and are featured prominently in contemporaneous iconography. This dissertation bridges the gap between the humanities and sciences through the statistical analysis of the caravel, galleon, and nau in the iconographic record. As one of the first intensive uses of iconography in nautical archaeology, the study analyzed over 500 images using descriptive statistics and representational trends analysis in order to explore the two research questions posed, Are the ships represented in the iconography accurate? and Can iconography provide information on constructional characteristics of these vessels that will determine typology, evolution, and design changes? Gauging the accuracy of the ship representations was fundamental to establishing this study’s validity. The artists creating these images were not shipwrights or mariners and thus this research was not limited to the technological and constructional aspects alone. The dissertation addressed technology as a cultural symbol in order to understand how and why cultures attach such powerful and important symbolism to technology and adopt it as an identifying feature. On a broader level, this dissertation proved that iconography is a viable data source within nautical archaeology. The representational trends and general construction proportions analyzed in the iconographic record did provide an ample amount of information about the different ship types to greatly assist in the reconstruction of a caravel, galleon, or nau. The vast quantities of new data generated using these methodologies have the potential to significantly advance the study of these three ship types when paired with current and future archaeological evidence.

Buy a puzzle, assemble it, and destroy its original box. Take the puzzle, go to a lake, throw the puzzle in the lake, and leave it for a few weeks. Return to the lake and try to rebuild the puzzle from the remaining pieces. Such is the challenge of the research goals presented on this abstract - the reconstruction of a Portuguese frigate, Santo Antonio de Tanná, from its submerged remains. This thesis focuses on the mechanisms of reconstructing the ship, including the thought process, new computer tools, and imagination required for an archaeologist to be a detective of lost eras. The main objective was to understand the construction of a late Seventeenth-century Portuguese frigate. Frigates were responsible for patrolling the seas, intercepting fastmoving vessels, re-supplying military trading stations, and protecting trade routes. The existence of Portuguese frigates was known from historical records, but Santo Antonio de Tanná is the only frigate identified in the archaeological record. As such, its reconstruction should enable scholars to better understand the actual capabilities of seventeenth century frigates. A particular challenge in this study was ascertaining the manner in which Santo Antonio de Tanná's construction reflected the state of affairs of the Portuguese trade network. Although their construction methods were advanced, the Portuguese adopted a shipbuilding design that was not able to compete as well in the new conditions of a changing global context. This study clearly demonstrate that cargo capacity was given greater emphasis than either speed or maneuverability, illustrating the on-going necessity of the Portuguese to build military ships with cargo capacity sufficient for minimal trade, even at the expense of speed. These were just the first steps in terms of what could be learned from the reconstruction. The best method to understand the ship, a three-dimensional object, was to recreate it into a three-dimensional environment in order to create a more accurate model. The resulting model permitted research to extend beyond the limits of the individual line drawings through the added benefit of being able to calculate hydrodynamics, sailing characteristics, and other data based on the ship's morphology.

The aim of this project was to investigate the biogeochemistry and transport of metals in a river/estuarine system contaminated by acid mine drainage. The Rio Tinto and Rio Odiel drain a metalliferous mining area in the Iberian Pyrite Belt in the south-west of Spain. The pH values in the rivers were low (< 3) and dissolved metal concentrations were . extremely high, up to 2.6 mM Zn, 860 \M Cu, 6.0 jaM Cd and 72 nM U . The seasonal cycle of low precipitation and flash floods was identified as an important factor in generating the more severe contamination of the rivers with Fe, A l , Mn, Zn, Cu, N i , Co and Cd observed during autumn and winter, compared to spring and summer. The estuarine behaviour of dissolved Fe, Mn, Zn, Cu, N i , Co and Cd was primarily = controlled by pH. Apart from an addition of these metals from the sediment in the upper Tinto estuary, conservative mixing was observed up to pH ~ 5 (at S ~ 30), above which Fe, Mn, Zn, Cu, N i and Co were removed from solution. Voltammetric speciation studies showed that Cu complexing organic ligands (logK'cuL ~ 11-5, CL = 32 - 199 nM) in the estuary were saturated, and thermodynamic calculations indicated that the concentration of Cu^"^ reached values (pCu^"^ < 9) that are toxic to some marine and estuarine organisms. The estimation of fluxes indicated that the dissolved metal export from this system to thecoastal zone averages 101 d'^ Zn, 2.3 t d"' Cu, 180 kg d"^ N i and 236 kg d"^ Co, with higher contributions during wet, compared to the dry seasons. On-line measurements of Zn, Cu and N i in the Gulf of Cadiz revealed metal plumes associated with the Tinto/Odiel system and the Guadiana and Guadalquivir rivers. As a result of entrainment by the Atlantic Ocean surface current flowing into the Mediterranean Sea, the metal contamination in waters of the Gulf of Cadiz is transported south and eastward.

<p>This study was undertaken to provide supporting evidence for the late presence of Neanderthals in Iberia at the end of the Middle Paleolithic. This period is almost impossible to date accurately by the conventional radiocarbon method. Accordingly electron spin resonance (ESR) was used to obtain ages for four Spanish sites. They were EI Pendo in the Cantabrian north, Carihuela in Andalusia and Gorham's and Vanguard caves at Gibraltar. The sites were chosen to allow the greatest variety in geographic settings, latitudes and sedimentation. They were either under excavation or had been excavated recently following modem techniques. A multidisciplinary approach to dating the archaeological contexts was being proposed for all the sites except EI Pendo whose deposits had been already dated but only on the basis of sedimentological and faunal analyses. This was the first research program to apply ESR to such a variety of sites and compare its results with that of such a variety of other archaeometric dating techniques.</p> <p>The variety allowed a further dimension to the research that is the opportunity of appraising first hand the applicability and advantages of a new dating technique and determining its accuracy as an archaeological dating method in comparison with other techniques.</p> <p>Test samples for the research were collected at the sites as well as at the Museo de Ciencias Naturales in Madrid and the Gibraltar Museum.</p> <p>The ESR results for EI Pendo provide a terminus post quem of 31 Ka for the presence of the Neanderthal at the site. Those for Carihuela permit the Neanderthal skeletal remains found in layers Vand VI to be dated between 45 ka and 74 ka and between 67 ka and 86 ka respectively. The data also confirm the late presence of the Neanderthals in Andalusia. The results for the Gibraltar final Mousterian layer also confirm the presence of Neanderthals in southern Spain at 36.9 ±5 to 40.3 ±5 ka.</p> <p>While there are a number of secure dates for early Aurignacian deposits in Spain the results of the present research provide the first solid evidence of the late presence of Homo sapiens neanderthalensis in the Iberian Peninsula.</p> <p>Furthermore, from the data collected it can also be concluded that the ESR method is accurate and eminently suitable for dating archaeological contexts.</p> / Doctor of Philosophy (PhD)

No description available.

Sixty individual ring-width series of oak (Quercus robur L.) from six sites in the northwestern Iberian Peninsula, ranging from 50 to 120 years, were grouped using hierarchical cluster analysis with different types of distance measures. Euclidean distances as well as other linkage distances based on statistics used to crossdate tree-ring series (Gleichläufigkeit and coefficient of correlation with its corresponding t-value) were compared. In addition, a new distance measure based on a corrected inversion of the Student’s t is proposed in the present paper, which takes into consideration the number of years used for series comparison. The Euclidean distances, commonly used in ecological analyses, inefficiently identified homogeneous units of trees based on their ring-width patterns. Among crossdating statistics, the correlation coefficient was more effective than Gleichläufigkeit, but the most satisfactory results were obtained when 1/t was used as distance measure. Finally, these methods of cluster analysis have been implemented into a computer program for future use of the dendrochronological community.