Partial Solutions to Partially Understood Problems — The Experience of In Situ Monitoring and Preservation in Somerset’s Peatlands

Abstract

The peat moors of lowland Somerset contain a wealth of waterlogged archaeological sites, including some of the most significant prehistoric monuments in the country. There has been a long history of attempts to preserve archaeological sites in situ and monitoring of the burial environment began in 1982. The monitoring has become more complex over time, but the results suggest the same continuing problem of a drop in the water table over the summer months across the whole landscape. With the sole exception of the portion of the Neolithic Sweet Track that benefits from an irrigation system, all the other known sites remain at risk of gradual destruction. The solutions must be found on a landscape scale using agri-environment payments to secure sustainable management of the peat resource. Unfortunately, short-term changes to these payments and long-term changes to the climate are likely to worsen the situation and eventually to require a more drastic solution to the problem. Evidence has been generated to support an ecosystems approach to sustainable peatland management.     

Urban Settlement Systems and Rural Sustaining Communities: An Example from Chan Chan's Hinterland

Abstract

The study of prehistoric cities has often been marked by research strategies that focus completely on urban centers and thus preclude the delineation of entire settlement systems by ignoring the interrelationships between cities and their rural sustaining communities. A major focus of recent research in the Moche Valley on the Peruvian North Coast has been on elucidating the nature of urbanrural relations between the prehistoric Chimú city of Chan Chan and contemporaneous sites located in its hinterland. Excavation at the village of Cerro la Virgen together with additional evidence obtained from other sites in Chan Chan's rural sustaining area has provided insights into Chimú lifeways in nonmetropolitan areas, as well as evidence suggesting a multifaceted plan for organizing lands outside the civic center of Chan Chan. The archaeological data indicate that an important aspect of the organization of rural argicultural zones was the restriction of settlement to villages circumscribed by the Chimú state.     

Settlements and the Development of “Statelets” in Sonora,Mexico

Abstract

The late prehistoric and protohistoric population of eastern Sonora, Mexico, has been described on the basis of reports by early Spanish explorers, as being organized into modified chiefdoms called “statelets.” The development of these small, regionally discrete political units has been seen as the result of Casas Grandes influence. Archaeological data on late prehistoric settlement patterns gathered during an intensive survey of the Valley of Sonora and presented here verify that statelets did exist. Data on earlier settlements and settlement-pattern changes, however, are interpreted as meaning that statelets developed without external influence. A growing population and increasing local exchange are proffered as the underlying causes for statelet development. Contact and trade with neighboring groups did exist, but probably were consequences rather than causes of changes evident in the settlement patterns.     

The Prehistoric Local Environment of Grasshopper Pueblo,Arizona

Abstract

The prehistoric local environment near Grasshopper Pueblo, east-central Arizona, is reconstructed by analysis of mammalian microfauna recovered at the site. Changes in the vegetation surrounding the pueblo during the span of occupation (ca. 1300–1400 A.C.) are described and the present and past environments at the site are contrasted. Paleoenvironmental analyses to date have failed to produce evidence for a rapid prehistoric climatic shift with negative consequences for agricultural productivity.     

Chipped Stone Debitage,Material Selection,and Expedient Tool Production in Southeast Michigan

Abstract

This article summarizes the results of exploratory analyses on material sources and debitage attributes from chipped stone artifacts at sites identified and sampled by the Eastern Michigan University Field School along the Huron River Valley in southeast Michigan. Several hypotheses are tested with chipped stone debitage assemblages from 35 prehistoric sites to better understand material selection, expedient versus formal tool manufacturing, and the influence of material availability and mobility in chipped stone processing within the region. The distribution of debitage attributes (reduction stage, technology, condition, and size) are first compared by material source and quality. Then, the distributions of materials and debitage attributes are compared among small limited-use sites and two early Late Woodland small settlements. The results indicate a heavy reliance on poorer quality local cherts, and a focus on expedient tool manufacturing with both the local poorer quality and the nonlocal higher quality sources. There were no major differences in debitage assemblages between the limited use sites and the settlements.     

Sediment Peels from Prehistoric Sites

Abstract

A method for making sediment peels from profiles at prehistoric sites is described. It consists of placing a piece of cheesecloth over a cleaned profile and then applying several coats of white, polyvinyl acetate glue (Elmer's Glue-All). After the glue dries, the peel is removed, mounted on a board and then ready for study or storage. The sediment peel is an effective means of preserving the prehistoric profile and, as important, reveals cryptic stratigraphic features that are important in reconstructing the environment of deposition of the sediment and the environment of prehistoric man.     

PAPERS ON GEOPHYSICAL INVESTIGATIONS OF WOODLAND AND CADDO SITES IN THE CADDO AREA OF THE SOUTHEASTERN UNITED STATES

Abstract

Geophysical investigations on archaeological sites in the Caddo area of the Southeastern United States have become in recent years a critical part of the investigation of prehistoric and early historic Caddo sites, from small farmsteads and hamlets to large mound centers. The various articles gathered here provide substantive examples of the range of geophysical research that has been undertaken on Woodland and Caddo sites in southwestern Arkansas, eastern Oklahoma, and East Texas, and how that research has led to a better understanding of the spatial structure and internal organization of habitation sites and mound centers.     

Bone chemistry and the reconstruction of diet: Strontium discrimination in white-tailed deer

Studies of the relationship between the strontium content of human bone and past diet are still in an experimental stage. Because of the low frequency of carnivore remains at most archaeological sites and the absence of information on local strontium levels, it has been difficult to (1) estimate dietary intake for a prehistoric population, and (2) to compare prehistoric populations from spatially disparate areas. However, examination of strontium/calcium ratios in a modern herbivore may help to alleviate these problems. Bones from modern white-tailed deer (Odocoileus virginianus) were compared with deer diet in Wisconsin. An observed ratio between deer bone and diet in terms of a strontium/calcium index was calculated at 0204, which compares favourably with observed ratios reported for other mammals. Prehistoric white-tailed deer are used in the analysis of two Late Archaic sites in the midwestern U.S.A. The strontium levels in deer can be used as a baseline for comparison between sites. The prehistoric subsistence patterns are generally comparable, with hunting accounting for the bulk of the diet.     

Conservation and management of prehistoric rock art sites on the World Heritage List: A report on the Côa Valley international symposium, 1999

Abstract

A meeting of managers of prehistoric rock art sites inscribed on the World Heritage List was held at the Côa Valley Archaeological Park in Portugal in May 1999. Site managers from Africa, the Americas, Australia and Europe discussed issues of site protection, visitor management and interpretation to the public. The following report summarizes the experience reported at the symposium, which has led to the proposal to create an international network of site managers responsible for rock art sites.     

Archaeology and in situ Preservation in Canton Thurgau,Switzerland

Canton Thurgau (approximately 1000 km²) is situated in the north-east of Switzerland. Its diverse landscape is notable for its hills, the Thur Valley, and Lake Constance. The Archaeology Department of Canton Thurgau is responsible for its archaeology. The archaeological map is quite complete and has over one thousand sites, ranging from the Palaeolithic to post-medieval periods. Particularly remarkable are the prehistoric lakeside dwellings (among them, four UNESCO World Heritage Sites) and the Roman sites, some of which have extraordinarily good conditions for preservation. The vicus Tasgetium (Eschenz) has produced one of the largest collections of Roman wooden objects and features found anywhere in the world. The Archaeology Department of Canton Thurgau conducts field surveys, excavations and scientific research. Its collections and archive are also of great importance. A major goal is to preserve the numerous sites of the canton in situ. In sensitive shore areas, where erosion (wave action, shipping etc.) threatens the exposed prehistoric cultural layers of the pile dwellings, measures are being taken to cover the areas and keep destruction at bay. These interventions are accompanied by monitoring. But numerous Roman and medieval ruins have also been restored according to the latest standards and thus prevented from gradual destruction. Thanks to zoning plans and a close working relationship with the local authorities, timely intervention can take place when sites are threatened. The results of the archaeological research are conveyed to the public and professional circles through the Museum for Archaeology and by way of popular and subject-specific publications.     

Experimental Flake Scatter-Patterns: a New Interpretative Technique

Abstract

Scatters of flint waste flakes are among the commonest finds on prehistoric sites. To understand how such patterns are formed, we made a series of Neolithic axe roughouts and other tools and recorded the distribution of waste flakes. The most important variable affecting the size and shape of flake scatter patterns seems to be the knapper's position. The applications of these experiments to prehistoric data are considered.     

Knowledge capture and transfer in rock art studies: Results of a questionnaire on rock art decay in Britain

Abstract

Several thousand prehistoric rock art sites are known in Britain, yet the degree of preservation of these engravings remains a poorly researched and undervalued aspect of the historic environment. Our lack of knowledge has severe implications for how we interpret the rock art sites and how we conserve and manage them. The ongoing ‘Fading Rock Art Landscapes’ project aims to address this gap in our knowledge by gathering information on the rate and nature of decay in prehistoric engravings. As part of the project, a questionnaire was distributed to a number of individuals who, for up to thirty years, have been visiting and recording rock art and who have a detailed knowledge of the sites, how they have changed over time and the types of threat to which they are exposed. In particular, the questionnaire aimed to capture individuals' perceptions of how three groups of agents (physical/chemical, animal, human) influenced the degradation of the engravings. The synthesized results reveal common perceptions of a duality in the rate and nature of decay, with a slow background level of erosion caused by physical and chemical agents, over which is superimposed a rapid, variable degradation from the impact of humans and animals.     

SOUTH APPALACHIAN MISSISSIPPIAN AND PROTOHISTORIC MORTUARY PRACTICES IN SOUTHWESTERN NORTH CAROLINA

Abstract

Mississippian societies of southwestern North Carolina are generally thought to have been less centralized and less hierarchical than their counterparts elsewhere in the Southeast. This paper compares and contrasts mortuary patterns at the Warren Wilson, Garden Creek, and Coweeta Creek sites to reconstruct patterns of social and spatial differentiation within late prehistoric and protohistoric communities in southwestern North Carolina. These sites include, respectively, a late prehistoric stockaded village, a platform mound and village, and a protohistoric Cherokee town with a public structure and several domestic dwellings. Distributions of burial goods and the placement of burials indicate that some social distinctions were reflected in the treatment of the dead by Mississippian and protohistoric groups in southwestern North Carolina, and that those distinctions were embedded in the architecture and built environment of these sites.     

Promotion of a neglected heritage at Stone Age sites in the Western Cape,South Africa

Abstract

All archaeological sites in South Africa are protected in terms of the National Monuments Act, yet some have been badly damaged by vandals, unauthorized collectors and the effects of natural and anthropogenic erosion. In an effort to minimize such damage, the policy in the past has been either to restrict access or to keep a low profile, in relation both to rock art and excavated sites. Coupled with the fact that, in the past, the precolonial period has not been included in school history curricula, this policy has had a negative effect. South Africans generally have a limited knowledge of the results of research on rock art and archaeology and are not aware of the legislation. Furthermore, there is no infrastructure and no market for promoting such sites for tourism. The National Monuments Council has identified the need for public education in this field within a broader goal of promoting a common heritage for all South Africans in this time of political change. Three examples of recent active intervention are given in this paper. Stone Age living sites at Nelson Bay Cave and Matjes River rock shelter have been developed as local attractions, and protective conservation measures have been put into practice at rock art sites that are open to the public in the Western Cape.     

Bioturbation of Submerged Sites by the Asiatic Clam: A Case Study from Amistad Reservoir SW Texas

Abstract

Burrowing clams represent a poorly studied threat to shallowly buried and submerged archaeological sites across North America. Test excavations at a formerly submerged prehistoric terrace site in SW Texas unearthed burrowing clams (Asiatic clam Corbicula fluminea) in, under; and around features. A review of this clam's ecology, burrowing habits, geographical distribution, and presence in this and other archacological sites illustrates the potential for significant sediment disturbances.     

Depositional Context as the Foundation to Determining the Palaeolithic and Mesolithic Archaeological Potential of Offshore Wind Farm Areas in the Southern North Sea

Abstract

There is currently limited evidence on which to assess the submerged prehistoric potential in areas of renewable energy development. This paper presents a geomorphological approach to examine the Palaeolithic and Mesolithic archaeological potential in relation to the Round 3 offshore wind farm (OWF) areas of the southern North Sea. The depositional context and major stratigraphic correlations between the terrestrial sequence on east coast of Britain and offshore marine sequence of the southern North Sea are used to provide a first-order assessment for identifying horizons of archaeological interest in OWF zones. Using the examples Triton Knoll and East Anglia One OWF, the nature of renewable energy development on identified archaeological horizons is discussed, noting that any impact needs to be considered on a site-by-site basis. Studies are not only needed on the practical assessment of any development impact but also on the impacts of natural processes in OWF zones.     

Excavations at Prehistoric Sites on the Navajo Indian Irrigation Project,Northwestern New Mexico

Abstract

The results of a large excavation project in the San Juan Basin of NW New Mexico are summarized in this article. Discussion is limited to prehistoric and protohistoric sites, 22 of which were excavated. The majority of the remains are small, surface aceramic sites that are believed to relate to the Archaic Cultural Complex. These sites reflect a specialized adaptive strategy focusing on seasonal mobility and the exploitation of resources occurring at or adjacent to sand dunes. The lithic assemblages from these sites generally are homogeneous and reflect opportunistic usage. Occupation of the project area during the Anasazi phases was limited. A considerable protohistoric Navajo occupation is apparent, with one excavated site suggesting a very specialized economic orientation emphasizing antelope procurement. The research focus of the project was on comprehensive lithic analysis and on paleoeconomy. Several methodological considerations are discussed, as is the necessity for developing a unified research perspective that will produce comparable data for the region.     

Soft-Stone Sources on Crete

Abstract

Neutron activation analysis and other analytical techniques enable archaeologists to match certain stone artifacts with their sources in the living rock. Steatite, serpentinite, and chlorite, which are often called “soft stones,” have been matched with considerable success in tests on New World samples. Matching artifacts and sources helps the archaeologist in determining prehistoric exchange systems and thus gain considerable insights into ancient cultures.

In order to provide basic information on soft-stone sources on Crete with which samples from artifacts may be compared, a review of the literature and two field surveys were undertaken. The results indicate that soft-stone sources on Crete are more extensive than formerly believed. The correlation between soft-stone deposits and the location of ancient sites is also considered.     

Prehistoric Investigations in Cantabrian Spain

Abstract

The rich Paleolithic record from Cantabrian Spain has long been interpreted in light of the phylogenetic, chronological scheme developed largely in the Périgord region of SW France, despite important differences in industries, environments, and faunas. This paper outlines the development of prehistoric research in Cantabria from its beginnings a century ago to the present, from the early work of establishing a regional chronology to the on-going attempts to understand and explain the changing regional adaptations of Pleistocene and early Post-Pleistocene hunter-gatherers. Cantabria is usually treated only in passing in syntheses of the prehistory of Western Europe, and its extensive literature is far less widely known than that of SW France. We hope in part to remedy the situation by providing a concise regional overview and an extensive bibliography of classic and modern references.

Preliminary conclusions from archaeological investigations and allied paleoenvironmental research by members of the La Riera Paleoecological Project are also discussed. The La Riera Project is an example of a modern, problem-oriented regional approach to the study of prehistoric human adaptation. It was designed to generate and test hypotheses about Late and Post-Pleistocene ecosystems in Cantabrian Spain. These hypotheses examine the relationships among habitat selection, site location, and climatic change, test for periodicity in prehistoric occupation, and examine patterns of covariance in artifact and faunal debris categories with the objective of isolating changes in adaptation recoverable from the 12,000 year record at the La Riera cave, and at other sites of comparable antiquity in the Cantabrian zone. Preliminary results define patterns of site-functional variation at La Riera related to prehistoric activity sets. These patterns appear to cut across the culture/stratigraphic units upon which much Upper Paleolithic research in western Europe is based.     

Coastal Erosion and Site Destruction on Carriacou,West Indies

Abstract

Archaeological investigations on the island of Carriacou in the southern Lesser Antilles, west Indies, have revealed prehistoric sites dating from CAL A.D. 400 to 1400. Grand Bay is one of the largest and archaeologically richest sites on the island and in the region, but is rapidly succumbing to erosion from natural forces and human activities. A similar problem affects the site of Sabazan. Both sites are located on the windward east coast of the island and have been, or are currently, mined for sand; two hurricanes also occurred recently. Photographs and extensive mapping of Grand Bay and preliminary work at Sabazan indicate that both sites are eroding at an average rate of approximately 1 m per year along the lengths of their coastal profiles. These data, combined with a quantification of materials recovered from excavation at Grand Bay, indicate that the loss of cultural remains from natural and human causes is catastrophic and that these sites will likely be completely destroyed within the next two decades if erosion continues at its present rate.