Water Separation and Flotation Processes

Abstract

The water separator, a mechanical flotation device which is finding increasing usage among Mediterranean archaeologists, is compared with “tub” flotation which is widely practiced by North American archaeologists. The water separator was found to be two to three times more efficient than tub flotation. A redesigned separator is presented which should further improve this figure.

The problem of sample size and the attendant aspects of representativeness are evaluated by a comparison of items of various classes recovered in a 100% separator sample compared to the much smaller tub flotation sample.

Finally, the specific biasing effects of various recovery techniques with particular emphasis on fish remains is discussed.     

Identification and assessment of secondary refuse aggregates

Secondary refuse contains a wealth of information on the people who generated it. This article identifies some means by which archaeologists can identify and characterize secondary refuse aggregates — localized, high-density deposits of artifacts that have been discarded away from their place of use. A variety of studies of archaeological deposits — from prehistoric and historical archaeology, ethnoarchaeology, and modern material culture studies — provides hypotheses and a comparative database for discussion. I suggest that socioeconomic and demographic factors operating in a society greatly affect the composition of secondary refuse aggregates and propose some hypotheses regarding the directions and magnitudes of these relationships.     

Americanist Stratigraphic Excavation and the Measurement of Culture Change

Many versions of the history of Americanist archaeology suggest there was a stratigraphic revolution during the second decade of the twentieth century—the implication being that prior to about 1915 most archaeologists did not excavate stratigraphically. However, articles and reports published during the late nineteenth century and first decade of the twentieth century indicate clearly that many Americanists in fact did excavate stratigraphically. What they did not do was attempt to measure the passage of time and hence culture change. The real revolution in Americanist archaeology comprised an analytical shift from studying synchronic variation to tracking changes in frequencies of artifact types or styles—a shift pioneered by A. V. Kidder, A. L. Kroeber, Nels C. Nelson, and Leslie Spier. The temporal implications of the analytical techniques they developed—frequency seriation and percentage stratigraphy—were initially confirmed by stratigraphic excavation. Within a few decades, however, most archaeologists had begun using stratigraphic excavation as a creational strategy—that is, as a strategy aimed at recovering superposed sets of artifacts that were viewed as representing occupations and distinct cultures. The myth that there was a stratigraphic revolution was initiated in the writings of the innovators of frequency seriation and percentage stratigraphy.     

Archaeometric Clearinghouse

Abstract

The “Archaeometric Clearinghouse” aims to promote collaboration between field archaeologists and archaeometrists by disseminating information. It is not a book review column. The following notices of three symposium publications and two dedicatory volumes are therefore intended to be informative rather than critical. They call attention to the existence of books that are likely to be of interest to both archaeologists and archaeometrists, and they give a brief indication of the nature and scope of the contents.     

The Correspondence of Regional Patterns and Local Strategies in Formative to Classic Period West Mexico

Archaeological research in West Mexico has tended to emphasize two widely distributed and interlocking sets of archaeological remains—the shaft tombs associated with funerary ritual in the Formative/Early Classic periods (1500 B.C.–400+ A.D.) and the Teuchitlan tradition public architecture of the Late Formative/Classic (300 B.C.–900 A.D.) periods. Each is found across a wide area, and each has been used by archaeologists of different persuasions to define West Mexico as a cultural region. This paper contrasts the shaft tomb phenomena with the Teuchitlan Tradition and concludes that their core–periphery patterns are the result of two different kinds of elite–elite relationships. These, in turn, appear to be distinct local level strategies by elites to develop a following and to establish pools of available labor.     

Northern Iroquoian Ethnic Evolution: A Social Network Analysis

Ethnicity is one kind of social relationship that archaeologists explore. The evolution of the northern Iroquoian ethnic landscape in New York, southern Ontario, and the St. Lawrence Valley has been of long-standing interest to archaeologists. Since MacNeish’s (1952) pottery typology study, the predominant model for this evolution has been cladistic. Collar decoration served as a means of signaling attributes of the potter and pottery users that mirrored other more visible signals. We use social network analysis to determine whether pottery collar decoration data best fit MacNiesh’s cladistic or an alternative rhizotic model. The results better fit the rhizotic model.     

Radiocarbon Dating and the Historical Archaeology of Korea: An Alternative Interpretation of Hongryeonbong Fortress II in the Three Kingdoms Period,Central Korea

Relying heavily upon historical records to build archaeological chronologies, many Korean historical archaeologists question the utility of radiocarbon dating. To challenge this tendency, we test a model based on historical records by analyzing radiocarbon dates. We dated two bulk samples from Hongryeonbong Fortress II, Seoul, South Korea, which is known historically to have been occupied between a.d. 500 and 551. By dividing bulk samples into smaller aliquots, we dated 40 subsamples and statistically estimated consensus dates. The consensus dates do not support expectations of the historical model, as they do not lie within the temporal range provided by historical records. We propose an alternative model that explains both the radiocarbon dates and the historical records. It is suggested that radiocarbon dating can be successfully applied to the reconstruction of historical periods and is a way of mitigating possible biases of models based solely on historical records.     

Mobile Peoples: Pastoralists and Herders at the Beginning of the 21st Century

Bruce Trigger's and Adam Smith's comparative studies of state-level societies provide new theoretical approaches and are important components in a resurgence of explicit comparative analysis of early states by archaeologists. Trigger presents a massive systematic comparison of seven ancient states on an unusually large number of themes, whereas Smith carries out more intensive comparisons of a smaller sample on more limited themes. These well-written works make significant contributions to a number of areas, including empirical analysis, theory, and comparative methods.     

Re-visiting the field: Collaborative archaeology as paradigm shift

Abstract

The emphasis of the JFA on field methods resonates strongly with current disciplinary interest in multivocality and participatory research. In this new epistemology of inclusiveness, communities play an active role in the production of archaeological knowledge as well as in the conservation of cultural heritage. From the perspective of archaeologists trained in the U.S. who conduct research in Latin America, we historicize changes in the triadic relationship among archaeologists, contemporary communities, and things of the past. This examination focuses on the evolving social context of archaeological practice. The social milieu within which archaeology is conducted is explored further by reference to a recent survey of archaeologists that elicited comments on grand challenges to archaeology. A few examples of the many forms that an engaged archaeology might take are offered from the Maya region. Although collaborative research poses challenges that emerge as communities entangled with archaeological practice become research partners, we suggest that the enhanced relevance that accompanies this transformation is well worth the effort.     

The Archaeology of California

Stimulated by several important, recent empirical advances, California archaeologists are engaged in a series of lively debates. These advances include new discoveries about the early peopling of western North America and sustained occupation of the California coasts as early as 12–13,000 BP. There also have been significant new developments in the role of paleoenvironmental change in cultural evolution, the emergence of long-distance interaction spheres, the presence of intensive craft specializations, and the appearance of sociopolitically complex hunter–gatherers. This article addresses these issues—and several others—with a view to the general interests of scholars worldwide. The exceptional heterogeneity of California ecosystems (from deserts to dense redwood forests to bountiful offshore islands) and the remarkable cultural diversity exhibited by the dozens of major groups who made these lands their home combine to produce a complex indigenous sociopolitical picture. Current understandings reveal myriad trajectories of cultural change across nine major subregions of the state.     

Reconceptualizing Resistance in the Historical Archaeology of the British Isles: An Editorial

The present resonates with the harmonics of past events. Our archaeologies, because they deal with the everyday materiality of life, should not neglect to concern themselves with the domination of past people, since many similar forms of oppression persist. Moreover, we should consider the resistance to such domination. Rather than seeing resistance as simply reactive a problem which has generated much criticism—we can reconceptualize it to encompass a more nuanced understanding of the volition and agency of people in inferior positions of power. This lends new strength to the role of archaeologists in representing historical narratives of resistance.     

Global Application of Indigenous Archaeology: Community Based Participatory Research in Turkey

What does Indigenous archaeology offer archaeologists who do not work on Native land, at Indigenous sites, or with Indigenous people? This article demonstrates the broad applicability of Indigenous archaeology and the way it can be utilized by archaeologists working in any locale. Through recent fieldwork in south central Turkey working with a non-indigenous community of local residents near the archaeological site of Çatalhöyük, I demonstrate ways that the theories and methodology of Indigenous archaeology are a useful and relevant part of practice for archaeologists working in areas that are neither on Native land nor involve sites related to indigenous heritage. It also points to the need for further investigation into collaborative methods for the development of a set of best practices within archaeological and heritage management settings.     

中国海南省中和镇古城墙砖的热释光测年研究

采用热释光前剂量饱和指数法对海南省中和镇的8件古城门墙砖样品进行了年代测定研究。由于该地区离海近,粘土中的含沙量非常高,古人在烧制砖时,采用这种粘土作为制砖的原料。烧造时的温度相对高于其它地方烧制的砖。其中4件砖样内部呈灰色,3件砖样内部呈红色,其中1件砖样断面为外围灰色,内部红色。在应用高温细颗粒方法测定这批砖样的年代时,发现样品的高温热释光灵敏度非常差,且不规则,没有"坪曲线",因而无法得出这些古代城门墙砖的具体年代。后采用热释光前剂量饱和指数方法对古砖样品进行了古剂量测定,发现这些样品具有较好的热释光前剂量效应,且样品的热释光灵敏度较高,得到的古剂量具有很好的重复性。热释光测年结果表明,No.2、No.3、No.6、No.8样品的热释光年代分别为:距今590年、575年、530年和580年,为明代早期烧制;No.1、No.4、No.7样品的热释光年代分别为:距今410年、345年和375年,为明代中晚期烧制;No.5样品的年代为距今140年,为清代晚期。经考古人员现场考证,认为No.5样品所处位置存在火烧痕迹。这个火烧时间应该在中国清代晚期,即热释光测定年代。     

Doing Great Basin archaeology recently: Coping with variability

Great Basin archaeologists spent the 1970s and most of the 1980s tearing down the Desert Culture hypothesis without presenting compelling means for dealing with the empirical variability that made it untenable. Recent research seeks to understand this variability by examining the effect of key variables in extreme environmental contexts, especially in wetlands and at high altitudes, and by developing and refining models of optimality that anticipate variability as the local expression of general evolutionary ecological principles. Research on intraregional and ethnic variability has lagged behind—the former because it is said to be costly, the latter because it is problematical in theory.     

Protrusion, Bioturbation, and Settlement Detection during Surface Survey: The Lowland Maya Case

In upland settings in humid and semihumid temperate and tropical environments, bioturbation is a major factor in the burial of modest architectural remains, which are abundant components of the settlement systems of complex societies. Surface survey, favored by archaeologists of complex societies as a settlement detection method, seldom is appropriate for discovering architectural remains buried through bioturbation. Where the focus of analysis includes settlement represented by architectural remains, surface survey is appropriate only where all or a representative sample of all types of architectural remains are protrusive. Protrusion describes a relationship (affected by climate, environment, topography, and cultural variables) between the height of a ruined building and the depth of the biomantle, which is the zone of bioturbation. To enable archaeologists to assess the appropriateness of settlement detection procedures, including surface survey, I propose a scheme that classifies architectural remains in terms of their protrusion, building height, and visibility characteristics. The scheme can be employed to determine if and why architectural remains are protrusive in particular study areas. To demonstrate its analytical utility, I apply the scheme and the model of building burial through bioturbation that underlies it to the problem of Maya invisible settlement. I conclude that in the Maya lowlands of Mesoamerica, building remains buried through bioturbation are a more abundant settlement category than many archaeologists have supposed.     

Palynological study of a Mi'kmaw shell midden,Northeast Nova Scotia,Canada

Before now, no palynological studies were made on shell midden deposits in Nova Scotia, despite a long history of archaeological research. A test study of samples taken from the shell midden at Maligomish (Indian Island) on the Northumberland Strait was conducted to determine if sufficient pollen, fern and moss spores, and other non-pollen palynomorphs (NPP's, including fungal remains, algal spores) could be recovered to allow interpretation of environmental conditions at the time of deposition. Several pollen processing methods were tested: sieving and swirling, chemical treatment with cold HCl, 5% KOH and brief exposure to 5% NH₄OH, and treatment with acetolysis solution. We recovered variable amounts of pollen, spores and NPP's from samples taken at 3–5 cm, 5–15 cm and 15–25 cm below surface. Abundant microcharcoal fragments prevented effective use of the swirling technique, but sufficient palynomorphs were recovered by chemical treatments to allow assessment of down-section changes in assemblages. Three radiocarbon ages from Mya arenaria and Crassostrea sp., and measurements of sediment grain size, moisture, organic and inorganic carbon, provide a framework for analysing palynological assemblage changes and context for interpreting differential palynomorph preservation. Despite some oxidation and microbial degradation of palynomorphs in the time interval (ca. 380–1600 cal yr BP), the midden assemblages correlate with pollen zones from marine and lake core sites within ca. 50 km of Maligomish. Shifts in abundances of algal spores, testate amoebae and aquatic plant pollen also indicate changes in depositional conditions during the time of midden use. The study provides the first reference for archaeologists attempting to use palynology for analysis of samples from Nova Scotian shell-bearing contexts.     

Pottery Use-Alteration as an Indicator of Socioeconomic Status: An Ethnoarchaeological Study of the Gamo of Ethiopia

The use of a pottery vessel leaves markers on the ceramic wall that can inform archaeologists how the vessel functioned in the past. At present, archaeologists have little information for understanding how use-alteration reflects the complex nature of ceramic function and socioeconomic status. I conducted a 2-year ethnoarchaeological research project among the Gamo people of southwestern Ethiopia, who continue to produce and use pottery on a daily basis. This research indicates that interior surface attrition occurs primarily on pottery vessels used in wealthy households because of fermentation processes from high-status foods. Thus, the Gamo example suggests that there is a relationship between ceramic use-alteration and household socioeconomic status.     

From the modern to the archaeological: starch grains from millets and their wild relatives in China

Starch grains from 31 modern samples of millets derived from the seeds of 7 species within the genus Setaria and 2 species within the genus Panicum were analyzed to determine diagnostic morphological characteristics. Ancient starch grains recovered from a sample of broomcorn millet (Panicum miliaceum) excavated from the Cishan site (10.0-7.6 cal yr BP) in the North China Plain were then subjected to the same analyses to determine the differences in morphologies, if any, between modern and ancient samples. The data indicate that morphological features, and particularly surface and fissure features, will allow for solid identifications of ancient millet starches, while size classes will be helpful, but will not be dependable taxonomic indicators.     

A method for the identification of the location of regional cultural boundaries

Although it is widely accepted that exchangeable items often have a role in boundary maintenance, the forms of regression analysis used by archaeologists in the analysis of artifact distributions are generally unable to recognize the marked boundary effects that might be theoretically predicted, and alternative techniques are clearly required. In this study, it is suggested that single boundary profiles are well represented by a two-parameter family of functions related to the Verhulst model for population growth. A curve of this type was fitted by an iterative technique to empirical data values provided by the distribution of various regional series of late Iron Age coinage in southern Britain, and preliminary results suggest that in most cases the boundaries identified correspond to those which have been inferred on the basis of historical evidence. In addition, the analysis has drawn attention to a number of features which might repay further study—a close relationship between boundaries and major rivers, and a suggestion of the existence of distinct boundary zones between discrete territorial units. There are, however, a number of problems in the application of the method, and further work is needed.