This report presents four radiocarbon dates of charcoal pigments from Picture Cave, a site located in a remote wooded area in east-central Missouri. Carbon from charcoal pigments was extracted from three rock drawings on the wall of this cave. The four pigment samples contained sufficient carbon for accelerator mass spectrometric radiocarbon analysis. These black pigment samples (red and white paints are also present in the cave) yielded dates that place their affiliated motifs in a time-frame associated with Cahokia ca. 950 years ago. The dates are somewhat earlier than expected. We discuss the dates in connection with the iconography of the three motif panels tested.

The household is the most basic and flexible component of human social organization. It is through the household that we can understand the Chaco phenomenon from the point of view of agriculture and craft production. Households strive for autonomy and self-sufficiency and they spread themselves thin to meet basic subsistence requirements. As a result, scheduling of agricultural and craft activities is critical to the success of the household. Craft technologies must be complementary with agricultural activities; for example, pottery may be made during the heat of the day when agricultural tasks are at a lull. The concept of intersecting technologies suggests that technical knowledge, resources, and labor may be shared among crafts and other activities. Chacoan households probably specialized in the production of different crafts including pottery, jewelry, basketry, and other woven goods. Within the context of the Chaco regional system the mobilization of labor would have been through obligatory work assignments that complemented domestic autonomy in agricultural production and, as a result, would have been organized seasonally.

Explaining prehistoric mound development requires both anthropological and geoarchaeological perspectives. Illinois Hopewell (Middle Woodland) mounds are remarkable for the range of earthen materials used in their construction. Adding to this variety we document the presence of upturned sod blocks in a mound at the Mound House site. There and at other Illinois sites the sods have dark, 3-10-cm-thick A horizons with minimal or no evidence of B horizon development. They required no more than a few decades to form and did so under a grass cover. Humans probably created the conditions that enabled sods to form, but the sod blocks were not cut from soils adjacent to the mounds (unless from another mound surface nearby) or from soils in habitation areas. In some respects, sod blocks would have been a superior earthen building material, appropriately chosen, for instance, to construct stable, near-vertical walls of above-ground tombs. Their selection and use, however, cannot be explained solely according to principles of sound and efficient mound construction. We argue that sod blocks and other kinds of earth for Illinois Hopewell mounds surely had important symbolic dimensions in addition to their structural properties.

The band-macroband Early Archaic settlement model has had widespread use in Southeastern North American archaeology since its introduction some ten years ago (Anderson and Hanson 1988). Nevertheless, the model has undergone little critical testing. New data from Early Archaic assemblages in North Carolina and South Carolina are used to test the model's posited settlement range and site types. At issue is the role played by the limited distribution of high-quality knappable stone in Early Archaic adaptations. Contrary to the band-macroband model, it is suggested that high-quality tool stone played a more significant role in settlement adaptations than previously recognized. In particular, group mobility incorporated the geological occurrence of preferred tool stone. Moreover, it is argued that the level of tool curation in Early Archaic assemblages is telling us less about forager or collector site types than it is about the differential use of stone raw material. Last, a new settlement model is proposed whereby settlement ranges were not restricted to particular watersheds along the South Atlantic Slope; rather, settlement ranges “mapped on” to an area that varied annually across the landscape according to food availability but generally included regionally significant stone quarries.

Manufacture and movement of pottery has a complex and changing history in the ancestral pueblo region. By the time great houses were being built in the Chaco sphere, four wares were in use and some areas were supplying large quantities of pots to the sites in Chaco Canyon. Widespread stylistic trends indicate mechanisms of communication and shared ideals over a huge area. Ceramics are an index of how large quantities of everyday items were transported more than 60 km to Chaco. The similarity of source and form assemblages at small sites and great houses demonstrates the close link between the two kinds of sites. The scale and layout of great houses and layering in great mounds associated with them are suggestive of periodic events that are components of Renfrew"s model of central Chaco as the location of devotional events. Scrutiny of layer contents indicates that such events were variable, and that lithics and ceramics from a single geographic source seem to be independently transported. Different areas may have been represented differently at different events, but layers always retain some of their complex composition of sources.

The study of artifact standardization is an important line of archaeological inquiry that continues to be plagued by the lack of an independent scale that would indicate what a highly variable or highly standardized assemblage should look like. Related to this problem is the absence of a robust statistical technique for comparing variation between different kinds of assemblages. This paper addresses these issues. The Weber fraction for line-length estimation describes the minimum difference that humans can perceive through unaided visual inspection. This value is used to derive a constant for the coefficient of variation (CV = 1.7 percent) that represents the highest degree of standardization attainable through manual human production of artifacts. Random data are used to define a second constant for the coefficient of variation that represents variation expected when production is random (CV = 57.7 percent). These two constants can be used to assess the degree of standardization in artifact assemblages regardless of kind. Our analysis further demonstrates that CV is an excellent measure of standardization and provides a robust statistical technique for comparing standardization in samples of artifacts.

Architecture both reflects and emphasizes the distinctions upon which social and political organization are based. In particular, an "architecture of power" has been recognized in a number of hierarchical, prehistoric cultural contexts, from the Chacoans to the Mississippians. In these cases, the specific architectural style of a central place is replicated at points in the surrounding area, either as an imitative response by local populations or as a tangible reflection of control exerted from the major political center. The latter situation seems the most likely in the area close around the primate center of Casas Grandes, Chihuahua, Mexico. Here, architectural data from the authors' recent survey and excavation projects are used to recognize a local architecture of power, to trace its distribution, and to postulate several different types of control nodes in the area lying around the primate center. These nodes vary in type and level of elaboration, and it is argued that this variation reflects the nodes" different roles in the organization of Casas Grandes" hinterland.

The Caradoc site, dating ca. 10,500 to 10,000 B.P., provides a rare glimpse of sacred ritual among the earliest well-documented inhabitants of the Americas. It is a kind of site never before reported, where the majority of the artifacts have been purposefully broken or sacrificed. The site yielded 302, mainly chert, lithic fragments that fit together to form at least 71 artifacts. The material includes an unfluted concave-based point, three bifacial knives, 31 unfinished bifaces, 27 unifaces and nine non-siliceous items. Distributional analyses indicate that: 1) the material was initially spread over an area of as much as 12 m2; 2) the items were constrained in their distribution and could have been in a structure; and 3) the artifacts were broken at the location where they were found.

Using selective maize yield data from ethnohistoric and government sources dating between the mid-nineteenth and mid-twentieth centuries, Schroeder (1999) argues that Mississippian average yield potential fell within a 9-10 bu/acre range. We evaluate her argument in terms of well-established climatic, environmental, varietal, and behavioral constraints on maize agriculture and conclude that reconstructing prehistoric agricultural potential requires a more precise methodology that incorporates these factors.

In science, understanding the relationship between data and problems is crucial to successful research. When problems are imposed on the data and its organization-instead of addressing the empirical subject matter of the discipline-a major epistemological difficulty arises. What domains of knowledge can reliably inform about the imposed problem? I suggest that the many claims that all data are "theory dependent" are primarily accurate in those instances when a problem is imposed on a body of data. This is the approach of humanities. When a problem is recognized in the context of pattern recognition studies that are focused on data generated from the study of one"s subject matter, a different relationship exists between data and theory and fruitful theory building becomes possible. The latter is the approach of science. Central to this contrast is the issue of where problems come from.

Changes in river floodplain morphology can have devastating consequences for irrigation agriculturalists. Channel erosion occurred in the late nineteenth century, on the flood plain of the middle Gila River, Arizona and severely impacted the native Akimel O' odham (Pima) farmers. Prior to the Akimel O' odham, the prehistoric Hohokam also pursued irrigation agriculture along this river. Geoarchaeological investigations of the Gila River flood plain document a major period of channel cutting and widening sometime between A.D. 1020 to 1160. This channel erosion is coincident with the partial abandonment of large Hohokam villages and significant population rearrangements. It also marks the beginning of a major social reorganization when ball-courts were replaced by platform mounds as the social integrative structure and the Hohokam sphere of influence contracted. Other rivers utilized by the Hohokam—the Santa Cruz River, San Pedro River, and Tonto Creek-also experienced channel cutting between A.D. 1050 and 1150. Thus, a regional episode of channel erosion appears to have been a major factor that contributed to the reorganization seen in the Hohokam archaeological record. These synchronous landscape changes would have severely impacted Hohokam irrigation systems and food production capabilities. This undoubtedly created stresses within Hohokam society which in turn may have accelerated social, political, economic, ideological, and demographic changes that were already underway.

The most unusual aspect of chipped stone in Chaco Canyon is that materials were imported from a considerable distance but used almost exclusively as informal flake tools. Narbona Pass chert from the Chuska Mountains, 75 km away, is the most common nonlocal material found during the Chacoan Era (A.D. 900-1150). There are relatively few number of formal tools found in the Canyon, primarily projectile points, and a significant number of these do not seem to have been made in Chaco. New models of the organization of production offered by Earle, Hagstrum, Peregrine, and Renfrew (this issue) are evaluated using chipped-stone data collected by the Chaco Project during the 1970s. Chipped-stone data support the suggestion made by these scholars that great houses in Chaco Canyon were the focus of periodic communal gatherings. Deposition of quantities of Narbona Pass chert debitage in great house trash middens was apparently a ceremonial aspect of these gatherings, perhaps related to Puebloan concepts of renewal. Some projectile points appear to have been deposited in great house rooms or kivas as ritual offerings.

In the preceding paper, Binford distinguishes between scholars who derive theory from within archaeological datasets and do science, and those who borrow theory from elsewhere and engage in the humanities. I agree that archaeological datasets constitute one fruitful area for the origin of research questions but not the only one, and suggest other ways that he could have considered the matter. I provide concrete examples of Binford"s preferred research strategy and mine, and discern significant differences between the two. What Binford considered the importation of theory was really the formulation of models that were ultimately tested on archaeological datasets.

When did the League of the Five Nations Iroquois originate? This study presents a new approach to answering this age-old question. Compositional data were collected on ceramics (pottery and smoking pipes) from Seneca and Mohawk sites in an attempt to identify and reconstruct exchange and interaction patterns between these two widely separated League members. X-ray fluorescence (XRF) and particle-induced X-ray emission (PIXE) spectrometry were employed to collect data on 15 elements. Using pottery as a baseline for each area, pipe data were utilized in a discriminant-function analysis to identify exotic pipes in Seneca assemblages from different time periods. The investigation focused on pipes because they were a probable item of exchange and because the symbolism of pipes and tobacco made smoking an important part of Iroquoian political protocol. Results showed that Mohawk pipes first occurred in Seneca assemblages sometime between A.D. 1590 and A.D. 1605. This is considered likely to reflect the inception of peaceful political relations between these two groups brought about by the final coalescence of the Iroquois Five Nations Confederacy. The approach developed for this study employed nondestructive analytical techniques applied to common classes of ceramic artifacts. As such, the methodology should be broadly applicable to other studies of interaction and exchange in this and other regions.

For the prehistoric inhabitants of the American Southwest and Northern Mexico, turquoise was not an essential commodity for daily life. Yet, over 56,000 pieces of turquoise were recovered with two burials from Pueblo Bonito, the first site excavated in Chaco Canyon, and more turquoise is found in sites in Chaco Canyon when compared to other sites throughout the southwestern United States from ca. A.D. 900 through 1150. It may have been a long-distance trade item, exchanged for copper bells or macaws from further south, but its primary function was as a ritual item within the regional system. Because turquoise is found in sites established early in the Chaco sequence, this review will examine data from earlier periods to suggest which Bonito phase developments were innovations or continuations of previous practices. Some ritual uses of turquoise followed by contemporary Puebloan people probably have roots extending back into the Chaco era.

Based on a model derived from an analysis of contemporary maize yields in Tennessee, Baden and Beekman claim that Mississippian yields would have ranged between 8 bu/acre (501.7 kg/ha) and 30 bu/acre (1,881.3 kg/ha). Using nineteenth-century observations of Native American farmers, I noted in 1999 that available maize yields ranged between 3.7 and 42.67 bu/acre (232.1 to 2,676.3 kg/ha), with a mean of 18.9 bu/acre (1,185.4 kg/ha) for groups that did not have plows. Consumptive yields would have been lower, probably closer to an average of 10 bu/acre (627.2 kg/ha). In this paper, I clarify the differences between potential yields, available yields to illustrate the advantages of my approach. I discuss some factors that affect maize plants prior to harvest, leading to available yields that may be lower than potential yields, and conditions that reduce the quantity of maize kernels available for consumption after the harvest. Baden and Beekman argue that modern agricultural technology provides a more reasonable baseline analog for modeling ancient maize productivity than nineteenth-century Native American technologies. In contrast, I explore agricultural yield data for Native Americans and Euroamericans from a number of tribes and states for 1850, 1867, and 1878. A comparison of these data shows that, overall, yields obtained by Native American farmers tend to be lower than yields for contemporaneous Euroamerican farmers. My approach using agricultural productivity data from nineteenth-century Native Americans, coupled with a consideration of potential, available, and consumptive yields, provides a plausible foundation for the evaluation of late prehistoric yields.

Positive results were obtained from protein residue analysis on three Clovis points from Wally's Beach, southwestern Alberta. Two tested positive for Equus, the third for a bovid, probably Bison or Bootherium. All genera are present in the site remains. This finding clearly demonstrates use of Equus by Clovis hunters. Four 14C dates indicate that the site was in use between 11,000 and 11,300 B.P.

In modeling the colonization of the Americas, Anderson and Gillam (2000) employ size estimates for vanguard forager bands that are of dubious reproductive viability in light of human incest prohibitions and variable sex ratios at birth.

Although the practice of food storage is important to many questions addressed by archaeologists, demonstrating its presence in archaeological contexts can be difficult or impossible. One potentially useful approach to meat storage is the concept of the Drying Utility Index, introduced by Lewis Binford (1978) to predict which carcass portions, with attached bone, will be selected for storage by drying. However, this index has not been widely used by zooarchaeologists, at least in part because the calculations involved in its derivation are extremely complex. This paper presents a new, simplified index, the Meat Drying Index, which is easier to calculate and more transparent than the Drying Utility Index, yet which retains all of its key attributes. This new index is applied to caribou bone samples from two regions: Binford's (1978) Nunamiut data from northern Alaska, and the contents of three caches from the Barren Grounds of Canada, near Baker Lake, Nunavut. In both cases, the Meat Drying Index correlates with the observed element frequencies as well as, or better than, the original Drying Utility Index. As a result, the new index may prove applicable to element distributions from a wide range of archaeological contexts in which storage of meat by drying is suspected.

Wood used in the construction of Chacoan great houses represents a class of bulk artifact collected and prepared for use in buildings that can be reasonably argued to be public structures. The organization of production is generally held to be within the framework of a corporate chiefdom, as defined by cross-culturally inspired position papers for the "Organization of Production" symposium on the Chaco phenomenon. The organizational requirements for the acquisition, processing, and transport of construction elements are discussed through the examination of harvest schedule, the description and comparison of beam treatments, and labor investment for the processing, transport, and stockpile management of the beams. The timing of harvest and the labor effort invested in construction wood is found to be different and more intense than in a sample of comparable-scale non-Chacoan buildings but within the means of self-paced, corporately motivated task groups operating under the parameters of seasonal household schedules. Because of the consistency of handling, and quality of treatment, we envision the development of skilled task groups, perhaps at the level of a formal fraternal society, under the guidance and organizing skill of a limited number of leaders or specialists. More centralized corporate direction may have been an aspect of organization for only a brief period after A.D. 1070.