Analyses of archaeological data from the La Entrada region in northwestern Honduras demonstrate that central-place theory applies to the regional settlement system during the Late Classic period. The configuration of the regional central-place system appears to have been oriented to the local exchange of subsistence goods and to the minimization of energy expenditure in their movement. The distribution patterns of obsidian artifacts vary significantly among the hypothetical sustaining areas of centers, corroborating the reconstruction of a central-place system. This also suggests that political factors affected the circulation of certain materials and that basic economic spatial units in Classic Maya society were relatively small.

Investigations at the Ramaditas site (Guatacondo Valley, northern Chile) were successful in the discovery of small quantities of ancient metallurgical slag, copper ore, and metal from sealed archaeological contexts dating to the first centuries B. C., and in the discovery of adjacent off-site furnace ruins that appear to be contemporaneous. Laboratory tests are positive in identifying both the surface and subsurface slag as a copper smelting by-product. These results are significant in that they demonstrate that copper smelting and metal manufacture were taking place in the Atacama in antiquity, constituting the first conclusive proof of what many Chilean scholars have anticipated since the early 1970s. These results support the view that the mining of minerals and the winning of metals played a valuable role in the economy of the first sedentary villages of interior Chile, in the foothills and valleys that rim the Atacama desert.

The acquisition and use of exotic, valuable, and ritually important elite goods is a prominent feature of many imperial political economies. After an extensive review of the archaeological and documentary sources on one specific valuable in the empire of Chimor, this paper analyzes the visual representation of such goods, an aspect seldom addressed by archaeologists. An architectural relief recently excavated at Chan Chan, the capital of Chimor, sheds new light on the use of exotic materials and long-distance trade and exchange along the Pacific coast of South America in the late Prehispanic period. This relief, named "Los Buceadores" (The Divers) for the principal imagery depicting Spondylus divers, is important for elucidating the role of this valuable in the early development of the Chimú empire. It is argued that the Chimú rulers sponsored a long-distance exchange network during an early stage of the expansion of the Chimú polity and that the fruits of this network, particularly Spondylus, formed a critical element in the formation and maintenance of the ritual and economic basis of power for the expanding state.

This study reports on changing settlement patterns in the lower Tiwanaku Valley during the Formative (1500 B. C.-A. D. 100), Classic (A. D. 400-800), and Postclassic (A. D. 800-1100) periods. Based on the association of agricultural features with these site distributions, as well as the consideration of ethnohistoric and ethnographic information, it is argued that fundamental principles of the political and economic organization of the Aymara ayllus and markas can be inferred from the archaeological evidence. It also is suggested that Tiwanaku articulated local elites through mechanisms of reciprocity and common ideological denominators rather than through direct intervention and control of local sociopolitical hierarchies.

Temporal changes in material culture normally have been used by archaeologists to reconstruct the cultural history of an area or site. In the case of the Caribbean, shifts in artifactual style have been used to trace prehistoric migrations and interactions between different cultural groups. Unfortunately, there have been few attempts to explain these changes in terms of the social structures of these cultures. This paper reviews the archaeological evidence for cultural change in eastern Puerto Rico and proposes a model to explain it. Basically, the model suggests that changes in material culture in Puerto Rican prehistory are related to the development of social complexity. Shifts in decoration and types of artifacts are seen as an attempt by elite groups to have greater control over the symbolism represented in the artifacts in order to acquire and maintain their power. These changes are not abrupt, but gradual, as social organization evolves from simple to more complex chiefdoms.

Recent investigations in the Casma Valley on the north-central coast of Peru have uncovered a series of circular and rectangular/square structures, each containing a central hearth associated with either four subfloor ventilation shafts or a single open ventilation trough. The structures date to the Late Preceramic period (2500-1800 B. C.) and the Initial period (1800-900 B. C.). All are small and were originally roofed with perishable materials to hold in heat and smoke from the central hearth. It seems likely that these ventilated hearths represent a coastal variant of the Kotosh Religious Tradition that has been well documented in the Peruvian Highlands. The structures probably served as ritual chambers for small groups of people, somewhat analogous to the sweathouses of various Native American groups.

The present paper describes obsidian sources and compositional analysis performed on obsidian recovered from natural flows in the upper Maule River basin (central Chile). We compare the composition of this obsidian with that of obsidian artifacts recovered from selected archaeological sites both in the middle and lower valley of the Maule River and in the Argentinian provinces of Mendoza and Neuquén. The results indicate that the collected obsidian samples can be separated into six major groups. Most of the obsidian artifacts are assignable to a particular source area, but there still remain some unknown sources. We conclude that the Laguna del Maule source area was exploited from at least 50 A.D. onward and that the material was distributed to sites located more than 200 km from the source.

Wetland research in northern Belize provides the earliest evidence for development of agriculture in the Maya Lowlands. Pollen data confirm the introduction of maize and manioc before 3000 B.C. Dramatic deforestation, beginning ca. 2500 B.C. and intensifying in wetland environments ca. 1500-1300 B.C., marks an expansion of agriculture, which occurred in the context of a mixed foraging economy. By 1000 B.C. a rise in groundwater levels led farmers to construct drainage ditches coeval with the emergence of Maya complex society ca. 1000-400 B.C. Field manipulations often involved minor modifications of natural hummocks. Canal systems are not as extensive in northern Belize as previously reported, nor is there evidence of artificially raised planting platforms. By the Classic period, wetland fields were flooded and mostly abandoned.

A new emblem glyph and place name, which depicts tied hair, is identified in Classic Maya hieroglyphic inscriptions from the upper Usumacinta River region of Chiapas and Guatemala. Emblem glyphs are used as titles of rulers, whereas place names indicate a person"s place of origin or where events took place. An interesting discovery from glyphic texts with this "Tied-Hair" glyph is that rulers at the large sites of Bonampak and Lacanhá, Chiapas, originated from the Tied-Hair site. Maya sites with emblem glyphs are often viewed as being politically independent polities ruled by a local patrilineage. Evidence discussed here suggests that Maya centers could have been ruled by noble males from other sites and that some polities were made up of several centers. This complex sociopolitical organization may have been created through dynastic alliances, through inheritance, or by military conquest. Classic Maya political integration then may have been similar to that of the Aztec, Mixtec, and Maya of Postclassic Mesoamerica.

The function of elite Maya architecture should not always be interpreted literally, for it may also reflect metaphorical and semantic extensions best studied through iconography, hieroglyphic texts, ethnohistory, and ethnography. This holistic approach is employed to help resolve puzzling features of the Cross Group sanctuaries at Palenque, Mexico. The Cross Group likely served as the setting for symbolic sweatbaths, probably involving effigies of supernaturals under the care of Kan Balam, the Palenque ruler who commissioned these structures. This and other arguments situate such information within an understanding of metaphor in Maya architecture.

Archaeologists have long noted the presence of green obsidian artifacts in a number of Maya sites and have recognized that they were manufactured from the obsidian of the Pachuca source in central Mexico. Viewed as evidence of Teotihuacán influence, these finds were initially explained in economic terms as commodities in an exchange of goods that had a substantial impact on the economies of the Maya and on the development of the obsidian industry in Teotihuacán. However, when the contexts of the finds are examined it becomes clear that the significance of the artifacts was more symbolic than economic. The forms include prismatic blades, bifacially worked points and knives, needles, sequins, and some eccentrics. These are often recovered from ritual contexts, in association with other evidence of Teotihuacán influence. They apparently served to express a variety of relationships with Teotihuacán, ranging from actual Teotihuacanos proclaiming their identity to the attempts of Maya elite to forge some social affiliation with the city. Although most of the finds of green obsidian consist of only one or a few pieces, some contexts, such as the tombs of mounds A and B at Kaminaljuyú, produced more substantial amounts. Nevertheless, despite these occasional impressive finds, green obsidian does not seem to have been a major import, and it is clear that the Teotihuacán obsidian industry had largely attained its Classic-period structure before the Maya demand developed. Although the flow of central Mexican obsidian to the Maya region was not negligible, it could not in itself have had a major effect on either economic system.

This article compares domestic subsistence, craft production, and ritual at several excavated apartment compounds in Teotihuacan, Mexico. A new methodological approach for studying activity areas was tested in a multifamily compound at Oztoyahualco 15B:N6W3 with the purpose of obtaining information on specific activities attributable to particular households. This approach combines the identification and mapping of chemical compounds in stucco floors with pollen, phytolith, botanical, and faunal analyses. Together with the distribution of particular types of artifacts, ritual objects, and debris, these data permit an evaluation of the corporate character of certain activities.

Incised pebbles found at the mid-Holocene, Middle Preceramic period Ostra Base Camp site on the Peruvian north coast demonstrate long-distance links to coastal Ecuador, 700 km to the north. The artifacts belong to a northwestern Andean pebble-figurine tradition associated with the tropical coast. Environmental indicators at the Ostra site show a warm-water lagoonal environment, unlike the modern cold-water conditions of northwestern Peru but similar to modern Ecuador. The Ostra site dates between ca. 5500 and 6250 B.P. (3550 and 4300 B.C.), during a hiatus in the coastal Ecuadorian record, so the link to Ecuador provides the earliest evidence of long-distance cultural interaction between these regions. Until contemporary sites are found in Ecuador, the Ostra Base Camp site provides our only example for this time of tropical coastal cultures of the northwestern Andean interaction sphere.

A spatial analysis of rock art located within the lower Pecos region of southwest Texas and northern Mexico reveals the presence of a recurring motif that depicts anthropomorphic figures passing through an opening in a serpentine arch. An extensive review of the ethnographic literature and archaeological record of cultures within Mesoamerica and the Gran Chichimeca indicates that this motif is widespread and generally associated with specific beliefs about the shamanic journey into the spirit world. Based on analogies drawn from the ethnographic literature, the lower Pecos region motif can be interpreted as a pictographic representation of the shamanic journey made by Archaic Chichimecans into the spirit world. The evidence also indicates that the cosmologies of the cultures within Mesoamerica and the Gran Chichimeca were well established in the Chihuahuan Desert at least 4,000 years ago.