George T. Jones

Lithic source use and paleoarchaic foraging territories in the Great Basin

Paleoarchaic (11.5–8.0 ka) occupants of the Great Basin encountered numerous lithic sources as they moved across foraging territories. Source provenance and lithic technologic analyses applied to the tools manufactured from these source materials elucidate several aspects of mobility, including the geographic scale of material conveyance and extent and possible routes of population movement. This research indicates that central Great Basin groups traversed large subsistence territories, extending more than 400 km from north to south, with mobility tactics probably keyed to the distribution of resource-rich wetlands. Changes in source representation parallel warming and drying trends, suggesting that Paleoarchaic foraging ranges shifted as wetlands diminished after about 9.5–8.5 ka.

Rocks are heavy: transport costs and Paleoarchaic quarry behavior in the Great Basin

Central place foraging models are used to investigate assemblage variability at two Paleoarchaic (terminal Pleistocene/early Holocene) dacite quarries in the central and eastern Great Basin. Our analyses focus specifically on biface reduction and how varying degrees of reduction relate to the costs of transporting the resulting products upon departing the quarry. Our results suggest that when the distance to be traveled to a residential base is great, reduction will proceed further at the quarry than if the residential base is fairly close. Further, a residential site assemblage will consist of bifaces at later stages of reduction than its associated quarry.

Elements of an inclusive evolutionary model for archaeology

Abstract In the following pages it is argued that the transformational, progressive framework of Cultural Evolution often employed in archaeology is limited to the extent that it can but rarely function in an explanatory capacity. It is proposed that the goals of a processualist archaeology can be met more fully by the scientific, inclusive evolutionary paradigm discussed here. Components of this new paradigm, based on a selectionist perspective of change, are introduced. In sum, it is suggested that the construction of an evolutionary theory applicable in archaeology requires that artifacts at any scale be interpreted as part of the human phenotype, and that fitness be assessed through the concept of replicative success. In this fashion, selective mechanisms may be identified and processual explanations of change generated.

The Terminal Pleistocene/Early Holocene archaeology of the Great Basin

The archaeological record of the Terminal Pleistocene and Early Holocene in the Great Basin consists largely of surface lithic artifacts, and consequently research has concentrated on typological and technological studies. The small suite of radiocarbon dates available suggests human presence in the Great Basin by at least 11,500 B.P., but evidence of subsistence is scanty. Technological analyses as well as artifact distributions suggest that the earliest occupants of this region subsisted primarily by hunting, possibly large terrestrial game. As elsewhere in North America, the earliest occupants of the Great Basin faced a rapidly changing environment, with the drying of shallow pluvial lake remnants and the creation of new habitats. Paralleling these changes, significant subsistence resource diversification coupled with expansion into new environments is evident by the close of the Pleistocene.

CLOVIS AND WESTERN STEMMED: POPULATION MIGRATION AND THE MEETING OF TWO TECHNOLOGIES IN THE INTERMOUNTAIN WEST

The Intermountain West is rarely included in discussions of the North American Paleoindian record, largely because there is so little evidence for Clovis in that region. What has been ignored in these discussions is the presence of an early record in the region associated not with Clovis, but with a different technology, the main diagnostic of which is the large, contracting stemmed projectile point. Dates associated with this technology are comparable to the earliest Clovis dates on the Plains. An examination of the spatial and temporal distributions of Clovis diagnostics suggests that elements of this technology arrived relatively late in the Intermountain West, apparently the termination of a diffusion (or migration) process that began in the southern Plains or Southeast, moved northward along the Rocky Mountain front, and eventually onto the Columbia Plateau. We argue that initial colonization of the intermountain region most likely involved groups moving inland from the Pacific coast carrying a non-Clovis technology, which was already in place by the time Clovis technology arrived.

Clovis Age Western Stemmed Projectile Points and Human Coprolites at the Paisley Caves

They Walked Together Paisley Cave in Oregon provides some of the earliest evidence for humans in North America. Jenkins et al. (p. 223) provide a wide variety of additional evidence of early human occupation of this site, including a series of radiocarbon ages extending back to nearly 12,500 radiocarbon years ago (about 14,500 calendar years ago). The find includes examples of projectile points representative of the Western Stemmed Tradition dating to about 11,100 radiocarbon years ago. The Western Stemmed Tradition has been thought to have evolved after the dominant Clovis technology, but the find suggests that the two cultures overlapped in time. The age of a Western Stemmed projectile point implies that this culture overlapped with the Clovis culture in North America. The Paisley Caves in Oregon record the oldest directly dated human remains (DNA) in the Western Hemisphere. More than 100 high-precision radiocarbon dates show that deposits containing artifacts and coprolites ranging in age from 12,450 to 2295 14C years ago are well stratified. Western Stemmed projectile points were recovered in deposits dated to 11,070 to 11,340 14C years ago, a time contemporaneous with or preceding the Clovis technology. There is no evidence of diagnostic Clovis technology at the site. These two distinct technologies were parallel developments, not the product of a unilinear technological evolution. “Blind testing” analysis of coprolites by an independent laboratory confirms the presence of human DNA in specimens of pre-Clovis age. The colonization of the Americas involved multiple technologically divergent, and possibly genetically divergent, founding groups.

Toolstone Selection and Lithic Technology in Early Great Basin Prehistory

Abstract Although research concerning late Pleistocene/early Holocene populations in the Great Basin of western North America has been ongoing for many years, little is known concerning the adaptive strategies practiced by these people, whose culture is widely known as the Western Pluvial Lakes Tradition. Work has tended to focus on cultural and temporal similarities rather than on functional variability. In order to shift the focus of this research, questions concerning settlement location and distribution, technology, and artifact assemblage diversity, among others, must be addressed. This paper takes an initial step toward accomplishing this goal by focusing on lithic technology and differential material use during the late Pleistocene/early Holocene period. We find through a review of published sources and in our own work in eastern Nevada that the choice of material for certain tool categories during this early period was conditioned, at least in part, by the mechanical properties of the raw material...

Bias and Archaeological Classification

Archaeologists increasingly have become aware of the effects of bias and have made strides to identify and correct for error introduced in such areas as sampling and recovery techniques. Much less attention has been paid to the significance of bias introduced during artifact analysis. The potential for analyst-induced error is discussed in terms of: (1) the explicitness of class definitions, (2) differences in perception among analysts, and (3) changes in a single analysts perception over time. Using a regression-based approach, sources of possible analytic error are detected in an archaeological data set recovered from Steens Mountain, Oregon.

Reconsidering Paleoarchaic Mobility in the Central Great Basin

Abstract Analyzing technological patterns and source provenance of stone tools, Jones, Beck, Jones, and Hughes (2003) argue that Paleoarchuic groups of the central Great Basin moved within an extensive home range, perhaps reaching 400 km in its longest dimension. The Eastern Conveyance Zone, as they refer to this territory, was aligned with the predominantly north-south trending mountains and valleys of the province. To evaluate this model of mobility, artifacts were collected from the southern part of the Eastern Conveyance Zone for geochemical characterizations. X-ray fluorescence spectrometry of 183 obsidian and fine-grained volcanic artifacts identified 12 known rock sources, all from the southern and central sections of the zone. No northern sources are represented among artifacts studied. Revisions of the Eastern Conveyance Zone model are considered in light of these results.

Chronological Resolution in Distributional Archaeology

The paradigmatic changes in archaeology during the 1960s and 1970s saw refocusing of research interests from culture-historical problems to issues of human adaptation and attendant shifts in research design, from concentration on single sites to a concern with entire regions. Early in these considerations, some archaeologists concerned with the prehistory of mobile hunter-gatherers recognized that the study of land use, adaptation, and processes leading to stability or change could not be conducted solely in terms of regional site records (e. g., Thomas 1971, 1975; Dancey 1973, 1974). Undoubtedly, those aspects of land use that contributed rather small quantities of material remains to the archaeological record that might be widely dispersed over space was an important analytic domain. They suggested instead that artifacts, all artifacts, rather than sites become the focus of discovery and analysis. We refer to this perspective as distributional archaeology, although other terms like nonsite approach (Thomas 1975) and off-site archaeology (e. g., Foley 1981a) are presently in use.