ARCHAEOGEOPHYSICAL INVESTIGATIONS AT AN EIGHTEENTH-CENTURY CADDO SITE IN NACOGDOCHES COUNTY,EAST TEXAS

Abstract

The J. T. King site (41NA15) is an early-eighteenth-century Caddo habitation site in East Texas. Recent archaeogeophysical work (covering 2.5 ha) at the site has obtained unique data on the spatial organization of a Caddo settlement that was occupied at the time of the Spanish colonization of East Texas. Our interpretation of the magnetometer data is that there are 10 possible Caddo structures in the archaeogeophysical survey area. A few magnetic anomalies have been successfully ground truthed at the J. T. King site. These test excavations have demonstrated a positive correlation between magnetometer anomalies and the occurrence of Caddo architectural features.     

TOM JONES (3HE40): GEOPHYSICAL SURVEY AND SPATIAL ORGANIZATION AT A CADDO MOUND SITE IN SOUTHWEST ARKANSAS

Abstract

This article outlines a process that has facilitated discoveries of intrasite pattern, architecture, and diagnostic artifacts at the prehistoric Caddo mound site Tom Jones (3HE40) in southwestern Arkansas. A methodology of multisensor geophysical survey using electrical resistance, electromagnetic conductivity, gradiometry, magnetic susceptibility, high accuracy survey and mapping, and data georeferencing enabled by geographic information system technology has proven to be an efficient, effective, and essential component of an overall research plan. In addition to providing insights regarding the intrasite organization of an upland Caddo ceremonial mound center, this technologically integrated approach has established that Saratoga chalk geology and Blackland Prairie clays combine to form an advantageous medium for geophysical discovery.     

CONTINUING THE RESEARCH: ARCHAEOGEOPHYSICAL INVESTIGATIONS AT THE BATTLE MOUND SITE (3LA1) IN LAFAYETTE COUNTY,ARKANSAS

Abstract

The continuing use of archaeogeophysical methods at the Battle Mound site (3LA1) exemplifies the power of geophysics as a non-invasive, preservation-oriented, and economically feasible way to pursue the exploration of settlement patterning at the Middle and Late Caddo (ca. A.D. 1200–1680) mound site. Using these methods, a 1-ha (2.47 acres) area directly east of the large mound was surveyed using magnetic gradiometry and concatenated to the existing survey area. Results from the 1-ha survey provide further elucidation of the spatial structure and internal organization of the Caddo Indian occupation at the Battle Mound site.     

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.     

GEOPHYSICAL AND ARCHAEOLOGICAL INVESTIGATIONS AT THE CLEMENT SITE,A CADDO MOUND COMPLEX IN SOUTHEASTERN OKLAHOMA

Abstract

Since the 1960s, few professional archaeological excavations have been conducted at Caddo sites in southeastern Oklahoma. This article summarizes the initial phase of a research program designed to increase our knowledge of this area. Geophysical and archaeological investigations at the Clement site (34Mc8) were conducted during the summer of 2008 by the University of Oklahoma. These revealed deep middens, intact mound stratigraphy, and architecture, and suggest that Clement had multiple Caddo occupations spanning approximately 300 years.     

THE GROBIN DAVIS SITE: ARCHAEOGEOPHYSICS AND SETTLEMENT PATTERNS AT CADDO MOUND CENTERS IN SOUTHEASTERN OKLAHOMA

The Grobin Davis site (34MC253) is the best-preserved known prehistoric Caddo mound site in southeastern Oklahoma. The site, located along the Little River, consists of seven mounds arranged in a horseshoe configuration. Archaeological excavations at the site have been limited to a series of posthole tests and three 1-x-1-m units. Between November 2011 and February 2012, the Oklahoma Archeological Survey conducted geophysical survey of the bulk of the site, covering approximately 32,000 m² with a fluxgate gradiometer. This study provides important information about Caddo mound construction, settlement, and ceremonialism in southeastern Oklahoma and add to a growing body of literature on prehistoric Caddo community patterns.     

ZOOMORPHIC EFFIGY PENDANTS: AN EXAMINATION OF STYLE,MEDIUM, AND DISTRIBUTION IN THE CADDO AREA

Abstract

Caddo zoomorphic effigy pendants were crafted from a wide variety of raw material, such as freshwater mussel shell, Busycon perversum (whelk) marine shell, animal bone, and various types of soft stone. They have been documented at contemporaneous Late Caddo (A.D. 1400–1700) sites along the Red River in northeast Texas, southwest Arkansas, and northwest Louisiana; the Black Bayou, Big Cypress Bayou, and upper Sabine River basins in northeast Texas; the Ouachita River in south-central Arkansas; and the Arkansas River in central Arkansas and eastern Oklahoma. This paper describes the development of a comprehensive corpus that investigates stylistic groups, differential raw material or medium utilized, and the spatial distribution of zoomorphic effigy pendants throughout the Caddo area. Results reveal north-south heterogeneity, suggesting the presence of broader traditional cultural narratives associated with a complex idea that is manifest regionally in distinct stylistic forms and linked to Caddo beliefs concerning Beneath World themes. Additionally, this stylistic and spatial analysis offers an additional dataset to further explore social, political, and economic linkages among and between contemporary Caddo groups around A.D. 1500.     

RADIOCARBON TRENDS AND THE EAST TEXAS CADDO TRADITION (CA. A.D. 800–1680)

Abstract

Through the employment of radiocarbon (¹⁴C) dates as data, we use the date combination process to refine site-specific summed probability distributions for 555 dates from Caddo sites (n = 19) in East Texas with 10 or more ¹⁴C dates. Summed probability distributions are then contrasted across river basins and natural regions with the remainder of the East Texas Caddo Radiocarbon Database (n = 338 dates from 132 other Caddo sites), highlighting the temporal and spatial character of Caddo archaeological sites throughout East Texas.     

A quantitative assessment of intraspecific morphological variation in Gahagan bifaces from the southern Caddo area and central Texas

ABSTRACT

This investigation aggregates intact or reconstructed Gahagan bifaces from the southern Caddo area and central Texas to test the hypothesis that Gahagan biface morphology differs between the regions. The Gahagan bifaces (n=102) were scanned, then analyzed using a novel landmarking protocol and the tools of geometric morphometrics. Results provide a preview of the significant differences in Gahagan biface morphology expressed between the southern Caddo area and central Texas regions. The size discrepancy represents an inversion of current theoretical constructs that posit a decrease in tool size thought to articulate with an increase in distance from the raw material source. It is posited that the contrasting morphologies represent two discrete communities of practice; one (emergent Caddo horticulturalists) where Gahagan bifaces were enlisted primarily for burial and ritualistic activities, and the other (central Texas hunter-gatherers) where Gahagan bifaces were utilized over a longer time span in more practical and utilitarian contexts.     

AMPHIBIAN AND REPTILIAN IMAGERY IN CADDO ART

Abstract

Although Caddo pottery is most recognized for its nonrepresentative decorative patterns, artists also incorporated zoomorphic figural components into their designs. Amphibian and reptilian depictions occur not only on pottery vessels but also on pipes, figurines, and pendants. Five modes of depiction occurred in the Caddo archaeological area, spanning the period from ca. A.D. 1100 to 1700. These depictions represent local expressions of the Beneath World creatures that were recognized by people across the Eastern Woodlands. These expressions embodied the power of the Beneath World and played a role in mediating with that power in regards to agriculture, travel, death, and political processes. The Caddo people integrated these zoomorphic representations into their distinctive tradition of pottery design, creating a unique cultural expression of a broader cosmological theme that was present throughout the Mississippian tradition.     

THE USE OF SHELL-TEMPERED POTTERY IN THE CADDO AREA OF THE SOUTHEASTERN UNITED STATES

Abstract

Freshwater mussel shell was used as a temper in the manufacture of ceramic vessels by potters in the Caddo area of the southeastern United States after ca. A.D. 1300. This was at least one or two centuries after it became the dominant temper used by aboriginal groups in much of the Eastern Woodlands but generally contemporaneous with shelltempered usage in parts of the Southern Plains. The introduction of shell temper was variable across the Caddo area, and in certain regions its use was negligible in ceramic vessel assemblages until the sixteenth and seventeenth centuries but then was rapidly adopted as the dominant temper employed in vessel manufacture, particularly for utility wares. In the traditional territory of the historic Hasinai Caddo in East Texas, shell temper did not appear in vessels until the early eighteenth century, and then only in minor amounts on presumed trade vessels.     

THE 1974–75 EXCAVATIONS AT MOUND BOTTOM,A PALISADED MISSISSIPPIAN CENTER IN CHEATHAM COUNTY,TENNESSEE

Abstract

Mound Bottom (40CH8) is a large complex of 14 prehistoric mounds located in a horseshoe-shaped bend of the Harpeth River, a tributary of the Cumberland, in Cheatham County, Tennessee. It, together with another mound group 3 km to the south known as the Pack site (40CH1), received sporadic archaeological attention during the first half of the twentieth century, but it was not until 1974 that systematic work was carried out at either mound center. Over portions of that and the following year, Mound Bottom was mapped in detail and excavations were carried out to document the range in variability of mound construction and community structure. Six mounds were tested and 19 houses were partially or totally excavated. House types included both single-set-post structures and wall-trench structures. Calibrated radiocarbon dates from Mound Bottom span about a 600-year period from the eighth through the fourteenth centuries.     

The Iron Age landscape of Alcoi Valley,eastern Iberia: Agricultural intensification and sociopolitical dynamics

Abstract

New archaeological survey data are combined with previous evidence to examine the rural landscape during the Iberian Iron Age in the Valencia region of eastern Spain. One goal was to understand the settlement pattern and agricultural intensification through manuring. The second objective was to address the socioeconomic aspects of changes in the landscape. It is possible to trace the emergence of a hierarchical settlement pattern in the Iberian Iron Age in which large fortified settlements carried out the most important functions of control and exploitation of the territory, extending their authority over small rural villages and farmsteads. This pattern is associated with the complex socioeconomic structures and political organization of early Iberian states.     

A NEW LOOK AT KINCAID: MAGNETIC SURVEY OF A LARGE MISSISSIPPIAN TOWN

Abstract

Despite extensive work by the University of Chicago in 1934–44, Kincaid has remained one of the least understood of the large mid-South Mississippian mound complexes. Between 2003 and 2009, large-scale magnetic gradient survey was done on 33.6 ha of the site, roughly half of the total site area and 65 percent of the larger and more accessible Massac County portion. The survey was highly successful, revealing large numbers of cultural features, including palisades, structures, pit features, and midden areas. This paper presents the preliminary results of the geophysical survey, complemented by small-scale groundtruthing excavations. Together these have significantly expanded and refined our understanding of this large prehistoric town. Kincaid is clearly much larger than once thought, both in terms of total site area and area of habitation. The site also exhibits much greater internal complexity, as evidenced by internal palisades and numerous small mounds and earthen platforms.     

A TOWN AT THE CROSSROADS: SITE-WIDE GRADIOMETRY SURVEYING AND MAPPING AT OLD TOWN RIDGE SITE (3CG41) IN NORTHEASTERN ARKANSAS

Abstract

Gradiometry survey at the Old Town Ridge (3CG41) site, a stockaded Middle Mississippian period town in the central Mississippi River Valley of Arkansas, demonstrates the efficacy of a broad-coverage, site-encompassing remote sensing methodology for initial interpretation of intrasite organization and complexity. Site access, time constraints, deep plow furrows, and cotton plant “stubble” associated with ongoing agriculture at the site defer the efficient use of a site-wide multisensor prospection methodology. However, a gradiometry survey identified multiple anomalies consistent with prehistoric structures, earthworks, earthquake liquefaction, and other interpreted features encompassed within the remains of a 7-ha, rectangular enclosure. Aerial photography, topography, and preliminary archaeological ground truthing provided additional information for analysis and interpretation.     

Integrated seismic tomography and ground-penetrating radar (GPR) for the high-resolution study of burial mounds (tumuli)

The study primarily aims at providing adequate imaging resolution of large and prominent targets of archaeological interest, such as pyramids and tumuli, at all depth levels. We implemented an integrated seismic tomography and georadar (STG) technique to perform high-resolution imaging and characterization of tumuli (burial mounds). We tested the proposed technique on a preserved late Bronze Age burial mound in northern Italy, for which STG succeeded in performing an accurate 3-D reconstruction of the structure and stratigraphy as proved by later archaeological excavations. We completed two transmission seismic tomography measurements, at present ground level and at 1.5 m elevation, with a 24-channel seismograph and 15° angular separation between geophones. The ground-penetrating radar (GPR) dataset encompasses 12 250 MHz radial profiles and 12 common mid point gathers for velocity analysis. Shallow layers of the mound are successfully imaged by GPR, whilst the structure of the deep central part of the tomb is reconstructed from seismic traveltime inversion. In particular, GPR images lenses and layers of sediments forming the external part of the tumulus, evidences of a looting attempt, peripheral structures associated with later exploitation of the mound (furnaces) and, in the external sector of the tumulus, the top of the deep layer of silty sediments covering the funeral chamber. Tomographic results reveal seismic velocity anomalies of potential archaeological interest at ground level, which were successively validated by archaeological excavations. The integration of GPR and tomographic datasets is an effective strategy to overcome the imaging and interpretation problems related to the structure of such peculiar funeral monuments. STG can be applied to a virtually unlimited dimensional range and requires a limited data acquisition, processing and inversion effort. The results of the study allowed the identification of the funeral chamber and a detailed imaging of layering and structural details.     

THE BILTMORE MOUND AND HOPEWELLIAN MOUND USE IN THE SOUTHERN APPALACHIANS

Abstract

Biltmore Mound, located on the Swannanoa River in Asheville, North Carolina, was constructed over a Connestee phase habitation, the earliest evidence dating to about A.D. 300. Mound construction began sometime between A.D. 400 and 550, with the second to last mound stage constructed about A.D. 580–600. Because of the diverse contexts and the excellent preservation of faunal remains, we are able to provide some insights into Connestee ritualism at Biltmore Mound. The Biltmore Mound was a platform used to support large public structures for ritual and ceremonial activities. It was constructed of varying colored and textured soils from a variety of source areas that arguably had symbolic importance. The mound was primarily built out (rather than up) with several mantles that may have comprised a complete ritual cycle of mound construction.     

Archaeological Site or Natural Marine Community? Excavation of a Submerged Shell Mound in Ninigret Pond,Rhode Island

ABSTRACT

Submerged shell midden sites and natural shell deposits can have similar characteristics and can be difficult to distinguish archaeologically. We excavated two test units from a large (at least 35 m×70 m) submerged shell mound in Fort Neck Cove in southern Rhode Island to assess whether it was natural or cultural in origin. This mound had been recognized as a potential archaeological feature as early as the 1970s. Excavation, radiocarbon dating, and subsequent laboratory analysis of excavated materials suggest that the mound was a natural oyster reef rather than a submerged archaeological site. No artifacts were found; there was no clear evidence for human modification of any shells; small species that would not have been targeted as food were present; and δ¹³C values of oyster shells from the mound were consistent with freshwater input into their growth environment, suggesting that they grew in an estuarine environment that did not exist prior to the inundation of the ponds. The stratigraphically oldest radiocarbon date we could obtain (430–190 cal BP, 2σ range), from 70 cm below the pond floor, placed deposition of shells at least 3,000 years after the inundation of the pond. The excavation methods that we used and the process of testing, irrespective of whether the feature is cultural, are valuable contributions to the methodological literature on submerged site archaeology and help provide insight for other researchers working to discern natural from cultural shell midden sites.     

Sacred landscapes of the southern Brazilian highlands: Understanding southern proto-Jê mound and enclosure complexes

Fieldwork involving survey, detailed topographic mapping, and excavations in Pinhal da Serra, Rio Grande do Sul, Brazil, has revealed a highly-structured landscape revolving around funerary/ceremonial structures that began around A.D. 1000. This paper focuses on the results of detailed topographic survey of mound and enclosure complexes and their interpretation in light of southern Jê ethnohistorical and ethnographic data. We compare the architectural patterns of mortuary architecture from this study with fundamental spatial features of historic Kaingang’s social organisation, mortuary rituals and cosmogony myth. Our results suggest historical continuity in the organisation of space in cardinal directions (E–W), topography (low and high places), and in circular/concentric spatiality revealed in the southern proto-Jê mound and enclosure complexes. It is argued that small paired mound and enclosure complexes are associated with the material representation of a dual ranked opposition materialised in proto-Jê moiety cemeteries where important persona were buried.     

Reduction of topography effect in inductive electromagnetic profiles: application on coastal sambaqui (shell mound) archaeological site in Santa Catarina state, Brazil

We present results of electrical conductivity profiles obtained with inductive electromagnetic geophysical method in Santa Marta archaeological site, Santa Catarina State, southern Brazil. This site is a sambaqui (shell mound), in which several human occupation remains are found during pre-colonial period such as buried lithic and bone artifacts, fire-place, etc. Most of these mounds include as well many human burials, which, in many cases, point to funerary ritual as a main agency for mound building. A set of profiles of apparent electrical conductivity and magnetic susceptibility was acquired in two sites aiming the identification of geophysical anomalies with potential interest for excavation. To enhance conductivity data, we applied an effective procedure to remove topographical effects in the apparent conductivity measurements, which are rather conditioned by the presence of a variable water table depth or conductive sediment layer. A linear dependence among conductivity values and the site elevation provided a simple linear model to remove the influence of topography. Corrected electric conductivity maps substantially improved the definition of anomalies, many of them rather subtle in raw data images. Corrected maps also show a better adherence with magnetic susceptibility maps, both of them identifying archaeological structures of interest: a well-structured fire-place and a concentration of ceramic fragments.