A comprehensive numerical chronology for the pre-Columbian cultures of the Palpa valleys,south coast of Peru

Before the arrival of the Spaniards in Peru in 1532, many different societies flourished in the coastal desert of southern Peru. Of these, one of the best known is the Nasca culture (living in the area between about 260 cal BC and 640 cal BC.), which created the famous geoglyphs on the desert floor. In this paper we present a numerical chronology for the cultural development in the valleys of Palpa, in the northern part of the Nazca region, which spans the time from the Archaic Period (starting there around 3760 cal BC) to the Late Intermediate Period (terminating with the arrival of the Spaniards in 1532 AD). The chronology is based on more than 150 ¹⁴C samples collected by our project from well-documented archaeological excavations of 17 different sites in and around Palpa. Thanks to the advanced AMS-¹⁴C dating technique, demanding only few milligrams of organic material, we could focus on samples of plants, like beans, corn, or reed, representing single years of growth or use, and also on delicate materials like straw from clay bricks (adobe) and textiles. All single ¹⁴C dates were combined to cultural phases using a Bayesian statistical model, implementing the a priori information of the archaeological contexts, and adopting the relative ceramic chronologies available for this area.     

河北及京津地区早中全新世文化的时空分布及其气候环境因素

本文根据考古学14C年代数据和考古遗存情况,结合高分辨率的地层和古气候研究资料,分析了河北及京津地区早中全新世文化的时空分布格局以及影响遗址分布的地貌和气候因素。该地区早中全新世文化时间序列为:早期新石器时代文化(10,000~8,800 yr BP)、新石器早中期之间的文化缺环(约8,800~7,300 yr BP)、7,300~6,500yr BP的磁山.兴隆洼.北福地一期三大文化系统并立发展时期以及6,500~6,000 yr BP的前仰韶文化时期。文化序列与气候序列对比发现:文化发展很大程度上受到气候条件的制约。从文化分布空间来看,具有如下特征:首先,早中全新世时期的文化分布在与当时海岸线平行的弧形地带上,这种分布格局与气候和地貌条件有关。在排除了地势高亢和海侵影响地区后,太行山东麓到古海岸线之间的弧形地带成为最佳选择。其次,从遗址分布高度来看,当时人仍居住在较高地貌面上,海侵及众多湖沼阻止了人类向东部平原腹地迈进的步伐。     

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.     

Palaeoenvironmental and chronological investigations of the Magdalenian sites of Goyet Cave and Trou de Chaleux (Belgium), via stable isotope and radiocarbon analyses of horse skeletal remains

Trou de Chaleux and Goyet are caves situated less than 30 km apart in Belgium that contain stratified Magdalenian artefacts and butchered faunal remains. Published radiocarbon dates suggest that both sites were contemporaneously occupied during to the Late-glacial interstadial. It has previously been suggested that the Trou de Chaleux Late-glacial faunal remains might be slightly older than those at Goyet Cave, and that Trou de Chaleux has two phases of occupation during the Late-glacial interstadial. However, the limited number of radiocarbon dates currently available makes it impossible to determine whether the sites are truly contemporaneous, and the assessment of their absolute chronologies is complicated by a plateau in the calibration curve. In this paper, bone collagen δ¹³C and δ¹⁵N signatures of horse bones from the two sites are used to reconstruct local palaeoenvironments. We hypothesise that if occupations at the two sites were contemporaneous, the horse collagen δ¹³C and δ¹⁵N isotope signatures from both sites will be similar, since comparable carbon and nitrogen isotopic values would reflect similar diets, ecologies and environments. To provide clear dating parameters, new AMS radiocarbon determinations are also presented. Results show that horse collagen δ¹³C and δ¹⁵N isotope signatures at the two sites are different, indicating that the populations were not subject to similar diets, ecologies and environments. The new radiocarbon dates confirm that the horse bones from Trou de Chaleux date to the Late-glacial interstadial, but they also show that in Goyet Cave Horizons 1 and 2, older horse remains dating to ca. 32?000–27?000 ¹⁴C yr BP are mixed with Late-glacial horse remains. The δ¹⁵N values of the Goyet Cave horse bones radiocarbon dated to the Pleniglacial are substantially higher than those that have Late-glacial radiocarbon dates. Therefore, we now hypothesise that the majority of the horse bones isotopically analysed from Goyet Cave Horizon 1 are Pleniglacial in age. Statistical analysis of the radiocarbon dates indicates that the Late-glacial occupation at the two sites was contemporaneous, and that while there may appear to be two phases of occupation at Trou de Chaleux, this may be an artefact of the radiocarbon calibration curve.     

EARLY WOODLAND SETTLEMENT AND MOUND BUILDING IN THE UPPER TENSAS BASIN,NORTHEAST LOUISIANA

Abstract

Traditionally overlooked because it lacks hallmarks of material and cultural complexity, Early Woodland in the Southeast is an interval of significant transformation in material culture, settlement, and social organization. Investigations at four sites in northeast Louisiana provide insights into changes taking place at this time. These sites are situated on a crevasse splay created by flooding at the end of the Archaic. This flooding is associated with an occupation hiatus ca. 3000–2500 cal B.P. Evidence suggests a rapid colonization of the crevasse splay by people using Tchefuncte pottery, and there is no evidence at these sites of stratigraphic or cultural continuity from Poverty Point. The Early Woodland occupation in the study area dates ca. 2400–2100 cal B.P., which is later than dates associated with Early Woodland in the Pontchartrain Basin and contemporary with Lake Cormorant culture sites farther north. Early Woodland in northeast Louisiana is marked by a diagnostic Tchefuncte ceramic assemblage and the presence of a settlement system composed of small villages or hamlets nucleated around a conical mound that presumably served as a ceremonial/ritual center. This mound was erected very rapidly; radiocarbon dates suggest it was constructed in no more than 10 years. Although mound building has been suspected, this is the first conclusive evidence it was an aspect of Tchefuncte settlement and ceremonial practices. Data from these sites bear on the question of cultural and demographic continuity and change at the Archaic to Woodland transition. Previous models emphasize continuity of populations with ceramic technology and styles diffusing into the lower Mississippi Valley. In contrast, our data support a model of Early Woodland repopulation of the lower Mississippi Valley from the south and east following a prolonged period of regional abandonment.     

Living in an Egyptian Oasis: Reconstruction of the Holocene Archaeological Sequence in Kharga

Within the Egyptian Western Desert, the Kharga Oasis was a particularly favourable and highly frequented area during the Holocene thanks to a permanent ground water supply. The high concentration and accessibility of archaeological sites here allows the cultural and economic changes to be documented at a local scale, when northeastern Africa was experiencing strong climatic variations and the transition to a food production economy. An expansive program led by the Institut français d’archéologie orientale (IFAO) which included systematic survey, sampling collections, tests and stratigraphic excavations has dramatically increased the amount of data available concerning the prehistory of the Kharga Oasis. Typo-technological analyses focusing on the lithic industries, and other aspects of material culture, plus a series of ¹⁴C dates have led to the definition of four main successive cultural phases: Kharga A, B, C and D. This paper describes this proposal of a new archaeological sequence for human occupation in the Kharga Oasis and discusses its integration in the wider frame of Egypt and the Eastern Sahara.     

甘肃肃北马鬃山径保尔草场玉矿遗址2016年发掘简报

径保尔草场玉矿遗址位于甘肃省酒泉市肃北县马鬃山镇公婆泉村。2016年4~7月,甘肃省文物考古研究所继续对遗址进行了发掘,清理石块堆积7处、灰坑20个、房址43座,出土有陶器、石器、铜器、玉料等遗物。遗址碳十四测年数据分布于公元前390~前60年,主要集中于公元前360~前150年。本次发掘为了解当时玉矿的开采情况提供了重要资料,对于开展遗址聚落分期并揭示各期聚落组成和形态演变具有重要意义。     

Radiocarbon Chronometry of Site QJ-280, Quebrada Jaguay,a Terminal Pleistocene to Early Holocene Fishing Site in Southern Peru

Excavations in 1970, 1996, and 1999 at Site QJ-280, Quebrada Jaguay, in southern Peru, yielded enough dateable terrestrial plant material to establish an extensive radiocarbon chronology for the site. QJ-280 is one of oldest well-dated fishing sites in the Americas: it was occupied from the terminal Pleistocene to the mid-Holocene (about 13,000–8,300 calibrated years BP) based on 42 terrestrial radiocarbon dates, encompassing the Jaguay and Machas Phases of the local archaeological sequence. In addition to the terrestrial dates, radiocarbon measurements on valves of two marine surf clam (Mesodesma donacium) individuals from a single, well-dated mid-Holocene Manos Phase archaeological context have provided insight into marine upwelling conditions during the occupation of Quebrada Jaguay. The marine reservoir age varied between 130 and 730 ¹⁴C years during the brief lives of the two clams (up to 5 years each), and varied by up to 530 ¹⁴C years within an individual valve, suggesting strong and variable deep marine upwelling; conditions broadly similar to those that exist in coastal Peru today. These rapid variations in marine radiocarbon age suggest that marine radiocarbon dates from environments with variable upwelling could be skewed by up to hundreds of years.     

Tempo and mode of formation of the Late Epigravettian necropolis of Arene Candide cave (Italy): direct radiocarbon evidence

Existing ¹⁴C dates of charcoal and bone samples from different layers of the Late Epigravettian sequence at Arene Candide (Liguria, Italy) place the formation of the deposit between 12,000 and 10,000 (uncal.) BP, but it is unclear how long this cave was used for funerary purposes. Clarifying this point has important archaeological and anthropological implications, given number and variety of inhumations. These include single and double burials of richly ornamented adults, adolescents and children and disarticulated accumulations of bones. Six new direct ¹⁴C AMS dates obtained from human skeletons place more precisely the necropolis at the Late Pleistocene-Early Holocene boundary, and appear distributed in two distinct groups that indicate two phases of funerary utilisation of the cave. Although separated by many centuries, the two phases of interment show recurring formal elements. Both groups include skeletons in anatomical connection exhibiting similar grave goods as well as chaotic accumulations of bones and, more importantly, the double burial of an adult with a child lying to its left. The reappearance of similar funerary patterns in the same site at two widely separated points in time suggests that the cave held a symbolic significance over several centuries. This, and the additional evidence of funerary use of the cave during the preceding Gravettian, points to the endurance of Upper Palaeolithic cultural traditions.     

A SPATIO‐TEMPORAL KERNEL METHOD FOR MAPPING CHANGES IN PREHISTORIC LAND‐USE PATTERNS

Archaeologists are accustomed to considering both the spatial distributions of sites and the temporal distributions of dates as means of analysing the dynamics of prehistoric societies. However, spatial and temporal approaches have thus far remained largely separate, rather than being combined within a single, unified framework. A formal methodology is outlined that combines univariate kernel density estimation based on radiocarbon dates with bivariate kernel density estimation based on spatial site coordinates; the approach allows archaeologists to arrive at reconstructed land‐use distributions through time that not only correct for the problematic issue of site contemporaneity, but also reflect the continuous nature of the archaeological record. The model is implemented using as a data set a series of sites from the Mesolithic of Atlantic Iberia; the results demonstrate that it is capable of providing key insights into changing patterns of land use that are not apparent from either the temporal or the spatial perspective alone.     

Bayesian radiocarbon models for the cultural transition during the Allerød in southern Scandinavia

During late Greenland Interstadial 1 (the Allerød chronozone), southern Scandinavia witnessed an abrupt cultural transition. This period marks the end of Late Magdalenian/Final Palaeolithic Federmessergruppen in the region, and the beginning of the Bromme culture. The latter is characterised by a restricted territorial range, loss of bow-arrow technology, and a general reduction in material culture complexity. Different hypotheses for the origin of the Bromme culture have been put forward, variously stressing local continuity or discontinuity. Different environmental and cultural factors have been suggested to force the observed changes, but crucially their precise timing remains elusive. Here, we review competing hypotheses for this cultural transition, and evaluate them using an audited regional database of the available ¹⁴C dates. We construct a series of Bayesian calibration models using the IntCal09 calibration curve to clarify timings of cultural continuity/discontinuity, probable duration of different techno-complexes, and relationships between environmental changes and material culture transitions. Our models suggest that the Bromme culture emerged late in the Allerød, and that the Laacher See-eruption most probably forced this cultural event horizon.     

“The Good,the Bad,and the Ugly”: evaluating the radiocarbon chronology of the middle and late Upper Paleolithic in the Enisei River valley,south-central Siberia

The ¹⁴C record for the Upper Paleolithic in Siberia has remained largely unevaluated and includes good, bad, and ugly dates. Too often researchers accept either all published dates or only those dates that tend to support proposed chronological hypotheses, regardless of sample quality and association. This article systematically evaluates all published ¹⁴C dates (including several newly obtained AMS dates) from middle and late Upper Paleolithic sites in the Enisei River valley of south-central Siberia to establish a reliable chronology for the region and address the tempo of modern human dispersals in Siberia during late Pleistocene times. The revised chronology indicates humans were present before and after the Last Glacial Maximum, but absent during this climatic event. Results also suggest that human population in the region may have increased during the Oldest Dryas.     

Temporal Patterns in Ceramic Production in the Berbati Valley,Greece

Abstract

This research explores temporal patterns in the procurement of raw materials for ceramic production, based mainly on material recovered in regional survey. The underlying premise is that potters in different cultural phases will preferentially exploit the same geological landscape for the most suitable raw materials, but different materials may be preferred depending upon the potter's technological traditions. A program of petrographic and chemical analyses was carried out on ceramics from the Berbati-Limnes Archaeological Survey, Argolid, Greece. Ceramic fabrics from several cultural phases were studied and compared with patterns of settlement within the valley. The results show that ceramics from regional surveys can be used to identify broad patterns of change in exploitation of the same landscape. In some cases these patterns correlate with changes in settlement and may indicate that different choices in raw material procurement mark the arrival of potters from outside the valley.     

Prehistoric hunters and gatherers of Brazil

Although carbon-14 dates prior to 13,000 B.P. have been obtained from several sites east and south of Amazonia, their reliability is uncertain. By about 11,000 B.P., however, two lithic traditions were widespread. The Uruguai tradition, characterized by bifacial stemmed projectile points, was associated with open vegetation in the south; the Itaparica tradition, emphasizing well-formed unifacial artifacts, had dispersed over the eastern tropical parklands. An enormous amount and variety of rock paintings and/or engravings are associated with the latter. Around 7000 B.P., two new traditions emerged to exploit new habitats. The Humaitá tradition, characterized by large bifacial tools and an absence of stone projectile points, expanded over the broad-leaved forests in the south, leaving the open landscapes dominated by the projectile point-using Umbu tradition. The sambaqui (shell midden) tradition, also emphasizing large bifaces, developed along rugged portions of the southern coast. By 4000 B.P., groups along the coast of Rio de Janeiro and Espírito Santo were using domesticated or semidomesticated plants, perhaps sweet manioc. Maize was being grown in Minas Gerais by about 3500 B.P. Carbon-14 dates from numerous sites indicate, however, that the hunter-gatherer way of life persisted in many places long after the advent of pottery-making horticulturalists. The existence of large temporal and spatial gaps even in regions with considerable investigation makes it difficult to reconstruct the process of evolution reflected in these archaeological complexes. Correlations between cultural traditions and environmental fluctuations indicate, however, that adaptation to changing conditions was a significant challenge faced by prehistoric Brazilian populations.     

A method for chronological apportioning of ceramic assemblages

Artifact assemblages from long-inhabited sites may include ceramic types and wares from multiple time periods, making temporal comparisons between sites difficult. This is especially problematic in macro-regional data sets compiled from multiple sources with varying degrees of chronological control. We present a method for chronological apportioning of ceramic assemblages that considers site occupation dates, ceramic production dates, and popularity distribution curves. The chronological apportioning can also be adjusted to take into account different population sizes during the site occupation span. Our method is illustrated with ceramic data from late prehispanic sites in the San Pedro Valley and Tonto Basin, Arizona, U.S.A., compiled as part of the Southwest Social Networks Project. The accuracy of the apportioning method is evaluated by comparing apportioned assemblages with those from nearby contemporaneous single component sites.     

New insights into the neolithisation process in southwest Europe according to spatial density analysis from calibrated radiocarbon dates

The agricultural way of life spreads throughout Europe via two main routes: the Danube corridor and the Mediterranean basin. Current archaeological literature describes the arrival to the Western Mediterranean as a rapid process which involves both demic and cultural models, and in this regard, the dispersal movement has been investigated using mathematical models, where the key factors are time and space. In this work, we have created a compilation of all available radiocarbon dates for the whole of Iberia, in order to draw a chronological series of maps to illustrate temporal and spatial patterns in the neolithisation process. The maps were prepared by calculating the calibrated 14C date probability density curves, as a proxy to show the spatial dynamics of the last hunter-gatherers and first farmers. Several scholars have pointed out problems linked with the variability of samples, such as the overrepresentation of some sites, the degree of regional research, the nature of the dated samples and above all the archaeological context, but we are confident that the selected dates, after applying some filters and statistical protocols, constitute a good way to approach settlement spatial patterns in Iberia at the time of the neolithisation process.     

Late Quaternary ostracods from Lake George,New South Wales

Fossil ostracods from the uppermost 3m of core LG4 from Lake George all have modern living representatives. This part of the core is thought to represent deposition during the last 60,000 years (see Singh et al., 1981b) and the lake hisotry is traced from a knowledge of the ostracod ecology.

The following distinct phases, and their respective timing, are postulated for Lake George (the timing of events should be considered with caution as few ¹⁴C dates are available): water fresh and lake full for the periods of 10,200 – 12,000 yBP and 19,100 – 20,700 yBP, water fresh, ephemeral at times, for the periods of 3,200–4,000 yBP, 7,000 yBP, 7,500 yBP, 8,500–10,200 yBP, 12,000–13,500 yBP, 20,700–23,500 yBP, 23,800–27,600 yBP and at some stage between 27,000 and 60,000 yBP; ephemeral saline water for a few short episodes between 3,200 and 4,000 yBP and for the periods of 15,600–17,400 yBP and 23,800–27,600 yBP; lake definitely dry between 17,400 and 19,100 yBP.

Data obtained from the ostracods correlate reasonably well with those of lake level fluctuations based on the study of ancient shorelines by Coventry (1976) and others based on facies analyses and the record of plant microfossils by Singh et al. (1981b).     

Comments on Graf, Journal of Archaeological Science 36, 2009 “ “The Good, the Bad, and the Ugly”: evaluating the radiocarbon chronology of the middle and late Upper Paleolithic in the Enisei River valley, south-central Siberia”

Here I present a critical evaluation of the analysis conducted by Graf [Graf, K.E., 2009. “The Good, the Bad, and the Ugly”: Evaluating the radiocarbon chronology of the middle and late Upper Paleolithic in the Enisei River valley, south-central Siberia. Journal of Archaeological Science 36, 694–707] of the Paleolithic radiocarbon (¹⁴C) dataset for the Upper Paleolithic sites in the Yenisei River basin of Central Siberia. Graf applied a rating system to the corpus of existing ¹⁴C data for the region, and announced some new ¹⁴C dates. The results obtained, however, are highly biased due to several factors, including prejudice concerning the higher accuracy of the AMS technique in ¹⁴C dating and that ¹⁴C dates from the same cultural component should overlap with plus–minus two sigmas; ambiguities with the subdivision of the Lateglacial period; artificially high sample selection criteria; incomplete factual material; and unjustifiable and misleading statements on the ¹⁴C dating of fossil bones and the issue of Last Glacial Maximum human presence in Siberia. As a result, the conclusions made by Graf [Graf, K.E., 2009. “The Good, the Bad, and the Ugly”: Evaluating the radiocarbon chronology of the middle and late Upper Paleolithic in the Enisei River valley, south-central Siberia. Journal of Archaeological Science 36, 694–707] are unconvincing. New analysis is necessary in order to improve the quality of treatment of the original data for the Upper Paleolithic ¹⁴C chronology in the Yenisei River basin.     

NEW CHRONOLOGICAL EVIDENCE FOR THE MIDDLE TO UPPER PALAEOLITHIC TRANSITION IN THE CZECH REPUBLIC AND SLOVAKIA: NEW OPTICALLY STIMULATED LUMINESCENCE DATING RESULTS

We report new optically stimulated luminescence (OSL) dates from the Central European sites of K?lna, Stránská skála, Bohunice, Vedrovice V, Vedrovice Ia, Moravský Krumlov IV and Dzeravá skala, which date to the Middle–Upper Palaeolithic transition period. There are important unresolved questions surrounding the timing of archaeological events during this crucial period in European prehistory. Archaeological layers from this time period are at the limits of the ¹⁴C method and most of these sites lack good chronology. The results of this dating project suggest that some parts of the current chronological framework may need to be revised. Although in many cases our OSL results are broadly consistent with previous dates obtained by ¹⁴C, in other cases they reveal unexpected surprises. One OSL result from K?lna opens up the possibility that Neanderthals may have survived in this part of Europe past the 30 ka bp mark as has been argued for several Neanderthal sites in southern Europe. The large Szeletian assemblage recovered from Vedrovice V may be significantly older than previously thought, which undermines the idea that the Szeletian culture is exclusively an Early Upper Palaeolithic industry. More dating research is needed to confirm the more controversial results of this research.