scholarly journals Tempo of a Mega-henge: A New Chronology for Mount Pleasant, Dorchester, Dorset

2020 ◽  
Vol 86 ◽  
pp. 199-236
Author(s):  
Susan Greaney ◽  
Zoë Hazell ◽  
Alistair Barclay ◽  
Christopher Bronk Ramsey ◽  
Elaine Dunbar ◽  
...  

Radiocarbon dating and Bayesian chronological modelling have provided precise new dating for the henge monument of Mount Pleasant in Dorset, excavated in 1970–1. A total of 59 radiocarbon dates are now available for the site and modelling of these has provided a revised sequence for the henge enclosure and its various constituent parts: the timber palisaded enclosure, the Conquer Barrow, and the ditch surrounding Site IV, a concentric timber and stone monument. This suggests that the henge was probably built in the 26th century cal bc, shortly followed by the timber palisade and Site IV ditch. These major construction events took place in the late Neolithic over a relatively short timespan, probably lasting 35–125 years. The principal results are discussed for each element of the site, including comparison with similar monument types elsewhere in Britain and Ireland, and wider implications for late Neolithic connections and later activity at the site associated with Beaker pottery are explored.

2019 ◽  
Vol 8 (2) ◽  
pp. 229-239
Author(s):  
Anatoly Vladimirovich Somov ◽  
Anton Aleksandrovich Shalapinin

The following paper provides a database of radiocarbon dating, which was obtained from the Srednevolzhskaya archaeological culture of the developed and late Neolithic, as well as on the Eneolithic materials of the forest-steppe Volga region. The key issue is the chronological ratio of the melon complexes, which is considered through the construction of graphs of the sums of calibrated radiocarbon dates. Verification of previously obtained definitions was carried out with the ratio of the absolute chronology of adjacent regions. As a result of definitions study for C14, the range of the Srednevolzhskaya Neolithic culture and the Eneolithic complexes coexistence was revealed, which begins with 5050 BC with a probability of 68,2% or 5250 BC with a probability of 95,4% and ends with 3900 BC (68,2%) or 4000 BC (95,4%). The results of radiocarbon dating confirm the genetic continuity between the Neolithic and Eneolithic complexes of the forest-steppe Volga region. In the light of data on the absolute chronology, the assumption of continuity between the Neolithic and Eneolithic can be extended to the basin of the Sok River, where there is a closure of a chronological range of comb Neolithic complexes and aneolithic materials of the Chekalinskiy type. The chronological interval of the late Neolithic ceramics partially coincides with the time of the existence of Tokskiy materials, as well as with the Gundorovskiy type and with an internal edge ceramics.


1992 ◽  
Vol 58 (1) ◽  
pp. 203-212 ◽  
Author(s):  
M. Pitts ◽  
A. Whittle

Radiocarbon dates on samples excavated earlier this century by Gray and Keiller and one more recently by Pitts, confirm that the henge at Avebury is in the same general Late Neolithic horizon as the other great Wessex enclosures of Durrington Walls, Marden and Mount Pleasant. They leave open to interpretation the details of Avebury's sequence. The monument may have been constructed in a series of stages, but further investigation is badly needed.


2003 ◽  
Vol 68 (4) ◽  
pp. 719-735 ◽  
Author(s):  
William C. Prentiss ◽  
Michael Lenert ◽  
Thomas A. Foor ◽  
Nathan B. Goodale ◽  
Trinity Schlegel

This paper provides an analysis of radiocarbon dates acquired during earlier and recent field seasons at the Keatley Creek site, southern British Columbia. Results indicate that early occupations predating 1900 cal. B.P. occurred, but were not likely associated with population aggregation and large housepits. The aggregated village appears to have emerged by approximately 1700 cal. B.P. and was abandoned at approximately 800 cal. B.P. A break in the occupational sequence is recognized at 1450-1350 cal. B.P. and one other short break may have occurred shortly after 1250 cal. B.P. Peak socioeconomic complexity appears to have been achieved between 1350 and 800 cal B.P. Climatic warming may have provided a selective environment favoring population aggregation and intensification during this time. The final abandonment of the Keatley Creek village appears to have been part of a regional phenomenon suggesting the possibility that climatic factors were important in this case as well.


Radiocarbon ◽  
1995 ◽  
Vol 37 (2) ◽  
pp. 103-110 ◽  
Author(s):  
Anna Pazdur ◽  
Mieczysław F. Pazdur ◽  
Jacek Pawlyta ◽  
Andrzej Górny ◽  
Michał Olszewski

We report preliminary results of a long-term systematic study intended to gather paleoclimatic records from precisely dated speleothems. The research project is limited to speleothems deposited in caves of the Cracow-Wieluń Upland, the largest and best-explored karst region in Poland, covering ca. 2900 km2 with >1000 caves. Speleothem samples were selected from collections of the Geological Museum of the Academy of Mining and Metallurgy in Cracow. Radiocarbon dates of these samples from ca. 45–20 ka bp almost exactly coincide with age range of the Interplenivistulian. A break in speleothem formation between ca. 20 and 10 ka bp may be interpreted as a result of serious climatic deterioration associated with the maximum extent of the last glaciation. We observed differences among 14C, U/Th and AAR dating results. Changes of δ13C and δ18O in speleothems that grew between ca. 30 and 20 ka bp may be interpreted as changes of paleoclimatic conditions.


Radiocarbon ◽  
1992 ◽  
Vol 34 (3) ◽  
pp. 859-866 ◽  
Author(s):  
Ede Hertelendi ◽  
Ferenc Horváth

We investigated chronological questions of five Late Neolithic settlements in the Hungarian Tisza-Maros region. Fifty new radiocarbon dates provide an internal chronology for the developmental phases of the tell settlements, and place them into the wider framework of the southeastern European Neolithic. An example is presented of how a unique type of stratigraphic excavation helps the interpretation of radiocarbon data, which are in contradiction with the stratigraphic position of the samples.


2002 ◽  
Vol 33 ◽  
pp. 9-19 ◽  
Author(s):  
David Mattingly ◽  
David Edwards ◽  
John Dore

AbstractThis short paper presents a full list of the currently available radiocarbon dates from the work of Charles Daniels in the 1960s-1970s and the Fazzan Project (1997-2001). The dates can be grouped into several categories, by site or area, and demonstrate the potential of radiocarbon dating being applied to historic-period archaeology in the Sahara. This complements earlier Italian work on later prehistory. One of the most important conclusions to emerge is that the construction of castle-like buildings in Fazzan began within the Garamantian period and that some of the numerous well-preserved mudbrick fortified sites are thus rather earlier than has previously been envisaged. A second important conclusion is that the use of AMS dating can help to identify and confirm activity of the post-Garamantian and early Islamic phases, which has hitherto been elusive.


Radiocarbon ◽  
1983 ◽  
Vol 25 (2) ◽  
pp. 639-644 ◽  
Author(s):  
H T Waterbolk

In the past 30 years many hundreds of archaeologic samples have been dated by radiocarbon laboratories. Yet, one cannot say that 14C dating is fully integrated into archaeology. For many archaeologists, a 14C date is an outside expertise, for which they are grateful, when it provides the answer to an otherwise insoluble chronologic problem and when it falls within the expected time range. But if a 14C date contradicts other chronologic evidence, they often find the ‘solution’ inexplicable. Some archaeologists are so impressed by the new method, that they neglect the other evidence; others simply reject problematic 14C dates as archaeologically unacceptable. Frequently, excavation reports are provided with an appendix listing the relevant 14C dates with little or no discussion of their implication. It is rare, indeed, to see in archaeologic reports a careful weighing of the various types of chronologic evidence. Yet, this is precisely what the archaeologist is accustomed to do with the evidence from his traditional methods for building up a chronology: typology and stratigraphy. Why should he not be able to include radiocarbon dates in the same way in his considerations?


PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7174
Author(s):  
John P. Hart ◽  
Robert S. Feranec ◽  
Timothy J. Abel ◽  
Jessica L. Vavrasek

Isotopic analysis of dog (Canis lupus familiaris) bone recovered from archaeological sites as proxies for human bone is becoming common in North America. Chronological placement of the dogs is often determined through radiocarbon dating of dog bone. The Great Lakes, their tributaries, and nearby lakes and streams were important fisheries for Native Americans prior to and after sustained European presence in the region. Carbon entering the food web in freshwater systems is often not in full isotopic equilibrium with the atmosphere, giving rise to spuriously old radiocarbon ages in fish, other aquatic organisms, and their consumers. These freshwater reservoir offsets (FROs) have been noted on human and dog bone in several areas of the world. Here we report the results of multi-tracer Bayesian dietary modeling using δ15N and δ13C values on dog bone collagen from mid-fifteenth to mid-sixteenth-century Iroquoian village sites at the headwaters of the St. Lawrence River, New York, USA. Results indicate that fish was an important component of dog diets. A comparison of radiocarbon dates on dog bone with dates on deer bone or maize from the same sites indicate FROs ranging from 97 ± 24 to 220 ± 39 14Cyr with a weighted mean of 132 ± 8 14Cyr. These results suggest that dog bone should not be used for radiocarbon dating in the absence of modeling to determine fish consumption and that previously reported radiocarbon dates on human bone from the larger region are likely to have FROs given the known importance of fish in regional human diets.


1975 ◽  
Vol 41 ◽  
pp. 179-182 ◽  
Author(s):  
Andrew B. Smith

In 1940 Professor Thurstan Shaw excavated a trench in the cave known as Bosumpra at Abetifi (6° 41′N:0° 44′W) on the borderline between the moist forest and the northern marginal forest (fig. 1). Bosumpra is one of the four main ‘abosom’ (lesser) gods of the Guan pantheon (Brokenshaw 1966, 156). The report (Shaw, 1944) showed that the cave was formerly inhabited by a people with a pottery-using microlithic culture and provided the first analytical description of the microlithic industries from the forest regions of West Africa. As the site was the first of its kind to be excavated, and the excavation was carried out before the advent of radiocarbon dating, there was no way of knowing what age this industry was, or how long the cave had been occupied, beyond placing it within the rubric of the so-called “Guinea Neolithic”.To attempt to clarify this problem a group of students from the Department of Archaeology at the University of Ghana and myself conducted the excavation of a small witness section (fig. 2) in the cave over New Year 1973/74 with the specific aim of collecting organic material for dating. We were fortunate in finding adequate amounts of charcoal at all levels. Two of these samples were submitted to Rikagaku Kenkyusho, Japan, for dating.


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