scholarly journals Chronostratigraphic Sequence of Santuario Della Madonna Cave (Calabria, Southern Italy): AMS Radiocarbon Data from a New Excavation Area

Radiocarbon ◽  
2010 ◽  
Vol 52 (2) ◽  
pp. 408-414 ◽  
Author(s):  
L Calcagnile ◽  
V Tinè ◽  
G Quarta ◽  
M D'Elia ◽  
G Fiorentino ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Bronze Age ◽  
Radiocarbon Dating ◽  
Southern Italy ◽  
Statistical Tools ◽  
Ams Radiocarbon Dating ◽  
Cultural Aspects ◽  
Radiocarbon Data ◽  
Middle Bronze Age ◽  
Excavation Area

The Santuario della Madonna Cave, located near Praia a Mare (Cosenza), along the northwestern coast of Calabria (southern Italy), has an impressive stratigraphy, with occupation phases spanning from the late Paleolithic to the advanced phases of the Middle Bronze Age. Recently, a new excavation area has been opened in the cave from which shortlived vegetal remains were sampled and submitted for accelerator mass spectrometry (AMS) radiocarbon dating. The aim of this study was to define an accurate chronology of the different cultural aspects and to explore the potentialities resulting from application of advanced statistical tools for 14C data analysis in such a context.

scholarly journals The Neolithic Site of Serra Cicora: Results of the AMS Radiocarbon Dating

Radiocarbon ◽  
2005 ◽  
Vol 47 (2) ◽  
pp. 207-210 ◽  
Author(s):  
G Quarta ◽  
M D'Elia ◽  
E Ingravallo ◽  
I Tiberi ◽  
L Calcagnile
Keyword(s):  
Mass Spectrometry ◽  
Radiocarbon Dating ◽  
Southern Italy ◽  
Early Neolithic ◽  
Human Occupation ◽  
Late Neolithic ◽  
Ams Radiocarbon Dating ◽  
Neolithic Site ◽  
New Information ◽  
Definition Of

Bone and charcoal samples from the Neolithic site of Serra Cicora in the Salento Peninsula (southern Italy) have been dated by accelerator mass spectrometry (AMS). Measurements appear to support other archaeological evidence and have shown that 2 distinct phases of human occupation of the site can be identified: the first occupation in the Early Neolithic and a second occupation in the Middle-Late Neolithic. The results provide new information and are a fundamental contribution to the definition of the absolute chronology of the Middle-Late Neolithic in this part of Europe.

The Copper Age Mound Necropolis in Salve, Lecce, Italy: Radiocarbon Dating Results on Charcoals, Bones, Cremated Bones, and Pottery

Radiocarbon ◽  
2014 ◽  
Vol 56 (3) ◽  
pp. 949-957 ◽  
Author(s):  
Gianluca Quarta ◽  
Ida Tiberi ◽  
Marco Rossi ◽  
Giorgia Aprile ◽  
Eugenia Braione ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Accelerator Mass Spectrometry ◽  
Radiocarbon Dating ◽  
Southern Italy ◽  
Copper Age ◽  
Organic Residues ◽  
Ams Radiocarbon Dating ◽  
Funeral Practices ◽  
Pottery Sherds

Archaeological surface surveys carried out near Salve in southern Italy led to the identification of about 90 stone mounds spread over an area of about 100 ha. Systematic archaeological investigations allowed to identify the mounds as funeral structures with some having megalithic features. In the necropolis, both the inhumation and cremation rituals are evident, in some cases within the same mound. This article presents the results of an accelerator mass spectrometry (AMS) radiocarbon dating campaign carried out on different kinds of samples recovered from several structures: unburned and cremated bones, charcoals, and organic residues extracted from pottery sherds. The results allowed to assess the chronology of the site and to shed new light on the different funeral practices in Copper Age southern Italy.

scholarly journals 14C Wiggle-Matching of the B-Tm Tephra, Baitoushan Volcano, China/North Korea

Radiocarbon ◽  
2010 ◽  
Vol 52 (3) ◽  
pp. 933-940 ◽  
Author(s):  
Shinya Yatsuzuka ◽  
Mitsuru Okuno ◽  
Toshio Nakamura ◽  
Katsuhiko Kimura ◽  
Yohei Setoma ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Accelerator Mass Spectrometry ◽  
North Korea ◽  
Radiocarbon Dating ◽  
Gas Emission ◽  
Volcanic Gas ◽  
Ams Radiocarbon Dating ◽  
Eruption Age ◽  
The Difference ◽  
Volcanic Gas Emission

We performed accelerator mass spectrometry (AMS) radiocarbon dating and wiggle-matching of 2 wood samples from charred trunks of trees (samples A and B) collected from an ignimbrite deposit on the northeastern slope of the Baitoushan Volcano on the border of China and North Korea. The obtained calendar years for the eruption are cal AD 945–960 for sample A and cal AD 859–884 and cal AD 935–963 for sample B in the 2-σ range. These results are unable to determine the precise eruption age. The reason for the difference in reported ages may be due to volcanic gas emission prior to the huge eruption.

scholarly journals Radiocarbon Dating in Late-Roman and Medieval Contexts: An Archaeological Excavation in the Center of Florence, Italy

Radiocarbon ◽  
2007 ◽  
Vol 49 (2) ◽  
pp. 611-616 ◽  
Author(s):  
M E Fedi ◽  
A Arnoldus-Huyzendveld ◽  
A Cartocci ◽  
M Manetti ◽  
F Taccetti
Keyword(s):  
Mass Spectrometry ◽  
Urban Development ◽  
Radiocarbon Dating ◽  
Beam Line ◽  
Archaeological Excavation ◽  
Urban Context ◽  
12Th Century ◽  
Archaeological Areas ◽  
The University ◽  
Excavation Area

A series of samples for radiocarbon dating were collected in 2005 from the Biblioteca Magliabechiana archaeological excavation area in the center of Florence, Italy, in a project directed by the Dipartimento di Archeologia e Storia delle Arti of the University of Siena, in cooperation with the Soprintendenza per i Beni Architettonici e per il Paesaggio per le province di Firenze e Prato. This area is located near the Uffizi Galleries, close to the Roman town, the Arno River and one of its former tributaries. The area is peculiar for the Florentine urban context because it was free from urban development until the 12th century AD. The exposed stratigraphy showed the presence of several layers composed of natural sediments, partly the result of historical floods. Here, we report a series of 14C measurements on charcoal and seed samples collected on this excavation. 14C dating has been performed in the LABEC laboratory in Florence, on the accelerator mass spectrometry (AMS) beam line of the AMS-IBA 3MV Tandetron accelerator. We also had the opportunity to compare the 14C dates obtained with several series of samples previously collected in nearby archaeological areas. Results were consistent with the data obtained previously and, moreover, offer interesting new aspects to the interpretation of the archaeological findings.

scholarly journals AMS Radiocarbon Dating of Tianma-Qucun Site in Shanxi, China

Radiocarbon ◽  
2001 ◽  
Vol 43 (2B) ◽  
pp. 1109-1114 ◽  
Author(s):  
Zhiyu Guo ◽  
Kexin Liu ◽  
Xiangyang Lu ◽  
Hongji Ma ◽  
Kun Li ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Bayesian Analysis ◽  
Accelerator Mass Spectrometry ◽  
Radiocarbon Dating ◽  
Lower Boundary ◽  
Historical Record ◽  
Shanxi Province ◽  
Ams Radiocarbon Dating ◽  
Western Zhou ◽  
Calibration Program

Tianma-Qucun is the biggest site of Western Zhou Dynasty discovered in Shanxi Province, China. It has been recognized as the early capital of Jin, a vassal state of Western Zhou. The territories were granted to the first Marquis of Jin with the title in the early days of Western Zhou. Bone sample series from the site were radiocarbon-dated by accelerator mass spectrometry (AMS) and calibrated with the Oxford calibration program OxCal 3.5. Bayesian analysis of the calibrated ages shows that the earliest residents of the Western Zhou came to Tianma-Qucun area in 1020–940 BC and the lower boundary of the Western Zhou is 796–754 BC, which corresponds well to the historical record 770 BC.

scholarly journals A Simple Method to Separate Pollen for AMS Radiocarbon Dating and its Application to Lacustrine and Marine Sediments

Radiocarbon ◽  
1999 ◽  
Vol 41 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Scott A Mensing ◽  
John R Southon
Keyword(s):  
Mass Spectrometry ◽  
Lake Sediments ◽  
Marine Sediments ◽  
Radiocarbon Dating ◽  
Minimal Cost ◽  
Simple Method ◽  
Ams Radiocarbon Dating ◽  
Sediment Reworking ◽  
Scientific Equipment ◽  
Ams Dating

We present a simple method for manually separating pollen concentrates for radiocarbon accelerator mass spectrometry (AMS) dating using a mouth pipetting system. The required equipment is readily available from scientific equipment supply houses at minimal cost. Pollen samples from lake sediments required about 4 h of hand picking, whereas samples from marine sediments required about 8 h labor. Pollen dates from marine sediments were much older than expected. We are attempting to resolve whether this is due to contamination of the pollen or the presence of significant quantities of old reworked pollen. Pollen dates from lake sediments associated with Mazama Ash were consistent with other published ages; however, replicate dates on pollen samples from above the ash were consistently older than the surrounding sediment. Our results suggest that caution must be used when interpreting pollen dates if the potential for sediment reworking is present.

scholarly journals AMS Radiocarbon Dating of Wood Samples from the Angkor Monuments, Cambodia

Radiocarbon ◽  
2008 ◽  
Vol 50 (3) ◽  
pp. 437-445 ◽  
Author(s):  
E Uchida ◽  
O Cunin ◽  
I Shimoda ◽  
Y Takubo ◽  
T Nakagawa
Keyword(s):  
Mass Spectrometry ◽  
Accelerator Mass Spectrometry ◽  
Radiocarbon Dating ◽  
Ams Radiocarbon Dating

In the Angkor monuments of Cambodia, pieces of wood remain (as head frames of doorways, crossbeams, ceiling boards, etc.) in the following 8 monuments: Bakong, Lolei, Baksei Chamkrong, North Khleang, Angkor Wat, Banteay Kdei, Bayon, and Gates of Angkor Thorn. Accelerator mass spectrometry (AMS) radiocarbon dating carried out on 15 wood samples collected from the above 8 monuments revealed that most of the wood samples are original, except for the head frame of a doorway in Baksei Chamkrong, the ceiling boards in the northwest tower, and a crossbeam with pivot hole in the southwest tower of the Inner Gallery of Angkor Wat. The 14C age for the head frame of a doorway in the inner wall under the central tower of North Khleang supports the hypothesis that the inner walls are additions from a later period.

scholarly journals Performance Test of a New Graphite Target Production Facility in ATOMKI

Radiocarbon ◽  
2007 ◽  
Vol 49 (2) ◽  
pp. 217-224 ◽  
Author(s):  
L Rinyu ◽  
I Futó ◽  
Á Z Kiss ◽  
M Molnár ◽  
É Svingor ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Production System ◽  
Radiocarbon Dating ◽  
Performance Test ◽  
Nuclear Research ◽  
Hungarian Academy ◽  
Graphite Target ◽  
Ams Radiocarbon Dating ◽  
Target Production ◽  
Academy Of Sciences

We present our new graphite target production system, developed in the Institute of Nuclear Research of the Hungarian Academy of Sciences (ATOMKI), for accelerator mass spectrometry (AMS) radiocarbon dating measurements. The system consists of a gas handling line and a graphite target production system. Results of AMS measurements, stable isotope mass spectrometry measurements, and gravimetric/pressure yield determinations have been used to find the proper conditions for the graphitization process. We have also investigated the 14C contamination and the memory effect of the system during the graphitization processes. This paper covers the details of these experiments and a discussion of the results.

An Archaeological Investigation of Early Mineworkings on Copa Hill, Cwmystwyth: New Evidence for Prehistoric Mining

1988 ◽  
Vol 54 ◽  
pp. 329-333 ◽  
Author(s):  
Simon Timberlake ◽  
Roy Switsur
Keyword(s):  
Twentieth Century ◽  
Bronze Age ◽  
Radiocarbon Dating ◽  
Archaeological Investigation ◽  
Middle Bronze Age ◽  
Mine Workings ◽  
Prehistoric Mining ◽  
The Hill ◽  
New Evidence

In September 1986 a small excavation was done by S. T. to investigate an area of primitive-style mine-workings on Copa Hill, Cwmystwyth, Dyfed (SN816756). A small opencast and several overgrown tips associated with pebble hammers occur where the copper-rich Comet Lode outcrops on the brow of the hill. Copa Hill is within an area of seventeenth–twentieth-century lead-mine workings which extend for 1.2 km along the N side of the Ystwyth Valley (fig. 1). Radiocarbon dating of charcoal from within one of the tips suggests that mining commenced in the middle Bronze Age.

scholarly journals 14C/12C Variations of Samples Exposed in Air According to Carbon Structure and Air Temperature

Radiocarbon ◽  
2013 ◽  
Vol 55 (2) ◽  
pp. 593-598
Author(s):  
J H Park ◽  
W Hong ◽  
G Park ◽  
K S Sung
Keyword(s):  
Mass Spectrometry ◽  
Carbon Nanotube ◽  
Air Temperature ◽  
Accelerator Mass Spectrometry ◽  
Radiocarbon Dating ◽  
Pyrolytic Graphite ◽  
Carbon Structure ◽  
Graphite Sheet ◽  
Ams Radiocarbon Dating ◽  
Carbon Structures

Various carbon structures, including carbon nanofilament (CNF), single-wall carbon nanotube (SWCNT), multi-wall carbon nanotube (MWCNT), and pyrolytic graphite sheet (PGS), were exposed in air to determine how they vary according to carbon structure and air temperature. CNF is the carbon structure used in accelerator mass spectrometry (AMS) radiocarbon dating (Santos et al. 2007). When CNF and MWCNT were exposed in cold air (3 or −18 °C) for longer than 6 hr, their 14C/12C ratio increased (>5 × 10–14). When heated in an oven (200 or 250 °C) for longer than 12 hr, their 14C/12C ratio decreased. However, when SWCNT and PGS were exposed in air cooled to 3 °C for 12 hr, their 14C/12C ratio did not increase. This phenomenon is very curious, and is useful for the development of a storage method for carbon samples made by reduction reactions of CO2.

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