|
ADIAS Radiocarbon Archive
[ Calibration
method - Radiocarbon
laboratories - Information
on radiocarbon dating
- Online databases of radiocarbon
dates ]
Please select
one of the following locations:
Abu
Al-Abyadh -
Balghelam - Dalma
- Jebel
Dhanna - Marawah
- Marawah
MR1 radiocarbon dates - Ras
Ghumays - Rufayq
- Sir
Bani Yas
CALIBRATION METHOD
All radiocarbon samples listed
here are taken on charcoal or ash and are conventional radiocarbon dates,
unless otherwise stated. The dates quoted are uncalibrated radiocarbon
years BP. Calibrated radiocarbon dates are presented using the 2-sigma
values which account for 95.4% of the probability of the date falling
within that particular range. All samples are calibrated using CALIB4.4
- the atmospheric terrestrial
calibration curve of Stuiver et al. (1998a,b), except where otherwise
stated, e.g. for the MR1 samples, both the atmospheric and marine calibration
results are presented. Calibrated age ranges are from the probability
distribution using Method B.
Various software for
calibrating radiocarbon dates is available via the internet including:
BCal - an on-line Bayesian
radiocarbon calibration tool - from Dr. Caitlin Buck, Department of Probability
and Statistics, University of Sheffield, U.K.
CALIB4.4
- you can download
the program or calibrate
dates online.
CalPal Online - the Cologne Radiocarbon Calibration & Palaeoclimate
Research Package.
OxCal
calibration software - the latest version is 3.9.
RADIOCARBON LABORATORIES
The ADIAS radiocarbon dates come
from a number of different laboratories. Their respective laboratory codes
are listed in brackets after each entry.
Heidelberg
(Hd), Institute of Environmental
Physics, University of Heidelberg, Germany.
Oxford
Radiocarbon Accelerator Unit (OxA), within the Research Laboratory
for Archaeology and the History of Art, University of Oxford.
ANSTO(OZE),
the Australian Nuclear Science and Technology Organisation, near Sydney
in New South Wales.
Rafter
Radiocarbon Laboratory (NZA), Institute of Geological and Nuclear
Sciences, Ltd., Lower Hutt, New Zealand.
The majority of our
dates, however, have been undertaken by the:
Scottish
Universities Environmental Research Centre - SUERC (GU), based
in East Kilbride, Scotland, in
conjunction with the NSF-Arizona
Accelerator Mass Spectrometry Laboratory (AA), National Science
Foundation and the University of Arizona, Tucson.
Special thanks go
to Dr.
Gordon Cook of SUERC for his assistance and cooperation with our radiocarbon
dating programme.
INFORMATION ON
RADIOCARBON DATING
Background
Guide to Radiocarbon (produced by the Oxford Radiocarbon Accelerator
Unit)
radiocarbon
WEB info (produced by the Waikato Radiocarbon Dating Laboratory)
ONLINE DATABASES
OF RADIOCARBON DATES
Archaeological
Site Index to Radiocarbon Dates from Great Britain and Ireland
BANADORA
- BAnque NAtionale de DOnnées RAdiocarbone pour l'EUROPE et
le PROCHE ORIENT * NEW *-
California
Radiocarbon Database
Canadian Archaeological Radiocarbon Database
Carbon
Dating Search - Historic Scotland
Irish
Radiocarbon Database
Marine
Reservoir Correction Database - part of the Queens University Belfast
CALIB website.
Near
Eastern Radiocarbon Context Database * NEW
*- excellent website maintained by Utz Böhner, Daniel
Schyle and Steffen Steiner in Germany. This database contains C14-data
from Epipalaeolithic, Pre-Pottery Neolithic, Pottery Neolithic and Chalcolithic
sites in the Near East and adjacent regions.
ORAU
Datelist Index (1975-2000). See also the ORAU
Datelist Site Index or the ORAU
Datelist OxA Index - Oxford
Stage 3
Databases - archaeological and faunal databases with radiocarbon dates
for Palaeolithic Europe.
University
of Washington Quaternary Isotope Laboratory Data Sets
Welcome to the ... Abu Dhabi Islands Archaeological Survey (ADIAS) Radiocarbon
archive
ABU AL-ABYADH [ for more information click
here ]
SITE
CODE |
SAMPLE REFERENCE |
TYPE OF SAMPLE |
RADIOCARBON
AGE BP |
LAB CODE |
CALIBRATED
RADIOCARBON DATE AD (2 sigma) |
CALIBRATION
METHOD |
DELTA 13C
REL. PDB |
SAMPLE TAKEN
BY |
ABY1-7 |
Sample
3 |
Sand/Charcoal |
1630
+/- 40 BP |
AA-48043
(GU-9771) |
264
- 272 AD (0.013)
339 - 537 AD (0.987) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 13.3 o/oo |
Daniel
Hull |
ABY33.11 |
Sample
5 |
Sand/Charcoal |
1215
+/- 40 BP |
AA-48044
(GU-9772) |
690
- 754 AD (0.184)
757 - 895 AD (0.795)
924 - 938 AD (0.020) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 11.2 o/oo |
Daniel
Hull |
ABY46.1 |
Sample
11 |
Sand/Charcoal |
180
+/- 40 BP |
AA-48045
(GU-9773) |
1650
- 1705 AD (0.209)
1720 - 1819 AD (0.519)
1828 - 1883 AD (0.106)
1913 - 1950 AD (0.165) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 16.0 o/oo |
Daniel
Hull |
ABY46.2 |
Sample 12 |
Sand/Charcoal |
270 +/- 40 BP |
AA-48046 (GU-9774) |
1489 - 1603 AD
(0.502)
1608 - 1673 AD (0.420)
1777 - 1800 AD (0.073)
1942 - 1946 AD (0.005) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 25.8 o/oo |
Daniel Hull |
BALGHELAM
[ for more information click
here ]
SITE
CODE |
SAMPLE REFERENCE |
TYPE OF SAMPLE |
RADIOCARBON
AGE BP |
LAB CODE |
CALIBRATED
RADIOCARBON DATE BC (2 sigma) |
CALIBRATION
METHOD |
DELTA 13C REL.
PDB |
SAMPLE TAKEN
BY |
BG3 |
Hearth 8 |
ash |
2460 +/- 45 BP |
AA-35538 (GU-8459) |
762 - 678 BC
(0.270)
671 - 409 BC (0.730) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 21.6 o/oo |
Salvatore Garfi |
BG5/6 |
Hearth 5 (A) |
ash |
2420 +/- 50 BP |
AA-35537 (GU-8460) |
761 - 679 BC
(0.245)
669 - 612 BC (0.104)
594 - 398 BC (0.651) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 21.6 o/oo |
Salvatore Garfi |
BG5/6 |
Hearth
19 (A2) |
ash |
3695
+/- 50 BP |
AA-35536
(GU-8461) |
2271
- 2258 BC (0.010)
2225 - 2225 BC (0.001)
2203 - 1939 BC (0.987)
1927 - 1924 BC (0.002) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 12.6 o/oo |
Salvatore
Garfi |
BG5/6 |
Hearth 49 (C) |
ash |
3415 +/- 50 BP |
AA-35535 (GU-8462) |
1879 - 1839 BC
(0.107)
1829 - 1603 BC (0.864)
1561 - 1534 BC (0.028) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 20.7 o/oo |
Salvatore Garfi |
DALMA
[ for more information click
here ]
All the Dalma samples were dated using the AMS method.
SITE
CODE |
SAMPLE REFERENCE |
TYPE OF SAMPLE |
RADIOCARBON
AGE BP |
LAB CODE |
CALIBRATED
RADIOCARBON DATE BC (2 sigma) |
CALIBRATION
METHOD |
DELTA 13C REL.
PDB |
SAMPLE TAKEN
BY |
DA11 |
DA11/94/4/RC1
context 4 |
carbonised datestone
(Phoenix dactylifera) |
5830 +/- 55 |
AA-32031 |
4828 - 4824 BC
(0.003)
4804 - 4545 BC (0.997) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 16.1 o/oo |
Emily Glover |
DA11 |
DA11/98/15/RC2
context 15 |
carbonised
datestone (Phoenix dactylifera) |
6165
+/- 55 |
AA-32032 |
5281
- 5271 BC (0.012)
5262 - 4945 BC (0.987)
4865 - 4865 BC (0.001) |
CALIB4.4
- Stuiver et al. 1998a,b |
-
15.9 o/oo |
Dr.
Mark Beech |
DA11 |
ADIAS-2001-DA11-1053-S2 |
charcoal fragments:
humified organic remains |
6220 +/- 45 |
AA-52543 (GU-10608) |
5299 - 5056
BC (1.000) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 14.1 o/oo |
Dr. Mark Beech |
DA11 |
ADIAS-2001-DA11-1043-S3 |
ashy sand/charcoal |
6395 +/- 60 |
AA-52544 (GU-10609) |
5478 - 5288
BC (0.993)
5269 - 5263 BC (0.007) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 14.3 o/oo |
Dr. Mark Beech |
DA11 |
ADIAS-2001-DA11-1027-S4 |
ashy sand, small
bits of charcoal |
6230 +/- 45 |
AA-52545 (GU-10610) |
5301 - 5189
BC (0.480)
5183 - 5059 BC (0.520) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 22.8 o/oo |
Dr. Mark Beech |
DA11 |
ADIAS-2001-DA11-1014-S7 |
charcoal fragments:
humified organic remains |
5830 +/- 45 |
AA-52546 (GU-10611) |
4785 - 4577
BC (0.957)
4572 - 4551 BC (0.043) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 18.2 o/oo |
Dr. Mark Beech |
JEBEL DHANNA [
for more information click
here ]
All three samples
were dated using the AMS method. Figures in brackets after the calibrated
radiocarbon date indicate the relative area under the probability distribution.
SITE
CODE |
SAMPLE REFERENCE |
TYPE OF SAMPLE |
RADIOCARBON
AGE BP |
LAB CODE |
CALIBRATED
RADIOCARBON DATE AD (2 sigma) |
CALIBRATION
METHOD |
DELTA 13C REL.
PDB |
SAMPLE TAKEN
BY |
DH1.1 |
sample 66 |
charcoal |
170 +/- 40 |
AA-48047 (GU-9775) |
1656 - 1709 AD
(0.191)
1718 - 1823 AD (0.497)
1826 - 1885 AD (0.143)
1912 - 1950 AD (0.169) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 22.4 o/oo |
Dan Hull/
Stephen Rowland |
DH22.2 |
sample
71a |
charcoal |
190
+/- 50 |
AA-48048
(GU-9776) |
1642
- 1712 AD (0.242)
1716 - 1887 AD (0.605)
1911 - 1950 AD (0.153) |
CALIB4.4
- Stuiver et al. 1998a,b |
-
16.1 o/oo |
Dan
Hull/
Stephen Rowland |
DH22.2 |
sample 71b |
charcoal |
205 +/- 40 |
AA-48049 (GU-9777) |
1638 - 1697 AD
(0.290)
1724 - 1814 AD (0.532)
1833 - 1878 AD (0.040)
1916 - 1949 AD (0.138) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 21.5 o/oo |
Dan Hull/
Stephen Rowland |
MARAWAH [
for more information click
here ]
MARAWAH MR1 RADIOCARBON DATES
As you can see in the table below
for the MR1 samples (Hd-20755, Hd-20756 and Hd-20758), utilising the marine
calibration curve makes all the dates between c. 400-800 years younger,
than if you use the atmospheric terrestrial calibration curve. Even using
the marine curve this still makes all the samples quite old, hearths A
and C would fall at the upper end of our Dalma date range.
In the case of the MR1 radiocarbon
dates .... "The dates were measured at the Heidelberg Radiocarbon Lab
by Dr Bernd Kromer. Their calibration is slightly problematic, because
the d13C-values are in the range of marine samples. If that were the case
they would have to be calibrated against the marine calibration curve,
which would decrease the age by at least 400 and at most 800 years. In
any case they remain some of the earliest dates
measured up to now for sites in the Emirates - as far as I know."
Source: Prof. Hans-Peter Uerpmann, pers.comm.
N.B. the above diagram is prepared using the Terrestrial calibration curve
(N.B. samples Hd-20755, Hd-20756 and Hd-20758 come out 400-800 years younger
if the Marine calibration curve is used).
The samples from MR6.1 (OZE-165 and OZE-166) and MR6.3 (NZA-8042) were
all dated using the AMS method.
SITE
CODE |
SAMPLE REFERENCE |
TYPE OF SAMPLE |
RADIOCARBON AGE BP |
LAB CODE |
CALIBRATED RADIOCARBON
DATE BC / AD (2 sigma) |
CALIBRATION METHOD |
DELTA 13C REL. PDB |
SAMPLE TAKEN
BY |
MR1 |
Sample A |
ash |
6314 +/- 74
BP |
Hd-20755 |
TERRESTRIAL
CALIBRATION CURVE:
5470 - 5431 BC (0.063)
5424 - 5397 BC
(0.048)
5392 - 5200 BC (0.695)
5180 - 5136 BC (0.093)
5132 - 5068 BC (0.100)
MARINE CALIBRATION CURVE:
5000 - 4656 BC (1.000)
|
CALIB4.4
- Stuiver et al. 1998a,b |
- 16.22 o/oo |
Dr. Geoffrey
King |
MR1 |
Sample B |
ash |
7036 +/- 30
BP |
Hd-20756 |
TERRESTRIAL
CALIBRATION CURVE:
5988 - 5940 BC (0.355)
5929 - 5839 BC (0.625)
5819 - 5812 BC (0.020)
MARINE CALIBRATION CURVE:
5621 - 5511 BC (1.000)
|
CALIB4.4
- Stuiver et al. 1998a,b |
- 14.81 o/oo |
Dr. Geoffrey
King |
MR1 |
Sample C |
ash |
6446 +/- 56
BP |
Hd-20758 |
TERRESTRIAL
CALIBRATION CURVE:
5505 - 5505 BC (0.001)
5482 - 5315 BC (0.993)
5309 - 5305 BC (0.006)
MARINE CALIBRATION CURVE:
5136 - 4823 BC (1.000)
|
CALIB4.4
- Stuiver et al. 1998a,b |
- 15.78 o/oo |
Dr. Geoffrey
King |
MR6.1 |
Feature 1 - Layer 12 |
charcoal |
1239 +/- 45 BP |
OZE-165 |
679 - 891 AD
(1.000) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 23.83 o/oo |
Nadia Iacono |
MR6.1 |
Feature 2 - Layer 12 |
charcoal |
1317 +/- 46 BP |
OZE-166 |
640 - 782 AD (0.978)
791 - 811 AD (0.017)
844 - 850 AD (0.004) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 22.90 o/oo |
Nadia Iacono |
MR6.3 |
Burial chamber |
2 human bone
samples |
981 +/- 67 BP |
NZA-8042 |
901 - 918 AD
(0.022)
958 - 1213 AD (0.978) |
CALIB4.4
- Stuiver et al. 1998a,b |
. |
Dr. Soren Blau |
MR9 |
Hearth 34 |
ash |
2255 +/- 35 BP |
OxA-8018 |
396 - 346 BC (0.335)
322 - 203 BC (0.665) |
CALIB4.4
- Stuiver et al 1998a,b |
- 21.3 o/oo |
Salvatore Garfi |
MR9 |
Hearth 58 |
ash |
2455 +/- 65 BP |
AA-35542 (GU-8455) |
775 - 403 BC (1.000) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 20.7 o/oo |
Salvatore Garfi |
MR9 |
Hearth 102 |
ash |
3685 +/- 65 BP |
AA-35541 (GU-8456) |
2278 - 2252 BC (0.025)
2230 - 2220 BC (0.008)
2207 - 1885 BC (0.967) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 20.5 o/oo |
Salvatore Garfi |
MR9 |
Hearth 126 |
ash |
2205 +/- 55 BP |
AA-35540
(GU-8457) |
393 - 147 BC (0.974)
135 - 114 BC (0.026) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 21.9 o/oo |
Salvatore Garfi |
MR9 |
Hearth 136 |
ash |
1775 +/- 45 BP |
AA-35539
(GU-8458) |
132 - 361 AD (0.970)
367 - 381 AD (0.030) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 22.3 o/oo |
Salvatore Garfi |
MR11.4 |
Context 26, Find no.16 |
ashy soil |
5850 +/- 50 BP |
SUERC-1181
(GU-11460) |
4833 - 4822 BC (0.016)
4807 - 4580 BC (0.959)
4569 - 4552 BC (0.025) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 15..3 o/oo |
Dr. Mark Beech |
MR11.6 |
Context 32, Find no.17 |
ashy soil |
5630 +/- 50 BP |
SUERC-1182
(GU-11461) |
4550 - 4350 BC (1.000) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 15.7 o/oo |
Dr. Mark Beech |
MR11.6 |
Context 58, Sample no.283 |
charcoal |
6750 +/- 40 BP |
SUERC-3612 |
5724 - 5618 CalBC (0.952)
5578 - 5563 CalBC (0.048)
|
CALIB4.4
- Stuiver et al. 1998a,b |
- 23.1 o/oo |
Dr. Mark Beech |
MR11.6 |
Context 55, Sample 195
|
charcoal |
6675 +/- 40 BP |
SUERC-3608 |
5663 - 5647 CalBC (0.052)
5644 - 5512 CalBC (0.927)
5497 - 5485 CalBC (0.021)
|
CALIB4.4
- Stuiver et al. 1998a,b |
- 23.4 o/oo |
Dr. Mark Beech |
RAS GHUMAYS [
for more information click
here ]
Sample GU-9186 comprised a scattering
of small charcoal fragments within a carbonate sand matrix. The bulk of
the woody material was dated, and one of the largest fragments, AA-40741
(GU-9186A), was separately dated by AMS. There is a difference between
the two results but given the uncertainties associated with the sample,
the magnitude of the difference is not too unreasonable.
SITE
CODE |
SAMPLE REFERENCE |
TYPE OF SAMPLE |
RADIOCARBON AGE BP |
LAB CODE |
CALIBRATED RADIOCARBON
DATE AD (2 sigma) |
CALIBRATION METHOD |
DELTA 13C
REL. PDB |
SAMPLE TAKEN
BY |
RG1 |
RG1/S2/
ADIAS2000/RC6 |
ashy sand |
620 +/- 50 BP |
GU-9186 |
1289 - 1410 AD (1.000) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 17.4 o/oo |
Dr. Mark Beech and Dr. Geoffrey
King |
RG1 |
RG1/S2/
ADIAS2000/RC6 |
charcoal (selected from ashy
sand) |
405 +/- 40 BP |
AA-40741 (GU-9186A) |
1429 - 1525 AD (0.742)
1559 - 1630 AD (0.258) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 19.8 o/oo |
Dr. Mark Beech and Dr. Geoffrey
King |
RG1 |
RG1/S3/
ADIAS2000/RC7 |
ashy sand |
610 +/- 50 BP |
GU-9187 |
1292 - 1413 AD (1.000) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 17.1 o/oo |
Dr. Mark Beech and Dr. Geoffrey
King |
RUFAYQ [ for more information click
here ]
SITE
CODE |
SAMPLE REFERENCE |
TYPE OF SAMPLE |
RADIOCARBON AGE BP |
LAB CODE |
CALIBRATED RADIOCARBON
DATE BC (2 sigma) |
CALIBRATION METHOD |
DELTA 13C REL. PDB |
SAMPLE TAKEN
BY |
RU2.2 |
RU2.2/
ADIAS2000/RC1 |
ashy sand/charcoal |
2790 +/- 70 BP |
GU-9156 |
1185 - 1185 BC (0.001)
1126 - 811 BC (0.999) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 22.0 o/oo |
Dr. Geoffrey King |
RU2.3 |
RU2.3/
ADIAS2000/RC2 |
ashy sand/charcoal |
2890 +/- 110 BP |
GU-9157 |
1373 - 1338 BC (0.033)
1319 - 832 BC (0.967) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 20.9 o/oo |
Dr. Geoffrey King |
RU5.1 |
RU5.1/
ADIAS2000/RC3 |
ashy sand/charcoal |
2800 +/- 50 BP |
GU-9158 |
1110 - 1100 BC (0.011)
1080 - 1061 BC (0.018)
1053 - 829 BC (0.971) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 20.6 o/oo |
Dr. Geoffrey King |
RU5.2 |
RU5.2/
ADIAS2000/RC4 |
ashy sand/charcoal |
2480 +/- 60 BP |
GU-9159 |
781 - 478 BC (0.857)
471 - 411 BC (0.143) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 22.5 o/oo |
Dr. Geoffrey King |
SIR BANI YAS [
for more information click
here ]
Sample GU-9185 was dated by radiometric
analysis, and a small residue was also dated by AMS, AA-40740 (GU-9185A).
Although there is a difference in age, there is overlap at 2 sigma.
SITE
CODE |
SAMPLE REFERENCE |
TYPE OF SAMPLE |
RADIOCARBON AGE BP |
LAB CODE |
CALIBRATED RADIOCARBON
DATE AD (2 sigma) |
CALIBRATION METHOD |
DELTA 13C
REL. PDB |
SAMPLE TAKEN
BY |
SBY9 |
SBY9/124/
ADIAS2000/RC5 |
charcoal |
1460 +/- 70 BP |
GU-9185 |
432 - 677 AD (1.000) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 25.4 o/oo |
Dr. Joseph Elders and Dr.
Mark Beech |
SBY9 |
SBY9/124/
ADIAS2000/RC5 |
charcoal |
1305 +/- 50 BP |
AA-40740 (GU-9185A) |
644 - 783 AD (0.918)
789 - 828 AD (0.055)
840 - 862 AD (0.028) |
CALIB4.4
- Stuiver et al. 1998a,b |
- 25.9 o/oo |
Dr. Joseph Elders and Dr.
Mark Beech |
REFERENCES
Online web version of CALIB4.4
- http://radiocarbon.pa.qub.ac.uk/calib/calib.html
Stuiver, M., P.J. Reimer, E. Bard,
J.W. Beck, G.S. Burr, K.A. Hughen, B. Kromer, F.G. McCormac, J. v.d. Plicht,
and M. Spurk. 1998a. Radiocarbon 40:1041-1083.
Stuiver, M., P.J. Reimer, and
T.F. Braziunas. 1998b. Radiocarbon 40: 1127-1151 (revised
dataset); Stuiver, M. and Braziunas, T.F. (1993) The Holocene 3: 289-305.
(original dataset).
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