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Date: Fri, 9 Jan 2009 12:24:51 +0000
Reply-To: Radiocarbon Mailing List
Sender: Radiocarbon Mailing List
From: Inigo Auza-Aldasoro
Subject: Direct absorption vs Benzene/AMS
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Dear colleagues,
I'm trying to highlight the Direct Absorption Line method advantages respec=
t to benzene synthesis and AMS/graphite methods. I know the disadvantages (=
i.e. less accuracy and precission) but I would be interested on information=
about the time needed to process samples for benzene and AMS, and if it is=
possible the commercial costs per analysis for these methods.
Best regards,
Inigo.
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
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Dear colleagues,
I'm trying to highlight the Direct Absorption Line method advantages respec=
t to benzene synthesis and AMS/graphite methods. I know the disadvantages (=
i.e. less accuracy and precission) but I would be interested on information=
about the time needed to process
samples for benzene and AMS, and if it is possible the commercial costs pe=
r analysis for these methods.
Best regards,
Inigo.
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
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Date: Thu, 15 Jan 2009 14:38:49 +0000
Reply-To: Radiocarbon Mailing List
Sender: Radiocarbon Mailing List
From: Paula Reimer
Subject: PhD studentship in radiocarbon dating land snails
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Dear colleagues,
Please bring this to the attention of anyone who might be interested.
Many thanks,
Drs Paula Reimer & Chris Hunt
****************************************************************************************************************************************
Applications are invited for a PhD studentship on radiocarbon dating of
land snails based in the School of Geography, Archaeology and
Palaeoecology, Queen’s University Belfast, Belfast, Northern Ireland for
entry in 2009-10. Please note the deadline for consideration for funding
is 31 January 2009.
The project: Many Quaternary deposits and archaeological sites in the
Mediterranean coastlands are rich in land molluscs but poor in other
potentially-dateable material. Radiocarbon dates on land molluscs are
relatively common, but several authors, most recently Romaniello (et
al.* *2008, /Quat. Geochron/. 3, 68-75) have pointed out that a number
of Mediterranean species show ^14 C age anomalies in modern specimens,
apparently related to sources of old carbon in their diets. It is
necessary to resolve these age anomalies in order to use land mollusc
shells for reliable dating. The project aims to enable reliable dating
of ancient land snail shells from the Mediterranean coastlands by
resolving the prevalence and magnitude of ^14 C age anomalies in (1)
collections of modern land molluscs from North Africa, the Maltese
Islands and southern Italy and (2) collections of land molluscs from the
same regions from well-stratified contexts where high-precision dates
from other materials are also available. It will also explore the routes
by which old carbon may be taken into the mollusc shell, by analysis of
the diets of key species. The project should enable the reliable
extension of radiocarbon dating into land mollusc shell, a class of
material where there is currently significant doubt about the quality of
dates. This will enable the reliable dating of suites of deposits which
are currently extremely difficult to date, in regions where there are
few other types of material available. The project will use material
from current projects at the internationally important sites of Haua
Fteah (Libya) and the Brochtorff Circle (Gozo, Maltese Islands),
together with material from a past project in the Biferno Valley
(southern Italy). Support for field-trips to North Africa is available
from the Cyrenaica Prehistory Project, co-led by Dr Hunt, which has
British Academy and European funding, plus support in kind from the
Libyan State Antiquities Department.
**Special requirements: Detailed knowledge of the theory of radiocarbon
dating and dating laboratory experience are highly desirable. Experience
of Quaternary deposits or archaeology in the Mediterranean or of mollusc
palaeoecology is desirable.
Project Supervisors:* *Dr C O Hunt, Dr P Reimer
Funding: A full studentship covers approved tuition fees and a stipend
of £13,290 pa up to 3 years. To be eligible for consideration for
funding through the Department of Education and Learning (DEL),
candidates must satisfy criteria relating to academic qualifications,
residency and nationality/citizenship including
* Candidates should hold at least a 1st class or 2:1 Honours degree
or equivalent in Geography, Archaeology or related subject,
depending upon the research project.
* be ordinarily resident in the UK and Islands (since 1 October
2006). For non-UK, EU applicants, ordinary residency may include
full-time education.
The final closing date for consideration of DEL awards is 31st January 2009.
For application procedures, further details and other available projects
please see our website at
http://www.qub.ac.uk/schools/gap/ProspectiveStudents/PostgraduateStudies/NewPhDProjects2009-2010/
--
Paula J. Reimer, Director
Centre for Climate, the Environment & Chronology (14CHRONO)
School of Geography, Archaeology and Palaeoecology
Queen's University Belfast
e-mail: p.j.reimer@qub.ac.uk
Phone: 028 9097 3980
FAX: 028-9097-3897
International callers:
Phone: +44 28 9097 3980
FAX: +44 28-9097-3897
Websites:
www.chrono.qub.ac.uk
www.calib.org
Mailing/Shipping address:
Archaeology & Palaeoecology Building
Queen's University Belfast
42 Fitzwilliam Street
Belfast BT9 6AX
U.K.
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Date: Fri, 16 Jan 2009 10:22:34 -0700
Reply-To: Radiocarbon Mailing List
Sender: Radiocarbon Mailing List
From: Mark McClure
Subject: PhD position in Biogeochemistry
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Ph.D. Position in Biogeochemistry
Compound-specific radiocarbon dating of lake sediments
We invite applications for a three-year Ph.D. position at the ETH Zurich,
Switzerland, opening April 1st, 2009.
The goal of the project is to further develop the technique of
compound-specific radiocarbon dating. Good age models of natural archives
like lake sediments are a primary prerequisite for their use for e.g.
climate reconstruction. However, only a small fraction of studied lakes
contains recognizable terrestrial macrofossils that can be used for
radiocarbon dating. In order to circumvent this problem, compound-specific
radiocarbon dating can be performed on organic compounds derived from either
terrestrial material that has not been pre-aged in the soils in the
catchments, or from an aquatic source if no hard water effect is present.
The Ph.D. project will focus on the practical aspects of analysis and
purification of individual compounds from the complex mixture of lake
sedimentary organic matter, as well as on radiocarbon dating of small
samples. Techniques involved will be liquid chromatography, gas
chromatography, and the operation of a newly developed gas-source for sample
introduction into an accelerator mass spectrometer (AMS). Collection of
fresh lake sediment cores will also likely be part of the work.
The project will be performed in close conjunction with another Ph.D.
project that started last year, and that focuses on the use of
compound-specific radiocarbon dating from lake sediments in order to
reconstruct soil carbon dynamics. The successful applicant will join the
Climate Geology group within the Geological Institute at the ETH, that
harbours active research in the field of climate change on 'geologic' to
annual timescales, paleoceanography, limnogeology, and biogeochemical
cycling processes in oceans and lakes. Further details at
http://www.climategeology.ethz.ch
An M.Sc. or comparable degree is required in any field related to
biogeochemistry or earth sciences, in the broadest sense. Preference will be
given to candidates with some laboratory experience.
For further inquiries and applications please contact:
Dr. Stefano Bernasconi, stefano.bernasconi@erdw.ethz.ch or
Dr. Rienk Smittenberg, smittenberg@erdw.ethz.ch or
Dr. Irka Hajdas, hajdas@phys.ethz.ch
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PhD position in Biogeochemistry
Ph.D. Position in =
Biogeochemistry
Compound-specific =
radiocarbon dating of lake sediments
We invite applications for a =
three-year Ph.D. position at the ETH Zurich, Switzerland, opening April =
1st, =
2009.
The goal of the project is to further develop the technique of compound-specific =
radiocarbon dating. Good age models of natural archives like lake =
sediments are a primary prerequisite for their use for e.g. climate =
reconstruction. However, only a small fraction of studied lakes contains =
recognizable terrestrial macrofossils that can be used for radiocarbon =
dating. In order to circumvent this problem, compound-specific =
radiocarbon dating can be performed on organic compounds derived from =
either terrestrial material that has not been pre-aged in the soils in =
the catchments, or from an aquatic source if no hard water effect is =
present. =
The Ph.D. project will focus on the practical =
aspects of analysis and purification of individual compounds from the =
complex mixture of lake sedimentary organic matter, as well as on =
radiocarbon dating of small samples. Techniques involved will be liquid =
chromatography, gas chromatography, and the operation of a newly =
developed gas-source for sample introduction into an accelerator mass =
spectrometer (AMS). Collection of fresh lake sediment cores will also =
likely be part of the work.
The project will be performed in close conjunction =
with another Ph.D. project that started last year, and that focuses on =
the use of compound-specific radiocarbon dating from lake sediments in =
order to reconstruct soil carbon dynamics. The successful applicant will =
join the Climate Geology group within the Geological Institute at the =
ETH, that harbours active research in the field of climate change on =
'geologic' to annual timescales, paleoceanography, limnogeology, and =
biogeochemical cycling processes in oceans and lakes. Further details =
at http://www.climategeology.ethz.ch
An M.Sc. or comparable degree is required in any field =
related to biogeochemistry or earth sciences, in the broadest sense. =
Preference will be given to candidates with some laboratory =
experience.
For further inquiries and applications please =
contact:
Dr. Stefano =
Bernasconi, stefano.bernasconi@erdw.ethz.ch or
Dr. =
Rienk Smittenberg, smittenberg@erdw.ethz.ch or
Dr. Irka =
Hajdas, hajdas@phys.ethz.ch
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
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Date: Thu, 22 Jan 2009 09:27:13 -0700
Reply-To: Radiocarbon Mailing List
Sender: Radiocarbon Mailing List
From: Mark McClure
Subject: IOC voting results
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Hello all,
We wanted to thank you for voting for the IntCal Organizing Committee =
(IOC)
nominees. After nearly 300 votes, we are pleased to announce the three =
who
earned the most votes in their respective categories. All three have =
agreed
to accept the nomination and serve on the IOC, the oversight committee =
for
the IntCal Working Group (IWG).
Congratulations to Marian Scott (statistics), Christine Hatt=E9 =
(terrestrial
paleoscience), and Haflidi Haflidason (marine paleoscience).
Thank you again for all your votes.
Best,
Mark
Mark McClure
RADIOCARBON Managing Editor
Univ. of Arizona, Dept. of Geosciences
4717 E. Fort Lowell Rd, #104
Tucson, AZ USA 85712
520-881-0857 phone
520-881-0554 fax
www.radiocarbon.org
=20
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
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IOC voting results
Hello =
all,
We wanted to =
thank you for voting for the IntCal Organizing Committee (IOC) =
nominees. After nearly 300 votes, we are pleased to announce the =
three who earned the most votes in their respective =
categories. All three have agreed to accept the nomination =
and serve on the IOC, the oversight committee for the IntCal Working =
Group (IWG).
Congratulations =
to Marian Scott (statistics), Christine Hatt=E9 (terrestrial =
paleoscience), and Haflidi Haflidason (marine paleoscience).
Thank you again =
for all your votes.
Best,
Mark
Mark McClure
RADIOCARBON Managing Editor
Univ. of Arizona, Dept. of Geosciences
4717 E. Fort Lowell Rd, #104
Tucson, AZ=A0 USA 85712
520-881-0857 phone
520-881-0554 fax
www.radiocarbon.org
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
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Date: Wed, 28 Jan 2009 14:13:57 +1300
Reply-To: Radiocarbon Mailing List
Sender: Radiocarbon Mailing List
From: Kevin Faure
Subject: Stable Isotope Laboratory Manager position - GNS Science,
New Zealand
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Just a reminder that applications for this position closes on t=
he 1st Feb 2009. See application details below.
<=
b>
Stable Isotope Laboratory Manager –=
GNS Science, New ZealandThe National Isotope Centre (NIC), a division of GNS Science, is the premi=
er source of applied isotope science capability in New Zealand. Its researc=
h and commercial activities are supported by a sophisticated technical infr=
astructure, including a modern stable isotope laboratory, particle accelera=
tors for accelerator mass spectrometry and ion beam analysis, a tritium ana=
lysis facility, chemical laboratories for sample pretreatment, and an ice c=
ore research facility. We ar=
e seeking a suitably qualified and motivated person for the position of Sta=
ble Isotope Laboratory Manager for our National Isotope Centre, which overl=
ooks the Wellington Harbour in New Zealand. Over the last three years the l=
aboratory has been modernised and now has 5 isotope ratio mass spectrometer=
s (3 IsoPrimes and 2 Geo 20-20's), and 8 peripherals to measure the common =
5 light isotopes in almost any phase. The laboratory manager is supported b=
y 3 experienced technicians. The successful candidate will have had previou=
s experience in laboratory management, a PhD in Geoscience or a related dis=
cipline, a track record of publications in stable isotope geochemistry, exc=
ellent organisational skills and ability to work and collaborate within mul=
tidisciplinary research teams. The position is permanent and immediate.
To obtain a position descrip=
tion or to apply for this position, please visit our website =
https://vacancies.gns.cri.nz<=
/u> and follow the online proce=
ss.
Closing date: Sun=
day, 1st February 2009
Vacanc=
y number: 1597
Notice: This email and any attachments=
are confidential. If received in error please destroy and immediately noti=
fy us. Do not copy or disclose the contents.
=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
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