========================================================================= 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 Content-Type: multipart/alternative; boundary="_000_576B0BC4C2F0664A97DD1532491715421A382D1340EX2K7VIRT4ads_" MIME-Version: 1.0 --_000_576B0BC4C2F0664A97DD1532491715421A382D1340EX2K7VIRT4ads_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable 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 To unsubscribe from this list, send the command SIGNOFF C14-L to LISTSERV@LISTSERV.ARIZONA.EDU, or send a request to C14-L-request@LISTSERV.ARIZONA.EDU. --_000_576B0BC4C2F0664A97DD1532491715421A382D1340EX2K7VIRT4ads_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
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 To unsubscribe from this list, send the command SIGNOFF C14-L to LISTSERV@LISTSERV.ARIZONA.EDU, or send a request to C14-L-request@LISTSERV.ARIZONA.EDU. --_000_576B0BC4C2F0664A97DD1532491715421A382D1340EX2K7VIRT4ads_-- ========================================================================= 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 MIME-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit 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. =========================================================================== To unsubscribe from this list, send the command SIGNOFF C14-L to LISTSERV@LISTSERV.ARIZONA.EDU, or send a request to C14-L-request@LISTSERV.ARIZONA.EDU. ========================================================================= 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 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_003B_01C977C4.58F7F3F0" This is a multipart message in MIME format. ------=_NextPart_000_003B_01C977C4.58F7F3F0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit 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 =========================================================================== To unsubscribe from this list, send the command SIGNOFF C14-L to LISTSERV@LISTSERV.ARIZONA.EDU, or send a request to C14-L-request@LISTSERV.ARIZONA.EDU. ------=_NextPart_000_003B_01C977C4.58F7F3F0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable 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 To unsubscribe from this list, send the command SIGNOFF C14-L to LISTSERV@LISTSERV.ARIZONA.EDU, or send a request to C14-L-request@LISTSERV.ARIZONA.EDU. ------=_NextPart_000_003B_01C977C4.58F7F3F0-- ========================================================================= 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 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0051_01C97C73.9BEBE0A0" This is a multipart message in MIME format. ------=_NextPart_000_0051_01C97C73.9BEBE0A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable 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 To unsubscribe from this list, send the command SIGNOFF C14-L to LISTSERV@LISTSERV.ARIZONA.EDU, or send a request to C14-L-request@LISTSERV.ARIZONA.EDU. ------=_NextPart_000_0051_01C97C73.9BEBE0A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable 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 To unsubscribe from this list, send the command SIGNOFF C14-L to LISTSERV@LISTSERV.ARIZONA.EDU, or send a request to C14-L-request@LISTSERV.ARIZONA.EDU. ------=_NextPart_000_0051_01C97C73.9BEBE0A0-- ========================================================================= 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 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/html; charset=ISO-8859-1
Just a reminder that applications for this position closes on t= he 1st Feb 2009.  See application details below.
 
http://www.gns.cri.nz/nic/index.html

<= b>Stable Isotope Laboratory Manager –= GNS Science, New Zealand

The 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 To unsubscribe from this list, send the command SIGNOFF C14-L to LISTSERV@LISTSERV.ARIZONA.EDU, or send a request to C14-L-request@LISTSERV.ARIZONA.EDU. Connected to Microsoft Exchange