te: Wed, 4 Oct 1995 07:04:23 -0600 Reply-To: palynolo@geo.arizona.edu Sender: Radiocarbon Mailing List From: "Owen K. Davis" Subject: Re: dating labs Dear Radiocarbon Community, I'm distributing the following message from a palynologist in Spain. Jose Carrion is very active*, and I'm sure that anyone who would like to collaborate with him would be very pleased with the results. Owen. *the most recent publication by J.S. Carrion that I've received is in J. Archaeological Sci. (1995) 22:355-367. carrion@fcu.um.es writes: > Dear Owen, > > I need information about labs involved in dating of breccias, stalagmitic > crusts, and mineral deposits poor in organic matter. Ages should vary > between 150 kyr to present. I know that of Miami for radiocarbon > procedure, where several of our samples have been dated. But I would > like to have more information about other labs, cost of dating, time for > dates availability and so on. Could you perhaps help me? > > Jose Carrion > > Owen K. Davis, Ph.D. Phone 520 621 7953 Professor of Geosciences FAX 520 621 2672 University of Arizona palynolo@geo.arizona.edu Tucson, AZ 85721 http://www.geo.arizona.edu/palynology ========================================================================= Date: Tue, 10 Oct 1995 10:30:50 -0700 Reply-To: Radiocarbon Mailing List Sender: Radiocarbon Mailing List From: Robert Holloway Subject: Free Web page listings Nevada Technical Associates, Inc. has some web pages devoted to radiaton safety, radiochemistry and related areas. On an experimental basis I will make these pages available at no charge to anyone who wants to advertise used equipment for sale. Equipment should be related to radiation work. Examples of the type of equipment that I would like to list are laboratory counting equipment, survey meters, used books, journals etc. Free advertising will be restricted to those who are not vendors of equipment. Commercial vendors may list equipment but there will be a small charge. I would especially welcome listings of liquid scintillation counters. These pages can be accessed at http://ntanet.net/ To list equipment, send me an email at Holloway3@AOL.Com or fax your material to 702-564-2798 (voice also) Robert Holloway R. ========================================================================= Date: Tue, 10 Oct 1995 14:22:31 -0700 Reply-To: Radiocarbon Mailing List Sender: Radiocarbon Mailing List From: David Sewell Subject: Radiocarbon WWW server back online The RADIOCARBON WWW server is back online after six weeks off the Internet, at http://packrat.aml.arizona.edu/. (It took that long for damaged caused by a lightning strike on a microwave relay to be completed; our whole subnet was affected.) There's not much new, since we've been working frantically on completing Proceedings volumes, but please forward to me any information about new radiocarbon-related online resources that should have links from our page. An update on Renee Kra: she had surgery back on 1 September to remove the lung tumor site and some lymph nodes, and post-operative tests showed no evidence of remaining cancer in her system, the best result possible. She's recuperating at home and planning to return to work officially, at least part-time, at the end of this month. David Sewell -- RADIOCARBON: An International Journal of Cosmogenic Isotope Research Department of Geosciences, University of Arizona 4717 E. Ft. Lowell Rd., Tucson, Arizona 85712 USA Telephone: 1-520-881-0857 Fax: 1-520-881-0554 General e-mail address: c14@packrat.aml.arizona.edu ========================================================================= Date: Mon, 16 Oct 1995 20:08:23 +0900 Reply-To: Radiocarbon Mailing List Sender: Radiocarbon Mailing List From Have there been new developments or further discussion or alternative discussion to the article by Hedges, Tiemei, and Housley, "Results and Methods in the Radiocarbon Dating of Pottery" in _Radiocarbon_ 34 (1992): 906-915? Anything current on this woappreciated. Greg Doudna West Linn, Oregon USA gdoudna@ednet1.osl.or.gov -- ========================================================================= Date: Tue, 24 Oct 1995 09:18:43 +1200 Reply-To: Radiocarbon Mailing List Sender: Radiocarbon Mailing List From: Tom Higham Subject: Re: Dating of pottery Greg Doudna wrote: >Have there been new developments or further discussion or >alternative discussion to the article by Hedges, Tiemei, and >Housley, "Results and Methods in the Radiocarbon Dating of >Pottery" in _Radiocarbon_ 34 (1992): 906-915? Anything current >on this woappreciated. I don't have a direct answer to the above question, but on a related matter which may be of interest, in the 1994 Radiocarbon conference there was a paper by E. Delque (Centre de Datation par le Radiocarbone, Universite Claude Bernard Lyon, Villeurbanne, France) entitled "Direct radiocarbon dating of potteries: selective heat treatment to pick up carbon from smoking". Basically it was about the use of different temperatures to remove carbon within the pottery derived from old clays and from the material used in the firing technique, ie the carbon from the smoking or firing of the pot. The author used two different measurement methods (LSC & AMS) and tested them on pottery which had been made by them and also on prehistoric pottery. From what I can remember the results seemed alright. I don't have any more information but the paper will probably be published in the new conference edition of Radiocarbon. I don't know how this relates to the paper you mention. Cheers, --------------------------------------------------------------------------- Dr Thomas Higham, * Email: Thigham@waikato.ac.nz Research Officer-Archaeological Dating * Phone: +(64) 07 838 4278 Radiocarbon Dating Laboratory, * GlobalFax: +(64) 7 838 4192 University of Waikato, * WWW server (with Online Hamilton, * C14 submission forms):- NEW ZEALAND. * http://www2.waikato.ac.nz/c14/ --------------------------------------------------------------------------- ========================================================================= Date: Tue, 31 Oct 1995 09:26:49 +1200 Reply-To: Radiocarbon Mailing List Sender: Radiocarbon Mailing List From: Tom Higham Subject: Radiocarbon WEB-info Dear List members, We have been developing a series of World Wide Web (WWW) pages concerned with the 14C method and its application called "Radiocarbon WEB-info". Many Usenet newsgroups possess FAQ's (Frequently Asked Questions, now on web pages) which serve as a guide to the more commonly asked questions and requests for information. Some, such as Talk.Origins, provide information on radioisotopic dating techniques but not in any great detail. Many radiocarbon specialists receive requests for information on the radiocarbon method, its application, publication details for dates, the meaning of calibrated data etc etc. We have been working on a WWW server to provide this information electronically. Centred on the University of Waikato Web server in New Zealand, with links to other pages presently at the Oxford Accelerator lab and at the Radiocarbon server, we hope it will provide an integrated resource able to be accessed by anyone from radiocarbon specialists to submitters of radiocarbon dates to high school students. The great advantage of this type of resource is that it can grow and be added to as the need arises and constantly evolve and develop. We see our effort so far very much as a first step. Please feel free to access and comment on it. At present it is still under construction with more information and pictures to be added and modified. You will, of course, need to obtain a copy of a browser such as Netscape to read this, but the URL address of the server is: http://www2.waikato.ac.nz/c14/webinfo/index.html Information currently developed includes: 1. Introduction, the basis of the radiocarbon method, types of material able to be dated, limit of application etc. 2. Submission of samples for dating. 3. Measurement techniques, Conventional and AMS. 4. Radiocarbon date calculation, statistical considerations, isotopic fractionation etc. 5. Sample types, pretreatment and contamination. 6. Corrections to 14C ages, reservoir effects, thermonuclear bomb carbon. 7. Calibration of radiocarbon dates. 8. Applications of 14C; archaeology, geology, oceanography, soil science, biomedical fields, etc etc. 9. Publication and dissemination of radiocarbon dates. Reporting and publication of 14C dates, conventional and calibrated (link to Radiocarbon's Stuiver and Polach 1977). 10. References and other useful publications. Many scholars have available a variety of text, graphics and bibliographic sources which could be made available to the wider scientific/electronic community. If there is anybody who would like to contribute to this resource could they email us, or the List? We will volunteer to convert any material in html and graphic form for WWW use if necessary. We particularly require basic information regarding gas proportional counting, dating of different materials in particular soils and examples of applications of radiocarbon dating in a variety of fields. Please check out the web server and send comments or criticisms, advice etc and if you would like to contribute anything to one of the areas listed above, please contact the administrator (thigham@waikato.ac.nz). T. Higham (Administrator - University of Waikato Radiocarbon Laboratory, NZ). C. B Ramsey (Oxford Radiocarbon Accelerator Unit, University of Oxford, UK). D. Sewell (Radiocarbon, US). A. Hogg (University of Waikato Radiocarbon Laboratory, NZ). F.Petchey (Doctoral candidate, Waikato lab, NZ). --------------------------------------------------------------------------- Dr Thomas Higham, * Email: Thigham@waikato.ac.nz Research Officer-Archaeological Dating * Phone: +(64) 07 838 4278 Radiocarbon Dating Laboratory, * GlobalFax: +(64) 7 838 4192 University of Waikato, * WWW server (with Online Hamilton, * C14 submission forms):- NEW ZEALAND. * http://www2.waikato.ac.nz/c14/ --------------------------------------------------------------------------- ========================================================================= Date: Tue, 31 Oct 1995 19:31:04 -0600 Reply-To: Radiocarbon Mailing List Sender: Radiocarbon Mailing List From: Ken Brown Subject: Recommended dispersant for clays? I wish to extract, from raw sediment samples, clays for radiocarbon assay of bound organics. I, as submitter, prefer to do the clay extraction myself, rather than leaving it to the radiocarbon lab; I want to extract clays by pipetting from a settling tube. What sort of clay dispersant can I use that will not interfere with subsequent pretreatment procedures? Sodium hexametaphosphate (NaPO3)6 is the most commonly used dispersant for particle size analysis and other procedures where a dispersant is required, but how suitable is it for humate samples destined for radiocarbon assay? ___________________________________________________________ Ken Brown Texas Archeological Research Lab J.J. Pickle Research Campus 5 Austin, Texas 78712-1100 phone (voice mail):(512)471-3990 ========================================================================= Date: Wed, 1 Nov 1995 01:28:01 -0500 Reply-To: Radiocarbon Mailing List Sender: Radiocarbon Mailing List From: Tony Morgan Subject: Re: Recommended dispersant for clays? I am afraid I am not much help on this particular question, however, I suggest you contact BETA ANALYTIC (Miami, FL). They have always been very helpful to me with questions/problems re: radiocarbon dating. Tony Morgan HEYUCOACH@aol.com Quaternary Investigations, Inc. Colton, CA Previous Item Next Item Connected to Microsoft Exchange