Sample Submission


To send samples to Keck-CCAMS at the UC Irvine for analysis, the following steps are required:

Submitters, and in particular those making their first application, must make contact with the laboratory to discuss their requirements prior to actually submitting samples. See contacts for more info.

A submission form plus a sample list provided must be filled out (see guidance document) for each group of samples submitted and sent to us via mail, fax or e-mail. A hard copy of both must also accompany the samples.

The AMS prep. laboratory is currently equipped to handle routine processing of charcoal, wood, seed, carbonates, animal remains, etc. However, it is up to the submitter to define and select the materials to be dated: for example, since you know your samples far better than we do, it’s your job to pick out the macrofossils or charcoal to be dated from within the sediment or peat matrix. Specialized services such as pollen or foram picking or individual compound separation are not offered. We discourage the dating of bulk soil, peat, or sediments, because those materials are often a mixture of components with widely differing ages. The preferred minimum sample size for a 14C measurement is 1 mg carbon. The sample sizes quoted in the table below will yield approximately this amount, if the samples are well preserved. If this is not the case, more sample material will be required.

Guidance Document


Please fill out the sample submission form and provide the following additional information:

  1. Brief (a few sentences) description of the project including overall objectives, reason for 14C measurements, any relevant previous dating work, etc.
  2. Brief description of sampling methodology and any pre-treatment already applied (eg, forams picked from marine sediments, sonicated in alcohol, etc).
  3. Sample list: your lab number for each sample; a descriptive ID if is available (containing eg, stratigraphic information, species/sample material, etc – core 58PC, 325 cm , bulloides); sample type (CO2, macrofossil, graphite, HPLC fraction, etc); measured or estimated carbon content; approximate expected age (eg bomb 14C, modern, Holocene, ca. 40ka, etc).
  4. Assessment of possible problems in interpretation, if applicable.

THE SUBMISSION FORM AND SAMPLE LIST SHOULD BE SENT VIA HARD COPY AND ELECTRONICALLY TO:

For Terrestrial Carbon Cycle applications
Claudia Czimczik czimczik@uci.edu
Xiaomei Xu xxu@uci.edu
Keck – CCAMS Group
Earth System Science Department
2222B Croul Hall
University of California, Irvine
Irvine, CA 92697-3100
Phone: +1 949 824 3444 (Lab)
For Ocean Sciences applications
Ellen Druffel edruffel@uci.edu
Sheila Griffin sgriffin@uci.edu
Keck – CCAMS Group
Earth System Science Department
2212B Croul Hall
University of California, Irvine
Irvine, CA 92697-3100
Phone: +1 949 824 3286 (Lab)
For Paleoclimatology, Paleoceanography and other applications
John Southon jsouthon@uci.edu
Guaciara dos Santos gdossant@uci.edu
Keck – CCAMS Group
Earth System Science Department
B321 Croul Hall
University of California, Irvine
Irvine, CA 92697-3100
Phone: +1 949 824 3674 (Lab)

Contact

Keck – CCAMS Group
Earth System Science Department
2222B Croul Hall
University of California, Irvine
Irvine, CA 92697-3100
Phone: +1 949 824 3444 (Lab)