The Collaborative International Dictionary of English v.0.48:

Date \Date\, v. t. [imp. & p. p. Dated; p. pr. & vb. n.
   Dating.] [Cf. F. dater. See 2d Date.]
   1. To note the time of writing or executing; to express in an
      instrument the time of its execution; as, to date a
      letter, a bond, a deed, or a charter.
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   2. To note or fix the time of, as of an event; to give the
      date of; as, to date the building of the pyramids.
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   Note: We may say dated at or from a place.
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               The letter is dated at Philadephia. --G. T.
                                                  Curtis.
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               You will be suprised, I don't question, to find
               among your correspondencies in foreign parts, a
               letter dated from Blois.           --Addison.
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               In the countries of his jornal seems to have been
               written; parts of it are dated from them. --M.
                                                  Arnold.
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WordNet (r) 3.0 (2006):

dating
    n 1: use of chemical analysis to estimate the age of geological
         specimens [syn: dating, geological dating]