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The situation is more complex for organisms formed in other reservoirs, such as lakes and oceans. Here the initial specific <jats:sup>14<\/jats:sup>C activity may differ from that of the contemporaneous atmosphere. The measured remaining <jats:sup>14<\/jats:sup>C activity of samples formed in such reservoirs not only reflects <jats:sup>14<\/jats:sup>C decay (related to sample age) but also the reservoir <jats:sup>14<\/jats:sup>C activity. As the measured sample <jats:sup>14<\/jats:sup>C activity figures into the calculation of a conventional <jats:sup>14<\/jats:sup>C age (Stuiver &amp; Polach 1977), apparent <jats:sup>14<\/jats:sup>C age differences occur when contemporaneously grown samples of different reservoirs are dated.<\/jats:p>","DOI":"10.1017\/s0033822200013874","type":"journal-article","created":{"date-parts":[[2016,7,20]],"date-time":"2016-07-20T01:08:12Z","timestamp":1468976892000},"page":"137-189","source":"Crossref","is-referenced-by-count":922,"title":["Modeling Atmospheric <sup>14<\/sup>C Influences and <sup>14<\/sup>C Ages of Marine Samples to 10,000 BC"],"prefix":"10.1017","volume":"35","author":[{"given":"Minze","family":"Stuiver","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Thomas F.","family":"Braziunas","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"56","published-online":{"date-parts":[[2016,7,18]]},"reference":[{"key":"S0033822200013874_ref2","unstructured":"Alley R. 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