Skip to main content Accessibility help
×
Home

Radiocarbon Age Anomalies in Land Snail Shells from Texas: Ontogenetic, Individual, and Geographic Patterns of Variation

  • Glenn A Goodfriend (a1), G Lain Ellis (a2) and L J Toolin (a3)

Abstract

Accelerator mass spectrometric (AMS) radiocarbon analyses of live-collected, prebomb samples of shell carbonates of the land snails Rabdotus dealbatus and R. alternatus from Texas were carried out to quantify the characteristic age anomalies of land snails from limestone areas. Age anomalies are similar for the two species; they average +700 yr and vary by ±180 yr (1σ) among samples. Serial analysis of 1 shell reveals a significant ontogenetic trend in 14C age anomalies, with older apparent ages (up to 1200 yr) in the apical part of the shell and younger and uniform ages in the last whorl. No trend in age anomalies was found across a broad range of rainfall conditions (from 300 to 1000 mm mean annual rainfall).

    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      Radiocarbon Age Anomalies in Land Snail Shells from Texas: Ontogenetic, Individual, and Geographic Patterns of Variation
      Available formats
      ×

      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      Radiocarbon Age Anomalies in Land Snail Shells from Texas: Ontogenetic, Individual, and Geographic Patterns of Variation
      Available formats
      ×

      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      Radiocarbon Age Anomalies in Land Snail Shells from Texas: Ontogenetic, Individual, and Geographic Patterns of Variation
      Available formats
      ×

Copyright

References

Hide All
Abbott, JT, Ellis, GL, Goodfriend, GA. 1995. Chronometric and integrity analysis using land snails. In: Abbott, JT, Trierweiler, WN, editors. NRHP significance testing of 57 prehistoric archeological sites on Fort Hood, Texas. Volume 2. Archeological Resource Management Series, US Army, Fort Hood. Research report nr 34:801–14.
Abbott, JT, Goodfriend, GA, Ellis, GL. 1996. Landsnail investigations. In: Trierweiler, WN, editor. Archeological testing at Fort Hood: 1994–1995. Volume 2. Archeological Resource Management Series, US Army, Fort Hood. Research report nr 35:619–36.
Burleigh, R, Kerney, MP. 1982. Some chronological implications of a fossil molluscan assemblage from a Neolithic site at Brook, Kent, England. Journal of Archaeological Science 9:29–38.
Ellis, GL, Goodfriend, GA. 1994. Chronometric and site-formation studies using land snail shells: Preliminary results. In: Trierweiler, WN, editor. Archeological investigations on 571 prehistoric sites at Fort Hood, Bell and Coryell Counties, Texas. Archeological Resource Management Series, US Army, Fort Hood. Research report nr 31: 183201.
Ellis, GL, Goodfriend, GA, Abbott, JT, Hare, PE, von Endt, DW. 1996. Assessment of integrity and geochronology of archeological sites using amino acid racemization in land snail shells: examples from central Texas. Geo archaeology 11: 189213.
Evin, J, Marechal, J, Pachiaudi, C, Puissegur, JJ. 1980. Conditions involved in dating terrestrial shells. Radiocarbon 22(2):545–55.
Fullington, RW, Pratt, WL. 1974. The aquatic and land Mollusca of Texas. Part 3. Dallas Museum of Natural History Bulletin 1. Dallas: Dallas Natural Science Association. iv + 48 p.
Goodfriend, GA. 1987. Radiocarbon age anomalies in shell carbonate of land snails from semi-arid areas. Radiocarbon 29:159–67.
Goodfriend, GA, Hood, DG. 1983. Carbon isotope analysis of land snail shells: implications for carbon sources and radiocarbon dating. Radiocarbon 25: 810–30.
Goodfriend, GA, Stipp, JJ. 1983. Limestone and the problem of radiocarbon dating of land-snail shell carbonate. Geology 11:575–7.
Johnson, L. Life and death as seen at the Bessie Kruze Site (41WM13) on the Blackland Prairie of Williamson County, Texas. Texas Dept of Transportation and Texas Historical Commission, Austin, Texas. Forthcoming.
Pilsbry, HA. 1946. Land mollusca of North America (north of Mexico). Volume 2, Part 1. Monographs of the Academy of Natural Sciences of Philadelphia 3. Philadelphia: George W. Carpenter Fund. vii + 520 p.
Quigg, JM, et al. 1996 Early archaic use of the Concho River terraces: cultural resource investigations at 41TG307 and 41TG309 Tom Green County, San Angelo, Texas. Texas Department of Antiquities Technical Report no. 11058. Austin: TRC Mariah Associates.
Stafford, TW. 1993. AMS 14C dating in geoarchaeology: field and laboratory controls on absolute accuracy and precision. Abstracts with Programs, Geological Society of American 1993 Annual Meeting (Boston; October 1993): A187.
Stafford, TW, Hare, PE, Currie, L, Jull, AJT, Donahue, D. 1990. Accuracy of North American human skeleton ages. Quaternary Research 34:111–20.
Stuiver, M, Becker, B. 1993. High-precision decadal calibration of the radiocarbon time scale, AD 1950–6000 BC. Radiocarbon 35(1):35–65.
Toomey, RS, Stafford, TW. 1994 Paleoenvironmental and radiocarbon study of the deposits from Hall's Cave, Kerr County, Texas. Program and Abstracts, 65th Annual Meeting of the Texas Archeological Society (Lubbock, Texas; November 1994): 96.
US Environmental Data Service. 1969. Climatology of the United States. Nr 60-41.

Related content

Powered by UNSILO

Radiocarbon Age Anomalies in Land Snail Shells from Texas: Ontogenetic, Individual, and Geographic Patterns of Variation

  • Glenn A Goodfriend (a1), G Lain Ellis (a2) and L J Toolin (a3)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed.