CGRG Bibliography of Canadian Geomorphology
Search Results

---

Author : Calmels, F.; Froese, D.G.; and Clavano, W.R.
Date : 2010.
Title : Dating recent permafrost disturbance and recovery with tritium and post-bomb radiocarbon isotopes.
Publication : GEO2010: 63rd Canadian Geotechnical Conference & 6th Canadian Permafrost Conference. September 12-16, 2010. Canadian Geotechnical Society: Richmond, B.C.
Issue :
Page(s) : 1533-1539.



---

Abstract

We test the use of tritium and post-bomb 14C from organic samples within permafrost aggradational ice to determine the timing of historic permafrost aggradation. Three of four samples lacked tritium, while testing positive for the presence of excess 14C (F14C). Calibration of these ages using CALIBomb, allows precise ages through comparison with post-bomb atmospheric 14C concentrations. The most likely age for three of four samples ranged from March 1956-May 1957 (2 sigma) and Sept 1955-Jan 1957 (2 sigma). A fourth sample did not include post-bomb 14C. 

---

Bibliography of Canadian Geomorphology