Comment On: 'impact Of The 1960 Major Subduction Earthquake In Northern Patagonia (chile, Argentina)' Quartenary Int

摘要

The correlation of Cs-137 specific activity profiles with the historical fallout sequence is essential in sediment cores dating using this technique. The work referenced (Chapron et al., 2006) studies sedimentary sequences dated by different techniques, including the measurement of Cs-137 specific activity profiles. When evaluating the Cs-137 profiles, the authors state that 'The peak in Cs-137 activity between 5 and 6 cm in PU-1-P4 is interpreted as resulting from the AD 1965 culminating impact of atmospheric nuclear tests in the southern hemisphere'. It is well known that France performed nuclear tests in the Southern Hemisphere between 1966 and 1974. It is also demonstrated that fission products from these tests reached South America, particularly Patagonia.