Transgressive deposits of the mid-Wisconsin interstadial from 33o to 40o south latitude, Argentine Republic: reliability of 14C ages

摘要: An analysis concerning to the reliability of several 14 C ag es ranging from 25,700 ± 650 BP 38,500 3000 BP, obtained raised estuarine and marine deposits found between 33° 40° South Latitude is presented. Possible biogenic carbonate contamination by ground water, edaphic development, or crystalline transformation aragonite calcite in shell carbonates, analyzed each dated sample. Also considered are laboratory methodological errors instrumental limitations. Preliminary magnetostratigraphic results appear support these date s, as do various paleoclimatic paleomagnetic considerations with a possible cause/effect relationship.