A New Approach to the Dating of Glacial Moraines: Testing the Reliability of C-14 Dating Remains of the Aeolian Biome in Till Matrix

9314927多恩美国西南部冰碛的试验结果表明，从冰碛基质中提取的弥散有机物的常规放射性碳测量可以获得14 C年龄。 根据冰碛物形态、地貌地层位置、土壤和风化特征，先前被绘制为“晚期威斯康星”的两个冰碛物产生了属于海洋氧同位素年代学“2号状态”的常规放射性碳年龄。 其中一个被绘制成“早期威斯康星州”，产生了无限的14 C年龄可以迅速扩大。 这有潜在的危险，因为有许多令人困惑的因素可能会产生误导性的年龄。 本提案的目的是通过在具有独立年龄控制的研究中心对样品进行采样，评估该方法是否受混杂因素的影响。

9314927 Dorn Pilot results from glacial moraines in the southwestern United States demonstrate that it is possible to obtain 14C ages from conventional radiocarbon measurements on disseminated organic extracted from the matrix of moraines. Two moraines that were previously mapped as 'late Wisconsin', based on moraine morphology, morphostratigraphic positioin, soils and weathering characteristics, yielded conventional radiocarbon ages that fall within 'state 2' of the marine oxygen isotope chronology. One mapped as 'early Wisconsin' yielded an infinite 14C ages could expand rapidly. this is potentially dangerous, because there are a number of confounding factors that could produce misleading ages. The objective of this proposal is to assess if this method is subject to confounding factors, by sampling tills at sites with independent age control.