Dating ice ages

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Most contemporary scientists thought that the Earth had been gradually cooling down since its birth as a molten globe. Early land bacteria? Mountain glaciers in otherwise unglaciated areas extend to lower elevations due to a lower snow line. However, by using the uranium-series dating method, we were able to improve our understanding of the chronology of Upper Palaeolithic cave art in northern Spain. The cold periods are called glacials ice covering and the warm periods are called interglacials. Infurther evidence was provided that changes in solar insolation provide the initial trigger for the earth to warm after an Ice Age, with secondary factors like increases in greenhouse gases accounting for the magnitude of the change.

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Some of these factors influence each other.

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Why an ice age occurs every 100,000 years: Climate and feedback effects explained

Elster [19] Cromer [14]? Cromer [17]. In our study, recently published in Sciencewe obtained 50 dates on calcites overlying art in 11 caves in Cantabria and Asturias. Journal Reference: This article is an extract from the full article published in World Archaeology Issue Late Ordovician Silurian.

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