Geology – Glacial age

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Pinatubo in the Philippines erupted in 1991 the vast amounts Volcanic gas actually caused world wide temperatures to drop if only by a small degree However , this theory is countered by the fact that large number of volcanoes simply do not erupt in unison and there is little evidence of large numbers of volcanoes erupting simultaneously Snowball Earth There is also the Snowball Earth hypothesis which maintains that the severe freezing in the late Proterozoic was ended by an increase in CO2 levels in the atmosphere

However it is hard to determine what caused the greenhouse gas levels to drop in the first place Position of the Earth ‘s orbit This theory is perhaps the most plausible

Given how sensitive the Earth ‘s biosphere is even just a small change in the earth ‘s orbit an cause global temperatures to drop dramatically

It can be seen in current times , rising CO2 and other greenhouse gas levels are in fact , causing the Earth ‘s temperature to rise

Paper Topic: Geology – Glacial age Ice Age Vulcanism One theory is the large amount of Volcanic activity can cause an Ice age

This theory is supported by evidence that the orbits of other planets are not consistent

This theory proposes that changes in the earth ‘s Atmosphere cause the ice age to occur

The main con is that based on these orbital fluctuation cycles , the Earth should be in ice age right now

The Earth is not orbiting the Sun in a perfectly ly circle

Conversely the drop in Greenhouse gasses in the atmosphere was what began the Ice age

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