Global warming a cycle of global cooling is the Planet going to have another Ice Age?

What did cause the last Ice Age? How did large amount of water from the Oceans condense and freeze to create Glaciers. My theory is that the oceans metal content contained a large amounts of metals like nickel and Chromium that becomes hot because of their resistant to the suns Energy. The oceans did not freeze like is does now. The condensation froze creating Glaciers. The Earth is like a bit distiller, petroleum refinery, or alcohol distiller. All volcanic gases containing metal gases that have never been burned like gold, copper and zinc are conductors of electricity and are magnetic. That would create a cold atmosphere Is there a reason why there is no theory's for the cause or the last Ice Age? Is there scientific research with the metal ges that the planet produces affects on the Atmosphere or on the Oceans waters. Movie "2012". Currency Inflation is good and the deflation is bad. A country can create a new currency with an exchange rate. A new penny for an old dollar. It was a past question sorry.