How do scientists explain the cause of the Ice Age(s)?

Lol, Jar. Your alleged genetic silver bullet (quote below from flood thread) doesn't shoot down the flood. You people who continually deny the possibility of the flood consistently fail to factor in the implications of a Biblical pre-flood planet and atmosphere relative to radiometric dating metholody.

This YEC creationist says the ice ages should more accurately be seen as a freezing rain age.
I see this age as coming about the years 2100 BC to 1900 BC and lasting till about 1700 BC or so.
i speculate there was a great upheaval some centuries after the flood , these dates, and part of it was a great volcanic outporing up and down the spine of North/South America and elsewhere.
This changed the climate, like a nuclear winter, and brought about the cool and rainy climate that we now call the ice age.
I believe ice cores and the general ice depth in northern parts was rather quickly done by endless rain cycles as opposed to annual snow cycles.
So there was not a movement from migrating ice but simply frozen water covering everywhere.
Then the ice melted rapidly in great floods and all was over and nothing happened since.
Its just been wrong interpretations about basic facts and processes from those not first accepting biblical boundaries.

When ever it came in the BC it still was a excavation of the land that created the Med sea. Before it was dry land which allowed rapid animal migration. in fact they find concentrations of creatures, post flood, killed and collected in some islands showing they were overthrown by this event.