My volcanic theory rejected

Tectonics in the tropics trigger Earth’s ice ages [Science Daily]. “Each of the last three major ice ages were preceded by tropical ‘arc-continent collisions’ — tectonic pileups that occurred near the Earth’s equator, in which oceanic plates rode up over continental plates, exposing tens of thousands of kilometers of oceanic rock to a tropical environment. …[T]he heat and humidity of the tropics likely triggered a chemical reaction between the rocks and the atmosphere. Specifically, the rocks’ calcium and magnesium reacted with atmospheric carbon dioxide, pulling the gas out of the atmosphere and permanently sequestering it in the form of carbonates such as limestone. Over time… this weathering process, occurring over millions of square kilometers, could pull enough carbon dioxide out of the atmosphere to cool temperatures globally and ultimately set off an ice age. ‘We think that arc-continent collisions at low latitudes are the trigger for global cooling,’ says Oliver Jagoutz, an associate professor in MIT’s Department of Earth, Atmospheric, and Planetary Sciences. ‘This could occur over 1-5 million square kilometers, which sounds like a lot. But in reality, it’s a very thin strip of Earth, sitting in the right location, that can change the global climate.'” • Fascinating! No way to speed it up, I suppose…

These authors claim a direct connection between tectonic plates and CO2 reduction, restarting the glacial cycle.  No need for volcanoes.  I also was suspect because their should have been dust residual in the ice cores via my theory.

But there is hope, we need only a relatively small CO2 filter if we learn how to make one.