Within the ice cores from Greenland and Antarctica is much volcanic ash from igneous belching while the Ice Age proceeded, that volcanism in the aftermath of Noah’s Flood when global tectonic upheaval slowly subsided during the centuries following, during the Ice Age, and that volcanic ash helped make the summers cooler and the winters warmer for maximized snowfall and accumulation, but actually only about half as much average depth as popularly stated by the uniformitarians.
