Evidence for just one Glaciation in Alberta
At first, the concept of the Ice Age was unthinkable, but scientists gradually accepted it because of the evidence. Then there were four. Uniformitarian scientists (who believe in slow and gradual processes over long periods of time) further expanded the number of ice ages.
They got cozy with the astronomical (Milankovitch) theory. This has been useful for proposing not only multiple ice ages, but for proponents of climate change as well. However, the Milankovitch theory is based on fundamentally-flawed concepts and has been refuted by creation science.
RGBStock / SP Veres |
For about 60 years, from about 1910 to 1970, it was claimed that there were four global ice ages, give or take one. This notion first arose with the recognition of four gravel layers in river valleys along the north slope of the Alps in Europe by Penck and Brückner in the late 1880s. These were correlated with the four ice ages believed to have occurred in America’s Midwest. This correlation thus established the ‘four ice ages’ paradigm, which was reinforced with locations from all over the world that consistently claimed four ice ages.It was once postulated that there were up to four glaciations in Alberta, based on deposits in river valleys and assuming the chronology in the US Midwest. Since the ice is believed to have propagated from the same source area, the Laurentide Ice Sheet centred over Hudson Bay, ice is believed to have covered all of Alberta about four separate times just as previously thought for the Midwest.