By: Barbara Meyer Bistodeau 01/01/2015
There are many different theories about how things began. One author says our globe originally was a mass of molten granite which cooled in a slow process, and through the ages became a rough, ragged mass. Abrasion and erosion ground the surface into powder, oceans swept over it, chemical changes operated on it. Next, the sand rock of the Twin Cities area was laid down, followed by the so-called Trenton Limestone of the upper Mississippi Valley. The age of reptiles came on and huge monsters wallowed in the muddy water which, in time, hardened into building stone.