One of the many reasons Calcium Products has premium products is the extremely high-quality, pure limestone and gypsum we use. I thought it’d be interesting to share some of Iowa’s history that made our lime and gypsum so amazing. It also contributes to the rich Iowa farmland we hear lots about. Check out this article from IPTV about the land history. Below is an excerpt:
Iowa has been under water in one form or another for much of its history. Ancient seas covered Iowa while it was located near the equator. For millions of years, the continental plate on which Iowa sits has slowly wandered around the globe. At one time the plate split apart, creating a rift. Then it moved back together. Several other times, it crashed into other plates. These crashes caused parts of the land to get pushed up out of the water. These earth-quaking events often formed mountains. The oldest mountain remnants in Iowa are found as Sioux Quartzite in the northwest corner of the state. When the land was above water, waves and rain worked to wear away the rocks. When plates crashed together again, the land often got pushed back down. While underwater, the land became covered with layers of sediment. Each layer of sediment holds clues to the past. Some layers have fossil crinoids, trilobites or even tree pollen. Most of these layers are buried under newer rocks and soil. But the bluffs that line the Mississippi River in northeast Iowa are an exposed outcrop of ancient sea sediments.