The The

The conundrum of the Saturday morning.  The free time stretches out ahead of me.  How should I spend the free time?  We're talking about the possible hike and the likely picnic.  But what do we predict about the destination?  The Cedar Bluffs hike has the patches of the wildflowers this time of the year.  The new peninsula hike has the great views of the lake and sometimes the eagles appear.  There's the hike in McCormick's Creek where you can check out the remnants of the Old State House quarry.  That last one might be the ticket because we are presently studying the Indiana limestone with The Thirdlanders.  Did you know that if you drop the chunk of the limestone into the beaker of the vinegar it will start the fizzing?  That's because it has the calcium carbonate.  I will now share the interesting facts about the limestone from the WIKIPEDIA.

Limestone is a sedimentary rock, composed mainly of skeletal fragments of marine organisms such as coral, forams and molluscs. Its major materials are the minerals calcite and aragonite, which are different crystal forms of calcium carbonate(CaCO₃).

About 10% of sedimentary rocks are limestones. The solubility of limestone in water and weak acid solutions leads to karst landscapes, in which water erodes the limestone over thousands to millions of years. Most cave systems are through limestone bedrock.