Answer:
The rocks in Indiana are primarily from the Paleozoic Era. The Paleozoic Era is a geological time period that lasted from about 541 million years ago to about 252 million years ago. During this era, Indiana was covered by shallow seas and experienced a variety of geological events, including the deposition of sedimentary rocks such as limestone, shale, and sandstone. These rocks can be found throughout the state and are important for understanding Indiana's geological history.
Step-by-step explanation: