Lab Report

Bedrock of Indiana

Lab Data Sheets

Record the age ranges for these geologic periods using the figure below from page 340 of your textbook. The first geologic period is done for you.

Pennsylvanian: from 299 to 318 mya (million years ago)

Mississippian: from 318 to 359 mya

Devonian: from 359 to 416 mya

Silurian: from 416 to 444 mya

Ordovician: from 444 to 488 mya

You have found the ages of bedrock in Indiana! They are hundreds of millions of years old! How are these dates determined? You will learn about dating methods in Chapter 11.

Comparing these ages to the map, in what part of the state is the youngest bedrock? Circle one:

Northwest

Northeast

Southwest

Southeast

(1) Ivy Tech Southwest: 3501 North First Avenue Evansville, IN 47710

System: Pennsylvanian

Age of System (from the list you have already created) 299-318 mya

Rock Units: Patoka and Shelburn Formations

Rock type: Mostly shale and sandstone; also includes thin beds of limestone and coal.

Thickness of Unconsolidated Material, in feet:

Minimum thickness: 50 ft

Maximum thickness: 100 ft

(2) Ivy Tech Bloomington: 200 Daniels Way Bloomington, IN 47404

System: Mississippian

Age of System (from the list you have already created) 318-359 mya

Rock Units: Blue River Group

Rock type: Mostly micritic, skeletal, and oolitic limestone.

Thickness of Unconsolidated Material, in feet:

Minimum thickness: 0 ft

Maximum thickness: 50 ft

(3) Ivy Tech North Meridian Campus: 50 West Fall Creek Parkway North Drive, Indianapolis, IN 46208

System: Devonian

Age of System (from the list you have already created) 359-416 mya

Rock Units: Muscatatuck Group

Rock type: Dolomite and limestone.

Thickness of Unconsolidated Material, in feet:

Minimum thickness: 50 ft...