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Our Hoosier State Beneath Us

Short informational pages on a variety of Indiana geology topics, resources, local history, and related subjects for distribution to Indiana newspapers. Created by Indiana Geological Survey staff between 1973 and April 1984.

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The Salem Limestone: "The Nations Building Stone" - Our Hoosier State Beneath Us
The Salem Limestone: "The...  
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Whetstones - Our Hoosier State Beneath Us
Whetstones - Our Hoosier...  
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Geodes: One of Natures Mystery - Our Hoosier State Beneath Us
Geodes: One of Nature's...  
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Gold and Diamonds in Indiana - Our Hoosier State Beneath Us
Gold and Diamonds in...  
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Indianas Buried Valleys - Our Hoosier State Beneath Us
Indiana's Buried Valleys -...  
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Limestone: Indianas State Stone - Our Hoosier State Beneath Us
Limestone: Indiana's State...  
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Volcanic Ash in Indiana - Our Hoosier State Beneath Us
Volcanic Ash in Indiana -...  
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Earthquakes in Indiana - Our Hoosier State Beneath Us
Earthquakes in Indiana -...  
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36,000 Cubic Miles of Indianas Mineral Producing Rocks - Our Hoosier State Beneath Us
36, 000 Cubic Miles of Indi...  
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A Library for Rock Cuttings and Cores - Our Hoosier State Beneath Us
A Library for Rock...  
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Coal Mine Wastes: Potential Source of Energy - Our Hoosier State Beneath Us
Coal Mine Wastes:...  
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Geological Survey Studies Deep Coal Deposits - Our Hoosier State Beneath Us
Geological Survey Studies...  
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Paper Coal: Curious Relic of the Coal Age - Our Hoosier State Beneath Us
Paper Coal: Curious Relic...  
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Sulfur in Indiana Coal - Our Hoosier State Beneath Us
Sulfur in Indiana Coal -...  
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Use of Coal in Hoosierland - Our Hoosier State Beneath Us
Use of Coal in Hoosierland...  
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Salem Limestone - Uses - Our Hoosier State Beneath Us
Salem Limestone - Uses -...  
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Geochemical Exploration Provides Clues to Hidden Mineral Deposits - Our Hoosier State Beneath Us
Geochemical Exploration...  
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ICP-AES: Push Button Chemical Analysis - Our Hoosier State Beneath Us
ICP-AES: Push Button...  
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Radiocarbon Dating Determines the Age of Ancient Life - Our Hoosier State Beneath Us
Radiocarbon Dating...  
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The Indiana Dunes: Relics of the Ice Age - Our Hoosier State Beneath Us
The Indiana Dunes: Relics...  
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Indiana During the Great Ice Age - Our Hoosier State Beneath Us
Indiana During the Great...  
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Indianas Landscape 300 Million Years Ago - Our Hoosier State Beneath Us
Indiana's Landscape 300...  
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Indianas Pioneer Crushed Stone Quarries - Our Hoosier State Beneath Us
Indiana's Pioneer Crushed...  
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Loess: Product of Ice Ages Winds - Our Hoosier State Beneath Us
Loess: Product of Ice Ages...  
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Moraines: Relics of Ice Age Glaciers - Our Hoosier State Beneath Us
Moraines: Relics of Ice...  
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The Mysterious Force of Gravity - Our Hoosier State Beneath Us
The Mysterious Force of...  
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Squire Boone Caverns: Site of Historic Boones Mill - Our Hoosier State Beneath Us
Squire Boone Caverns: Site...  
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Underground Wonders of Indiana - Our Hoosier State Beneath Us
Underground Wonders of...  
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Indianas Pipelines - Our Hoosier State Beneath Us
Indiana's Pipelines - Our...  
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Pioneer Ironworks - Our Hoosier State Beneath Us
Pioneer Ironworks - Our...  
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Pit and Quarry Reclamation in Indiana - Our Hoosier State Beneath Us
Pit and Quarry Reclamation...  
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Solar Energy: Potential Bonanza for Man - Our Hoosier State Beneath Us
Solar Energy: Potential...  
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Brickmaking: One of Mankinds Oldest Industries - Our Hoosier State Beneath Us
Brickmaking: One of...  
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Glass Manufacturing: Product of Indianas First Gas Boom - Our Hoosier State Beneath Us
Glass Manufacturing:...  
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Cement Manufacturing: A Major Hoosier Mineral Industry - Our Hoosier State Beneath Us
Cement Manufacturing: A...  
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Gypsum: Versatile Hoosier Mineral - Our Hoosier State Beneath Us
Gypsum: Versatile Hoosier...  
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Indianas Reef Rocks - Our Hoosier State Beneath Us
Indiana's Reef Rocks -...  
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Melting Glaciers Deposited Our Sands and Gravels - Our Hoosier State Beneath Us
Melting Glaciers Deposited...  
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Indianas Recent "Mini" Oil Boom - Our Hoosier State Beneath Us
Indiana's Recent "Mini"...  
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Petroleum: Operating Companies - Our Hoosier State Beneath Us
Petroleum: Operating...  
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Indianas Ancient Elephants - Our Hoosier State Beneath Us
Indiana's Ancient...  
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David Dale Owen: Pioneer Hoosier Naturalist - Our Hoosier State Beneath Us
David Dale Owen: Pioneer...  
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Water Witching - Our Hoosier State Beneath Us
Water Witching - Our...  
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The Trenton Field: Scene of Indianas First Big Boom - Our Hoosier State Beneath Us
The Trenton Field: Scene...  
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The Falls of the Ohio - Our Hoosier State Beneath Us
The Falls of the Ohio -...  
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Coal : Historic Hoosier Mineral Industry - Our Hoosier State Beneath Us
Coal : Historic Hoosier...  
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Alphabetical listing of titles from the series titled "Our Hoosier State Beneath Us"
Alphabetical listing of...  
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"Our Hoosier State Beneath Us" compilation
"Our Hoosier State Beneath...  
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The Precambrian Basement in Indiana - Our Hoosier State Beneath Us
The Precambrian Basement...  
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Geothermal Energy - Our Hoosier State Beneath Us
Geothermal Energy - Our...  
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Geology of Damsites - Our Hoosier State Beneath Us
Geology of Damsites - Our...  
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Geologic Time - Our Hoosier State Beneath Us
Geologic Time - Our...  
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Faults of Southwestern Indiana - Our Hoosier State Beneath Us
Faults of Southwestern...  
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Continental Drift - Our Hoosier State Beneath Us
Continental Drift - Our...  
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Rockhounding in Indiana - Our Hoosier State Beneath Us
Rockhounding in Indiana -...  
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Pyrite (Fools Gold): An Often-Misunderstood Iron-Sulfide Mineral - Our Hoosier State Beneath Us
Pyrite (Fool's Gold): An...  
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Meteorites: Visitors from Outer Space - Our Hoosier State Beneath Us
Meteorites: Visitors from...  
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Heavy Minerals can Tell many Stories - Our Hoosier State Beneath Us
Heavy Minerals can Tell...  
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Glacial Erratics: Marker Rocks from Distant Places - Our Hoosier State Beneath Us
Glacial Erratics: Marker...  
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Maurice Thompson: A Talented Hoosier - Our Hoosier State Beneath Us
Maurice Thompson: A...  
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Richard Owen: Distinguished Hoosier Geologist, Teacher, Author, and Soldier - Our Hoosier State Beneath Us
Richard Owen:...  
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Edward Travers Cox: Indiana State Geologist (1869-79) - Our Hoosier State Beneath Us
Edward Travers Cox:...  
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Willis S. Blatchley: Scholar, Educator, Naturalist - Our Hoosier State Beneath Us
Willis S. Blatchley:...  
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Crinoids: Living Fossils of the Sea - Our Hoosier State Beneath Us
Crinoids: Living Fossils...  
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Crinoids: Ancient Versus Modern Forms - Our Hoosier State Beneath Us
Crinoids: Ancient Versus...  
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Corals: Reef Builders in Ancient and Modern Seas - Our Hoosier State Beneath Us
Corals: Reef Builders in...  
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Conodonts: Microfossils of Distinction - Our Hoosier State Beneath Us
Conodonts: Microfossils of...  
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Collecting Plant Fossils in Indiana - Our Hoosier State Beneath Us
Collecting Plant Fossils...  
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Cephalopods: 500-Million-Year-Old Mollusks - Our Hoosier State Beneath Us
Cephalopods:...  
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Callixylon: 375-Million-Year-Old Wood - Our Hoosier State Beneath Us
Callixylon:...  
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Trace Fossils - Our Hoosier State Beneath Us
Trace Fossils - Our...  
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The Starfish Family: Stelleroidea - Our Hoosier State Beneath Us
The Starfish Family:...  
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Spoonbill (Polydon spathula): Primitive Hoosier Fish - Our Hoosier State Beneath Us
Spoonbill (Polydon...  
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Sponges in Indiana Rocks - Our Hoosier State Beneath Us
Sponges in Indiana Rocks -...  
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Sharks: Monarchs of Ancient Seas - Our Hoosier State Beneath Us
Sharks: Monarchs of...  
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Sea Urchins: The Echinoids - Our Hoosier State Beneath Us
Sea Urchins: The Echinoids...  
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Bryozoa: "Moss Animals" of the Sea - Our Hoosier State Beneath Us
Bryozoa: "Moss Animals" of...  
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Pelecypods - Our Hoosier State Beneath Us
Pelecypods - Our Hoosier...  
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Ostracoderms: The First Vertebrates - Our Hoosier State Beneath Us
Ostracoderms: The First...  
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Ostracods - Our Hoosier State Beneath Us
Ostracods - Our Hoosier...  
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Indianas Fossil Fusulinids - Our Hoosier State Beneath Us
Indiana's Fossil...  
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Ice Age Mammals: What Catastrophe Overtook Them? - Our Hoosier State Beneath Us
Ice Age Mammals: What...  
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Gastropods - Our Hoosier State Beneath Us
Gastropods - Our Hoosier...  
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Fossils: Numbers on the Pages of Time - Our Hoosier State Beneath Us
Fossils: Numbers on the...  
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Eurypterids: Scorpions of the Sea - Our Hoosier State Beneath Us
Eurypterids: Scorpions of...  
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Dinosaur Fossils are Not Found in Indiana - Our Hoosier State Beneath Us
Dinosaur Fossils are Not...  
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Cystoids and Blastoids: Primitive Stalked Marine Animals - Our Hoosier State Beneath Us
Cystoids and Blastoids:...  
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Brachiopods: Easy to Find Fossils - Our Hoosier State Beneath Us
Brachiopods: Easy to Find...  
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Petroleum: The Pumping Unit - Our Hoosier State Beneath Us
Petroleum: The Pumping...  
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Petroleum: Marine or Offshore Drilling - Our Hoosier State Beneath Us
Petroleum: Marine or...  
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Petroleum: The Geologist and the Geophysicist - Our Hoosier State Beneath Us
Petroleum: The Geologist...  
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Petroleum: Drilling Contractors - Our Hoosier State Beneath Us
Petroleum: Drilling...  
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Petroleum: Costs of Drilling are High - Our Hoosier State Beneath Us
Petroleum: Costs of...  
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Petroleum: Cable-Tool Drilling Rigs - Our Hoosier State Beneath Us
Petroleum: Cable-Tool...  
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Indianas First Oil Refinery - Our Hoosier State Beneath Us
Indiana's First Oil...  
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Early Methods of Transporting Petroleum - Our Hoosier State Beneath Us
Early Methods of...  
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Wildcat Drilling: One Chance in Twenty - Our Hoosier State Beneath Us
Wildcat Drilling: One...  
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The Trenton Field: Energy for the Past - and Future? - Our Hoosier State Beneath Us
The Trenton Field: Energy...  
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Shooting the Well: An Exciting Event in the Early Days - Our Hoosier State Beneath Us
Shooting the Well: An...  
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Rock "Traps" Produce Petroleum - Our Hoosier State Beneath Us
Rock "Traps" Produce...  
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Petroleum: Transportation - Our Hoosier State Beneath Us
Petroleum: Transportation...  
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Petroleum: Rotary Drilling - Our Hoosier State Beneath Us
Petroleum: Rotary Drilling...  
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Petroleum: Refining - Our Hoosier State Beneath Us
Petroleum: Refining - Our...  
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Deep Drilling: From Salt to Petroleum - Our Hoosier State Beneath Us
Deep Drilling: From Salt...  
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Underclay: A Once-Important Hoosier Mineral Resource - Our Hoosier State Beneath Us
Underclay: A...  
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Sand and Gravel: Gift of the Ice Age Glaciers - Our Hoosier State Beneath Us
Sand and Gravel: Gift of...  
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Peat Moss from Ice Age Lakes and Swamps - Our Hoosier State Beneath Us
Peat Moss from Ice Age...  
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The New Albany Shale: Source of Fuel for the Future? - Our Hoosier State Beneath Us
The New Albany Shale:...  
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Natural Molding Sand: Historic Hoosier Mineral Resource - Our Hoosier State Beneath Us
Natural Molding Sand:...  
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Marl - Our Hoosier State Beneath Us
Marl - Our Hoosier State...  
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Lightweight Aggregate - Our Hoosier State Beneath Us
Lightweight Aggregate -...  
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Legendary Ore Deposits of Indiana - Our Hoosier State Beneath Us
Legendary Ore Deposits of...  
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Zinc: Potential Hoosier Mineral Resource - Our Hoosier State Beneath Us
Zinc: Potential Hoosier...  
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Indianite: Hoosier Rock with a Past - Our Hoosier State Beneath Us
Indianite: Hoosier Rock...  
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New Harmony: 19th Century Center of Culture and Science - Our Hoosier State Beneath Us
New Harmony: 19th Century...  
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Natural Cement: Pioneer Hoosier Mineral Industry - Our Hoosier State Beneath Us
Natural Cement: Pioneer...  
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Lime Kilns: Relics of One of Indianas Historic Mineral Industries - Our Hoosier State Beneath Us
Lime Kilns: Relics of One...  
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Indiana Mineral Wool Helps save Energy - Our Hoosier State Beneath Us
Indiana Mineral Wool Helps...  
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Indianas Glass-Sand Industry - Our Hoosier State Beneath Us
Indiana's Glass-Sand...  
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Greene Countys Railroad Viaduct: Third Largest in the World - Our Hoosier State Beneath Us
Greene County's Railroad...  
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Burton Tunnel: One of Indianas Longest Railroad Tunnels - Our Hoosier State Beneath Us
Burton Tunnel: One of...  
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Buhrstones: Grain Grinders of Pioneer Mills - Our Hoosier State Beneath Us
Buhrstones: Grain Grinders...  
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Reuben Wells: Hoosier Locomotive of Distinction - Our Hoosier State Beneath Us
Reuben Wells: Hoosier...  
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Tunnel Mill: One of Indianas Historic Water Mills - Our Hoosier State Beneath Us
Tunnel Mill: One of...  
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Portland Cement: Rediscovery of Ancient Romes Hydraulic Cement - Our Hoosier State Beneath Us
Portland Cement:...  
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Pioneer Brickmaking in Indiana - Our Hoosier State Beneath Us
Pioneer Brickmaking in...  
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Old Mill at Spring Mill State Park - Our Hoosier State Beneath Us
Old Mill at Spring Mill...  
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Bonneyville Mill: One of Northern Indianas Historic Gristmills - Our Hoosier State Beneath Us
Bonneyville Mill: One of...  
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Eagle Creek Reservoir: Solution to an Environmental Problem - Our Hoosier State Beneath Us
Eagle Creek Reservoir:...  
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Clifty Falls State Park - Our Hoosier State Beneath Us
Clifty Falls State Park ...  
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Cataract Falls - Our Hoosier State Beneath Us
Cataract Falls - Our...  
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Brown County State Park: Land of Scenic Hills, Ridges, and Valleys - Our Hoosier State Beneath Us
Brown County State Park:...  
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Wyandotte Cave - Our Hoosier State Beneath Us
Wyandotte Cave - Our...  
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Bluffs of Beaver Bend: A Scenic Feature of Martin County - Our Hoosier State Beneath Us
Bluffs of Beaver Bend: A...  
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Williamsport Falls (Dry Falls) - Our Hoosier State Beneath Us
Williamsport Falls (Dry...  
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Versailles State Park - Our Hoosier State Beneath Us
Versailles State Park -...  
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Turtle Rock (Pulpit Rock, Rostrum Rock) - Our Hoosier State Beneath Us
Turtle Rock (Pulpit Rock...  
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Turkey Run State Park: The Power of Erosion - Our Hoosier State Beneath Us
Turkey Run State Park: The...  
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Standing Rocks: Ancient Erosion Remnants - Our Hoosier State Beneath Us
Standing Rocks: Ancient...  
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Spring Mill State Park - Our Hoosier State Beneath Us
Spring Mill State Park -...  
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Shades State Park: A Missing Part of the Geologic Story - Our Hoosier State Beneath Us
Shades State Park: A...  
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Seven Pillars of the Mississinewa: Scenic Hoosier Landform - Our Hoosier State Beneath Us
Seven Pillars of the...  
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Sand Dunes of Southern Indiana - Our Hoosier State Beneath Us
Sand Dunes of Southern...  
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Pokagon State Park: Ice Age Legacy - Our Hoosier State Beneath Us
Pokagon State Park: Ice...  
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Bluespring Caverns: A Unique System of Hoosier Caves - Our Hoosier State Beneath Us
Bluespring Caverns: A...  
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Pine Hills Nature Preserve and the Devils Backbone - Our Hoosier State Beneath Us
Pine Hills Nature Preserve...  
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Oil from Troubled Waters? - Our Hoosier State Beneath Us
Oil from Troubled Waters?...  
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The Ohio River Story - Part V - Our Hoosier State Beneath Us
The Ohio River Story -...  
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The Ohio River Story - Part IV - Our Hoosier State Beneath Us
The Ohio River Story -...  
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The Ohio River Story - Part III - Our Hoosier State Beneath Us
The Ohio River Story -...  
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The Ohio River Story - Part II - Our Hoosier State Beneath Us
The Ohio River Story -...  
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The Ohio River story - Part I - Our Hoosier State Beneath Us
The Ohio River story -...  
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Mineral Waters and Health Resorts in Indiana - Our Hoosier State Beneath Us
Mineral Waters and Health...  
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McCormicks Creek: Indianas First State Park - Our Hoosier State Beneath Us
McCormick's Creek:...  
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Marengo Cave: One of Indianas Most Beautiful Caverns - Our Hoosier State Beneath Us
Marengo Cave: One of...  
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Bear Creek Canyon and Portland Arch - Our Hoosier State Beneath Us
Bear Creek Canyon and...  
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Lost River: Ghost Stream of Southern Indiana - Our Hoosier State Beneath Us
Lost River: Ghost Stream...  
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The Knobstone Escarpment: Scenic Hoosier Landform - Our Hoosier State Beneath Us
The Knobstone Escarpment:...  
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Klintar: Ancient Marine Reefs of the Wabash Valley - Our Hoosier State Beneath Us
Klintar: Ancient Marine...  
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Kentland Dome: Geologic Enigma - Our Hoosier State Beneath Us
Kentland Dome: Geologic...  
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Indianas Region of Karst Topography - Our Hoosier State Beneath Us
Indiana's Region of Karst...  
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Hemlock Cliffs - Our Hoosier State Beneath Us
Hemlock Cliffs - Our...  
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Harrison Spring: One of the Largest in the Midwest - Our Hoosier State Beneath Us
Harrison Spring: One of...  
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Hanging Rock: A Relic of Ancient Seas - Our Hoosier State Beneath Us
Hanging Rock: A Relic of...  
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Glacial Lake Flatwoods - Our Hoosier State Beneath Us
Glacial Lake Flatwoods -...  
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Eyeless Fish in Indiana Caves - Our Hoosier State Beneath Us
Eyeless Fish in Indiana...  
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Anderson Falls - Our Hoosier State Beneath Us
Anderson Falls - Our...  
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Microanalyses by Electrons: The Ultimate Alchemist - Our Hoosier State Beneath Us
Microanalyses by...  
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Isotopes: Tiny Atoms Tell Stories Eons Old - Our Hoosier State Beneath Us
Isotopes: Tiny Atoms Tell...  
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Geological Survey Coring Program - Our Hoosier State Beneath Us
Geological Survey Coring...  
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Geologic Field Mapping: Grassroots Geology Helps Solve Surface Problems and Find Mineral Deposits - Our Hoosier State Beneath Us
Geologic Field Mapping:...  
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Fluid Inclusions: Geologic Thermometers - Our Hoosier State Beneath Us
Fluid Inclusions: Geologic...  
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Earth Magnetism: A Tool for Subsurface Studies - Our Hoosier State Beneath Us
Earth Magnetism: A Tool...  
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Computers in Geology - Our Hoosier State Beneath Us
Computers in Geology -...  
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Atomic Clocks Measure Geologic Time - Our Hoosier State Beneath Us
Atomic Clocks Measure...  
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When White is Right - Our Hoosier State Beneath Us
When White is Right - Our...  
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Well Logs: The Rock Record on Paper - Our Hoosier State Beneath Us
Well Logs: The Rock Record...  
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Scanning Electron Microscope: Geologists Big Eye on the Ultrasmall - Our Hoosier State Beneath Us
Scanning Electron...  
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Acid Rain: Environmental Problem of Industrialization - Our Hoosier State Beneath Us
Acid Rain: Environmental...  
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Salem Limestone - Venerable Veneer - Our Hoosier State Beneath Us
Salem Limestone -...  
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Salem Limestone - Quarrying - HSBU DS-5 - Our Hoosier State Beneath Us
Salem Limestone -...  
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Salem Limestone - Its Origin in the Salem Sea - Our Hoosier State Beneath Us
Salem Limestone - Its...  
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Salem Limestone - Milling - Our Hoosier State Beneath Us
Salem Limestone - Milling...  
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Salem Limestone - Carving and Sculpture - Our Hoosier State Beneath Us
Salem Limestone - Carving...  
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Microfossils of the Salem Limestone - Our Hoosier State Beneath Us
Microfossils of the Salem...  
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History of Coal Mining in Indiana - Our Hoosier State Beneath Us
History of Coal Mining in...  
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Distribution of Coal in Indiana - Our Hoosier State Beneath Us
Distribution of Coal in...  
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Composition of Coal - Our Hoosier State Beneath Us
Composition of Coal - Our...  
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Coal Liquefaction - Our Hoosier State Beneath Us
Coal Liquefaction - Our...  
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Coal Gasification: A Source of Clean Energy - Our Hoosier State Beneath Us
Coal Gasification: A...  
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Coal Balls: Preservers of Organisms that Lived in Ancient Swamps - Our Hoosier State Beneath Us
Coal Balls: Preservers of...  
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Chemical Properties of Coal - Our Hoosier State Beneath Us
Chemical Properties of...  
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Cannel Coal - Our Hoosier State Beneath Us
Cannel Coal - Our Hoosier...  
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Underground Coal Mining in Indiana - Our Hoosier State Beneath Us
Underground Coal Mining in...  
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Surface-Mined Land in Indiana - Our Hoosier State Beneath Us
Surface-Mined Land in...  
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Physical Properties of Coal - Our Hoosier State Beneath Us
Physical Properties of...  
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Peacock Coal - Our Hoosier State Beneath Us
Peacock Coal - Our Hoosier...  
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Methods of Mining Coal - Our Hoosier State Beneath Us
Methods of Mining Coal -...  
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Methane in Coal - Our Hoosier State Beneath Us
Methane in Coal - Our...  
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Low-Sulphur Coal - Our Hoosier State Beneath Us
Low-Sulphur Coal - Our...  
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Block Coals - Our Hoosier State Beneath Us
Block Coals - Our Hoosier...