1. Block coals
  2. Cannel coal
  3. Chemical properties of coal
  4. Coal balls: preservers of organisms that lived in ancient swamps
  5. Coal gasification: a source of clean energy
  6. Coal liquefaction
  7. Composition of coal
  8. Distribution of coal in Indiana
  9. History of coal mining in Indiana
  10. Low-sulphur coal
  11. Methane in coal
  12. Methods of mining coal
  13. Peacock coal
  14. Physical properties of coal
  15. Surface-mined land in Indiana
  16. Underground Coal Mining in Indiana
  17. Microfossils of the Salem Limestone
  18. Salem Limestone - carving and sculpture
  19. Salem Limestone - milling
  20. Salem Limestone - its origin in the Salem Sea
  21. Salem Limestone - quarrying
  22. Salem Limestone - venerable veneer

  1. Acid rain: environmental problem of industrialization
  2. Atomic clocks measure geologic time
  3. Computers in geology
  4. Earth magnetism: a tool for subsurface studies
  5. Fluid inclusions: geologic thermometers
  6. Geologic field mapping: grassroots geology helps solve
    surface problems and find mineral deposits
  7. Geological Survey coring program
  8. Isotopes: tiny atoms tell stories eons old
  9. Microanalyses by electrons: the ultimate chemist
  10. Scanning electron microscope: geologists' big eye on the ultrasmall
  11. Well logs: the rock record on paper
  12. When white is right

  1. Anderson Falls
  2. Bear Creek Canyon and Portland Arch
  3. Bluespring Caverns: a unique system of Hoosier caves
  4. Bluffs of Beaver Bend: a scenic feature of Martin County
  5. Squire Boon Caverns: site of historic Boone's Mill
  6. Brown County State Park: land of scenic hills, ridges and valleys
  7. Cataract Falls
  8. Clifty Falls State Park
  9. Microanalyses by electrons: the ultimate alchemist
  10. Eyeless fish in Indiana caves
  11. Glacial lake flatwoods
  12. Hanging Rock: A relic of ancient seas
  13. Harrison Spring: One of the largest in the Midwest
  14. Hemlock Cliffs
  15. Indiana's region of Karst topography
  16. Kentland Dome: Geologic enigma
  17. Klintar: Ancient marine reefs of the Wabash Valley
  18. The Knobstone Encarpment: Scenic Hoosier landform
  19. Lost River: Ghost stream of southern Indiana
  20. Marengo Cave: One of Indiana's most beautiful caverns
  21. McCormick's Creek: Indiana's first state park
  22. Mineral waters and health resorts in Indiana
  23. The Ohio River Story - Part I
  24. The Ohio River Story - Part II
  25. The Ohio River Story - Part III
  26. The Ohio River Story - Part IV
  27. The Ohio River Story - Part V
  28. Oil from troubled waters?
  29. Pine Hills Nature Preserve and the Devil's Backbone
  30. Pokagon State Park: Ice age legacy
  31. Sand dunes of Southern Indiana
  32. Seven pillars of the Mississinewa: Scenic Hoosier landform
  33. Shades State Park: A missing part of the geologic story
  34. Spring Mill State Park
  35. Standing rocks: Ancient erosion remnants
  36. Turkey Run State Park: The power of erosion
  37. Turtle Rock (Pulpit Rock, Rostrum Rock)
  38. Versailles State Park
  39. Williamsport Falls (Dry Falls)
  40. Wyandotte Cave

  1. Bonneyville Mill: One of northern Indiana's historic gristmills
  2. Buhrstones: Grain grinders of pioneer mills
  3. Burton Tunnel: One of Indiana's longest railroad tunnels
  4. Greene County's railroad viaduct: Third largest in the world
  5. Indiana mineral wool helps save energy
  6. Indiana's glass sand industry
  7. Lime kilns: Relics of one of Indiana's historic mineral industries
  8. Natural cement: Pioneer Hoosier mineral industry
  9. New Harmony: 19th Century center of culture and science
  10. Old mill at Spring Mill State Park
  11. Pioneer brickmaking in Indiana
  12. Portland cement: Rediscovery of ancient Rome's hydraulic cement
  13. Tunnel Mill: One of Indiana's historic water mills
  14. Reuben Wells: Hoosier locomotive of distinction

Industrial Minerals
  1. Indianite: Hoosier rock with a past
  2. Legendary ore deposits of Indiana
  3. Lightweight aggregate
  4. Marl
  5. Natural molding sand: Historic Hoosier mineral resource
  6. The New Albany shale: Source of fuel for the future?
  7. Peat moss from the Ice Age lakes and swamps
  8. Sand and gravel: Gift of the Ice Age glaciers
  9. Underclay: A once-important Hoosier mineral resource
  10. Zinc: Potential Hoosier mineral resource

Oil and Gas
  1. Deep drilling: From salt to petroleum
  2. Early methods of transporting petroleum
  3. Indiana's first oil refinery
  4. Petroleum: Cable-tool drilling rigs
  5. Petroleum: Costs of drilling are high
  6. Petroleum: Drilling contractors
  7. Petroleum: The geologist and the geophysicist
  8. Petroleum: Marine or offshore drilling
  9. Petroleum: The pumping unit
  10. Petroleum: Refining
  11. Petroleum: Rotary drilling
  12. Petroleum: Transportation
  13. Rock "traps" produce petroleum
  14. "Shooting the well": An exciting event in early days
  15. The Trenton Field: Energy for the past - and future?
  16. Wildcat drilling: Once chance in twenty

  1. Brachiopods: Easy to find fossils
  2. Bryozoa: "Moss animals" of the sea
  3. Callixylon: 375-million-year-old wood
  4. Cephalopods: 500-million-year-old mollusks
  5. Collecting plant fossils in Indiana
  6. Conodonts: Micro fossils of distinction
  7. Corals: Reef builders in ancient and modern seas
  8. Crinoids: Ancient versus modern forms
  9. Crinoids: Living fossils of the sea
  10. Cystoids and blastoids: Primitive stalked marine animals
  11. Dinosaur fossils are not found in Indiana
  12. Eurypterids: Scorpions of the sea
  13. Fossils: Numbers on the pages of time
  14. Gastropods
  15. Ice Age mammals: What catastrophe overtook them?
  16. Indiana's fossil fusulinids
  17. Ostracods
  18. Ostracoderms: The first vertebrates
  19. Pelecypods
  20. Sea urchins: The echninoids
  21. Sharks: Monarchs of the ancient seas
  22. Sponges in Indiana rocks
  23. Spoonbill (polydon spathula): Primitive Hoosier fish
  24. The starfish family: Stelleroidea
  25. Trace fossils

  1. Willis S. Blatchley: Scholar, educator, naturalist
  2. Edward Travers Cox: Indiana State Geologist (1869-1879)
  3. Richard Owen: Distinguished Hoosier geologist, teacher, author and soldier
  4. Maurice Thomson: A talented Hoosier

Rocks and Minerals
  1. Glacial erratics: Marker rocks from distant places
  2. Heavy minerals can tell many stories
  3. Meteorites: Visitors from outer space
  4. Pyrite (Fool's Gold): An often-misunderstood iron-sulfide material
  5. Rockhounding in Indiana

Structural Geology
  1. Continental Drift
  2. Faults of Southwestern Indiana
  3. Geologic time
  4. Geology of damsites
  5. Geothermal energy
  6. The Precambrian basement in Indiana
  7. Volcanic ash in Indiana: Tioga and Bentonite

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