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| Acknowledgments | |
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| Introduction | |
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| Understanding the Earth | |
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| Plate Tectonics | |
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| Rocks | |
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| Geologic Time | |
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| Geologic History of Maryland, Delaware, and Washington, D.C | |
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| Ancient Cratons, Grenville Mountains, Rifting, and Offshore Deposition | |
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| Taconic Mountain Building Event and the Queenston Wedge | |
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| Acadian Mountain Building Event and the Catskill Wedge | |
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| Alleghanian Mountain Building Event | |
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| The Rifting of Pangea and Triassic Basins | |
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| Erosion of the Appalachians and the Building of the Coastal Plain | |
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| Pleistocene Ice Ages | |
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| Allegheny Plateau | |
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| Road Guides | |
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| Interstate 68 and US 40 Alternate: La Vale-West Virginia Border | |
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| US 219: Keysers Ridge-Backbone Mountain Trailhead, West Virginia | |
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| US 220: McCoole-Cumberland | |
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| Maryland 36: The Narrows-Westernport (Coal Country) | |
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| Maryland 135: Mountain Lake Park-McCoole | |
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| Valley and Ridge and Blue Ridge Provinces | |
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| Great Valley of Carbonates | |
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| Road Guides | |
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| Interstate 70 and US 40: Braddock-Hancock | |
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| Interstate 68 (Including MD 144 and US 40): Hancock-La Vale | |
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| Maryland 17: Middletown-Brunswick | |
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| Maryland 34: Boonsboro-Sharpsburg | |
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| Maryland 51: Cumberland-Paw, Paw, West Virginia | |
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| Maryland 67: Boonsboro-Sandy Hook | |
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| Maryland 68: Boonsboro-Clear Spring | |
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| Maryland 77: Thurmont-Smithsburg | |
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| Maryland 491: Smithsburg-Cascade | |
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| Maryland 550: Cascade-Thurmont | |
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| Bear Pond Mountains | |
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| Piedmont Province | |
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| The Fall Line | |
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| Road Guides to The Maryland Piedmont | |
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| Interstate 70: Frederick-Baltimore | |
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| Interstate 270: Frederick-Rockville | |
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| US 1/Maryland 273: Baltimore-Delaware Border (Cecil and Harford Counties) | |
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| US 15: Point of Rocks-Emmitsburg (the Frederick Valley) | |
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| Maryland 28 and C&O Canal: Point of Rocks-Blockhouse Point | |
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| Maryland 75 and Maryland 31: New Market-Westminster | |
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| Washington, D.C., and The Capital Beltway Area | |
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| Piedmont Sites | |
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| Chesapeake & Ohio Canal National Historic Park: Great Falls-Georgetown | |
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| Theodore Roosevelt Island National Memorial | |
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| Cabin John Regional Park | |
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| Rock Creek Park | |
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| Capital Crescent Trail | |
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| Sligo Creek Parkway | |
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| Wheaton Regional Park and Northwest Branch Trail | |
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| Coastal Plain Sites | |
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| The Mall and East and West Potomac Parks | |
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| Kenilworth Park and Aquatic Gardens | |
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| Bladensburg Waterfront Park and the Anacostia River | |
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| Lake Artemesia Park and Greenbelt Park | |
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| National Arboretum | |
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| Fort Circle Trail | |
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| Watkins Regional Park | |
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| Baltimore and The Baltimore Beltway Area | |
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| I-695: Baltimore Beltway | |
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| Piedmont Sites | |
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| Patapsco Valley State Park | |
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| Gwynns Falls Park | |
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| Bare Hills and Soldiers Delight Natural Environment Area | |
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| Cylburn Arboretum and Jones Falls | |
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| Loch Raven Reservoir | |
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| Oregon Ridge Park | |
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| Coastal Plain Sites | |
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| Patterson Park | |
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| Double Rock Park | |
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| Herring Run Park | |
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| The Delaware Piedmont | |
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| Wilmington Area | |
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| Fort Christina Park | |
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| Brandywine Park in Downtown Wilmington | |
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| Rockford Park | |
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| Brandywine Creek State Park | |
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| Bringhurst Woods Park | |
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| Brandywine Springs State Park | |
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| Mt. Cuba Area and Ashland Nature Center | |
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| Fox Point State Park | |
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| Newark Area | |
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| White Clay Creek State Park | |
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| Iron Hill Park | |
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| Coastal Plain | |
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| Wedge of Unconsolidated Sediment | |
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| Pleistocene Time | |
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| Chesapeake Bay | |
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| Barrier Beaches | |
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| The Future | |
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| Road Guides To Southern Maryland | |
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| Maryland 2: Annapolis-Solomons | |
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| Maryland 5 and Maryland 235: Washington D.C.-Point Lookout | |
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| Maryland 210, Maryland 224, and Maryland 6: Washington D.C.-Indian Head-Maryland Point-Port Tobacco | |
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| Road Guides To Maryland's Eastern Shore | |
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| US 50: Chesapeake Bay Bridge-Ocean City | |
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| Assateague Island National Seashore | |
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| US 113: Berlin-Pocomoke City | |
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| Maryland 213: US 301-Elkton | |
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| Road Guides To Delaware's Coastal Plain | |
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| US 301, US 13, and US 113: C&D Canal-Delmar | |
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| Delaware 1: Dover-Cape Henlopen-Fenwick Island | |
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| Delaware 9: Delaware City-Dover | |
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| Glossary | |
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| References | |
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| Index | |