Geology of Connecticut



  • 1842 James Gates Percival – Report on the Geology of Connecticut
    • In 8 months surveyed the state East to West at 4 mile intervals. The resurveyed again East to West at intervals between the former to bring him in contact with each of the 4600 square miles of the state.
    • He collected estimated 8000 specimens, as well as noted dips, bearings, and formations making it likely the most accurate survey ever conducted of the state
    • However, despite two years of survey and he was “rushed” by the state legislature and wrote a “hasty outline” of over 500 pages
  • 1906 Manual of the Geology of Connecticut and Preliminary Geological Map by William North Rice and Herbert Ernest Gregory
  • 1924 H. H. Robinson – State Geological and Natural History Survey
  • 1977 The Connecticut Assembly names Garnet the state mineral
  • 1985 John Rodgers (compiler) Bedrock Geological Map of Connecticut

Geological Reports of Parks

This page is a work in progress if you’re interested in more information, shoot me an email (see bottom of the page) and let me know how this page could be of better use to you!

Kettletown State Park


41.424802, -73.208132

Kettletown State Park Connecticut State Park 605 acres in Oxford and Southbury, CT Parking: Several small lots at 1400 Georges Hill Rd, Southbury, CT Trail Map     … Read more…

Southford Falls


41.458784, -73.163979

Southford Falls State Park Connecticut State Park 169 acres in Southbury and Oxford, CT Parking: Large lot near 175 Quaker Farms Rd, Southbury, CT Trail Map   … Read more…

Talcott Ravine


41.823406, -72.493271

Talcott Ravine Northern Connecticut Land Trust Property 26 acres in Vernon, CT Parking: Medium sized lot near 9 Main St Vernon, CT Map         Trails:… Read more…

Penwood State Park


41.849723, -72.779525

Penwood State Park Connecticut State Park 787 acres in Simsbury and Bloomfield, CT Parking: Main Parking: Medium lot near 174 Hartford Rd, Simsbury, CT North End: Shoulder… Read more…