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Geological Features of the Connecticut Central Basin

Geological Features of the Connecticut Central Basin. Formation. Mesozoic Era (235 million years ago) plate tectonic process reversed Pangaea began to break apart Atlantic Ocean Began to form Avalonia was firmly attached to N orth America

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Geological Features of the Connecticut Central Basin

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  1. Geological Features of the Connecticut Central Basin

  2. Formation • Mesozoic Era (235 million years ago) plate tectonic process reversed • Pangaea began to break apart • Atlantic Ocean Began to form • Avalonia was firmly attached to North America • Rift Basins began to form on each side of the breakup • The Newark terrain in central Connecticut is the eroded remains of one of these basins • Contains 200 million year old sedimentary rocks and intrusion basalt from lava flows

  3. Formation cont.

  4. Formation cont. As Pangaea broke apart rift basins began to form

  5. Formation cont. • Sediments form the local western and eastern eroded into the basin

  6. Formation cont. • Sedimentary rock- Is formed by the deposition and consolidation of sediments and organic material that settle out of solution and is laid in layers Rt. 9 Middletown Layers of sediment Layers of sediment Layers of sediment

  7. Formation cont. Intrusive Basaltic rock - molten rock magma that moves from inside the earth to the surface into present rock

  8. Sleeping Giant State Park

  9. Location • Sleeping Giant is located just north of New Haven in Hamden Connecticut Sleeping Giant State Park

  10. Sleeping Giant Information • Named by Native Americans of the Quinnipiac Tribe • Mt. resembles a sleeping giant • 2.75 miles long • Highest point 739 ft (225m) • Over 30 miles of hiking trails • Observation tower built at the peak in 1936 by WPA ( Works Progress Administration) (CT D.E.P. 2009)

  11. Map

  12. Why Sleeping Giant State Park? • Fault Block Mt. that formed over 200 million years ago • Composed of trap rock (Basalt)

  13. Evidence of Tectonic Activity Cliff at Giant’s Head 400ft Close up view of Basaltic rock at bottom cliff Bottom of Cliff

  14. Evidence of Tectonic Activity cont. View from the Giant’s Chin Larger Basaltic Rock

  15. Work Cited • http://www.ct.gov/Dep/cwp/view.asp?A=2716&Q=325264 (2009)

  16. Assessment • Write a paragraph and explain the three steps of how the Connecticut river was formed

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