Geological Features of the Connecticut Central Basin
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Transcript of Geological Features of the Connecticut Central Basin
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Geological Features of the Connecticut Central Basin
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Mesozoic Era (235 million years ago) plate tectonic process reversedPangaea began to break apartAtlantic Ocean Began to formAvalonia was firmly attached to North AmericaRift Basins began to form on each side of the
breakupThe Newark terrain in central Connecticut is the
eroded remains of one of these basinsContains 200 million year old sedimentary rocks and
intrusion basalt from lava flows
Formation
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Formation cont.
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Formation cont.
As Pangaea broke apart rift basins began to form
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Sediments form the local western and eastern eroded into the basin
Formation cont.
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Sedimentary rock- Is formed by the deposition and consolidation of sediments and organic material that settle out of solution and is laid in layers
Formation cont.
Rt. 9 Middletown
Layers of sediment
Layers of sediment
Layers of sediment
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Intrusive Basaltic rock - molten rock magma that moves from inside the earth to the surface into present rock
Formation cont.
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Sleeping Giant State Park
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Sleeping Giant is located just north of New Haven in Hamden Connecticut
Location
Sleeping Giant State Park
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Named by Native Americans of the Quinnipiac Tribe
Mt. resembles a sleeping giant 2.75 miles longHighest point 739 ft (225m)Over 30 miles of hiking trailsObservation tower built at the
peak in 1936 by WPA ( Works Progress Administration) (CT D.E.P. 2009)
Sleeping Giant Information
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Map
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Fault Block Mt. that formed over 200 million years ago
Composed of trap rock (Basalt)
Why Sleeping Giant State Park?
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Evidence of Tectonic ActivityCliff at Giant’s Head 400ft
Bottom of Cliff
Close up view of Basaltic rock at bottom cliff
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Evidence of Tectonic Activity cont.
Larger Basaltic Rock
View from the Giant’s Chin
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http://www.ct.gov/Dep/cwp/view.asp?A=2716&Q=325264 (2009)
Work Cited
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Write a paragraph and explain the three steps of how the Connecticut river was formed
Assessment