I-85 Roadcuts


I-85 traverses Georgia on a northeast-southwest course, more-or-less parallel to the Brevard Zone and the Chattahoochee River. In consequence, most I-85 roadcuts in the Atlanta area expose Clairmont formation or close relatives thereof.


Boford Dam
Rock in the rubble pile below Buford Dam -- and in the bed of the Chattahoochee River -- is probably Clairmont formation.
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Ga. Hwy 20 at Suwanee Dam Road
Construction cut behind shopping center in the intersection's northeast quadrant
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Clairmont Road exit northbound
Type locality for the Clairmont formation. Look for a massive cut face in the southwest quadrant of the intersection, alongside the exit ramp from I-85 northbound. Nearly impossible to miss, even if you are not looking for it.
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Georgia Highway 13 (I-85 feeder) southbound near Piedmont Road
Cut face on right (west) along the feeder road to I-85 southbound, at the Armour Drive entrance ramp south of Piedmont Road.
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I-85 entrance ramp to I-75 northbound
Cut face on right of entrance ramp from I-85 southbound to I-75 northbound, departing midtown Atlanta. You must be crazy to stop here. (No photos.)
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South Fulton Parkway
South Fulton Parkway branches from I-85 southbound amid the interchange with I-285 southwest of Atlanta. Roadcuts about 1/2 mile east of Cedar Grove Road and about 1-1/2 miles east of Georgia Highway 92 (Campbellton-Fairburn Road) expose rock strongly resembling Clairmont formation.


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