Roadcuts of Geologic Interest: I-575 and Georgia Highway 515

I-575 splits from I-75 in Marietta, Georgia. Traveling north toward Canton, Blue Ridge, and Mineral Bluff, I-575 traverses metaigneous upper Piedmont terrain of the Gold Belt, then metasediments of the Murphy Marble Belt. North of Canton, I-575 becomes Georgia Highway 515, but continues to follow the trace of the Marble Belt to Blue Ridge. A few interesting roadcuts and nearby sites:

Cove Road, east of Jasper

East of Ga. Hwy 515, contact between Murphy marble and overlying schist is exposed where Cove Road crosses Long Swamp Creek.
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Old Mill White Road, east of Tate

East of Ga. Hwy 515, mafic metaigneous boulders lie beside Old Mill White Road near its intersection with Ga. Hwy 53.
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Marble quarries on Ga. Hwy. 53

East of Ga. Hwy 515, near Tate, quarries operated by IMERYS, Polycor, and J. M Huber extract Murphy marble.
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Riverstone Parkway, Canton

About three miles east of I-575, on the south side of Riverstone Parkway, grading at a warehouse facility (Belnick, as of October 2007) has exposed folded calcareous metasandstone.
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Canton -- NB between Georgia Highway 140 and Georgia Highway 20

Two cut faces expose Gold Belt mafic schist loaded with garnets like raisin bread.
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1600 Towne Lake Parkway, Woodstock

About a mile west of I-575, a construction cut behind CVS Pharmacy exposes sheared and faulted gneiss and amphibolite.
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Bell's Ferry Road entrance ramp NB

A single cut face exposes Laura Lake amphibolite
Similar to Barrett Parkway exposure.