Brevard Zone Mylonite:
I-285 about 1 mile north of US 78
(Formerly Bankhead Highway, now Hollowell Parkway)
West of Atlanta, Georgia

Winter is a good time to visit this site, when you can actually see rocks through the vegetation. In any other season, bring a machete to deal with Privet and Blackberry. As of late 2007, Georgia DOT has cleared trees and brush from this right-of-way, so these cut faces now are easier to approach.

Mylonite -- I-285

A bit of the old Ultra-Mylonite
Dark, iron-rich, fine-grain, egregiously tectonized mylonite
I-285 NB about 1 mile north of US 78
West of Atlanta, Ga



Palmetto granite over mylonite -- I-285

Fault Contact
Sheared Palmetto granite thrust over dark mylonite
(Hammer rests in thrust fault)
I-285 SB about 1 mile north of US 78
West of Atlanta, Ga



Palmetto granite over mylonite -- I-285

And on the other side . . .
(Cap rests just below contact)
I-285 NB about 1 mile north of US 78
West of Atlanta, Ga



mylonite slice within granite

Embedded in granite above the fault, a dark mylonite slice . . .
(Photographer's cap for scale)
I-285 NB about 1 mile north of US 78
West of Atlanta, Ga



augen gneiss within granite

. . . and mylonitic augen gneiss . . .
Similar to Clairmont or Long Island
I-285 NB about 1 mile north of US 78
West of Atlanta, Ga



pseudoconglomerate within granite

. . . and this stuff!
Tectonic pseudoconglomerate(?) and Virginia creeper
I-285 NB about 1 mile north of US 78
West of Atlanta, Ga