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Rondaxe Road - Rusty - Breccia - Filled Void

Rondaxe Road - Rusty, breccia-filled void in Proterozoic gneiss near summit of Bald Mountain

Rondaxe Road - Rusty - Breccia-Filled "Void" Near Summit of Bald Mountain
Located in Herkimer County
Image courtesy of Robert Darling

Type: Trail.

Features: Rusty quartz veins cutting across feldspar-quartz gneiss; Breccia-filled fractures.

Feature Type: Structural.

Reference: NYS Geological Association Field Trip Guidebook, 76th Annual Meeting 2007;
Mineralization at the Knox Unconformity and the Western Adirondack Paleosurface
For online reference please visit -

Quadrangle: Old Forge.

Reason for Designation: This site is currently being studied by Robert Darling.
The infilling of the void (and fractures) could be interpreted as sedimentary in origin. If so,
it would demonstrate that Paleozoic sedimentary rocks that once covered the region were
located not far above the present location of Bald Mountain summit. It may also yield clues
to the depositional environment at the time of filling.