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Onaping Sudbury breccia roadcuts

ROCKHOUNDING GRAY AREA DOCUMENTED

Where: Ontario · North America · approx. 46.62, -81.4 (vicinity only)

Why this spot: Highway 144 cuts through impact breccias of the Sudbury structure, a favourite of geology field trips

What turns up: Sudbury breccia, shatter cone fragments, sulfide-bearing float

Access: Gray area.

Road allowance collecting of loose fragments tolerated, no blasting scars, mining company lands nearby are off limits.

Open in Mudlark Map →

Satellite view, historic-map overlays, tide/flow context and field notes are in the app. Exact research detail is part of Pro.

Pins are approximate by design. This page is historical research, not permission to dig. Check ownership and local law first.