sedimentary

Layered shale and sandstone gorge

Shale and thin-bedded sandstone, likely Devonian or older sedimentary strata

AI-generated identification · may be incorrect

Dark gray, thinly bedded rock with planar cleavage and weathered ledges; shale has Mohs hardness about 2–3, sandstone about 6–7, with dull to subtly gritty luster. Bedding and jointing control the stepped waterfall and gorge walls.

Identified August 11, 2026More sedimentary →

Explore Layered shale and sandstone gorge in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

At a glance

Common name: Layered shale and sandstone gorge
Scientific name: Shale and thin-bedded sandstone, likely Devonian or older sedimentary strata
Category: sedimentary
Identified: August 11, 2026
Method: Standard

AI Estimated Value

In-place outcrops have no ordinary collector value; loose common shale or sandstone specimens typically sell for about $5–$30, with attractive fossiliferous or unusual pieces potentially $20–$100.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

These rocks formed from compacted and lithified mud and sand deposited in ancient marine or river environments, commonly hundreds of millions of years old; later uplift, fracturing, and stream erosion carved the gorge.

Uses & applications

Used locally as building stone, paving, aggregate, and decorative slabs, though fissile shale is generally unsuitable for major structural use. The pictured formation has primarily scenic, recreational, and geological-educational value.

Geological facts

The image shows a natural waterfall gorge, not a single hand specimen; the prominent layering is sedimentary bedding rather than mineral cleavage. Differential erosion causes softer shale layers to recess while tougher sandstone forms ledges.

Field identification & locations

Identify it by continuous thin layers, earthy gray-brown color, shale splitting along bedding, and gritty sandstone surfaces; common in folded and uplifted sedimentary basins worldwide. Exact identification requires locality information and close examination.