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Shale formation with numerous horizontal beds of rock at Marble Canyon in Kootenay National Park, in the Canadian province of British Columbia (2025)
Post Reply RetroFed Forum Forum Index » Earth, Environment, and Geosciences
AuthorMessage
Innerworld lemmy.world Innerworld@lemmy.world
Joined: 2026-01-16
Quote

cross-posted from: https://lemmy.world/post/46766835

Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of clay minerals and silt-sized particles of other minerals, especially quartz and calcite. It is characterized by fissility, the tendency to split into thin layers less than 1 centimetre (0.39 in) in thickness, and is the most common sedimentary rock.

Photographer: Chris Woodrich

CC BY-SA 4.0
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