Ripple marks in sandstone main content.

Ripple marks in sandstone

Ripple marks in sandstone_HERO

Exhibition Text

The upper surface of this rock shows a wavy pattern known as ripple marks. These structures are formed by the movement of water (or wind) over sediment, and are useful for determining the direction of the current.

AMNH collection

For Educators

Topic: Earth Science

Subtopic: Earth Formation/Evolution

Keywords: Erosion, Geology, Rocks

Audience: General