ESTES PARK - JULY 22: U.S. Secretary of the Interior Ryan Zinke explores Rocky Mountain National Park's Alluvial Fan Trail area following a press conference in which Zinke and U.S. Senator Cory ...

Researchers used black sediment to represent large grains, or "gravel" in rivers, and white sediment as "sand" to create a model of an alluvial fan. Disclaimer: AAAS and EurekAlert! are not ...

Geomorphic features typically associated with extreme rainfall events in terrestrial settings, including extensive fluvial features and alluvial fans, have been detected on Titan’s surface.