Stair-stepping Sand Injectites at Lewiston, ID 

A deep dive into sheeted sand injectites (clastic dikes) intruding Pleistocene megaflood deposits in the Lewiston Basin, Idaho. Learn something new about the dikes at this is a popular and often visited outcrop. #sandinjectite #clasticdike #missoulafloods #megaflood #washingtongeology #touchetbeds #injectite #lewistonidaho #snakeriver