Cross-bedding is the way new sedimentary deposits are affected by water or wind currents. When sediment slowly settles down, it accumulates in parallel, horizontal layers. When moved by currents, it accumulates at an angle, sloping down in the direction of the current. The presence of rounded pebbles or marine fossils in the rocks indicates that the cross-bedding was caused by water, not wind currents.
Common in sedimentary rocks in southern Jordan, including Wadi Dana, Wadi Rum, and Mudawwara.