Wave-formed ripple Wave-formed ripple In sedimentology, wave-formed ripples or wave-formed ripple marks are a feature of sediments (sandstones, limestones, siltstones) and dunes. These ripple marks are often characterised (and thus distinguished from current ripples) by symmetric cross sections and long relatively straight crests, which may commonly bifurcate. Commonly, these crests can be truncated by subsequent flows. Their wavelength (periodicity) depends on the sediment grain size, water depth and water-particle orbits in the waves. On tidal flats the pattern of wave-formed ripples may be complicated, as a product of changing depth and wind and tidal runoff directions. Symmetrical ripples are commonly found in
What Is This Thing Called Love? (Alexander O'Neal song) What Is This Thing Called Love? (Alexander O'Neal song) "What Is This Thing Called Love?" is a song written by Jimmy Jam and Terry Lewis and recorded by American recording artist Alexander O'Neal. It is the second single from the singer's fourth solo album, "All True Man" (1991). The song's distinctive backing vocals were performed by Lisa Keith. Following the successful chart performances of the "All True Man" single "All True Man", "What Is This Thing Called Love?" was released as the album's second single. Alexander O'Neal's 19th hit single and it reached #53 in the UK Singles Chart. In