There was a new focus on “processes” within sedimentary geology from the 1960s. It was initially driven by alluvial-channel and flow-regime experiments, but led to the concept of facies succession for all depositional environments and eventually, on the larger scale, to a new stratigraphy in which base-level change was the key ingredient. Systematic study of modern environments led to a marked improvement in our knowledge of alluvial to deepwater sedimentary systems and how they are linked. New access to seismic data, especially on shelf margins and deep marine environments, was critical for further great changes in our understanding of marine...