Dr Shari Gallop and her collaborators have published an important paper that considers how coastal management should account for geological features: Geologically controlled sandy beaches: Their geomorphology, morphodynamics and classification
Beaches that are geologically controlled by rock and coral formations are the rule, not the exception. This paper reviews the current understanding of geologically controlled beaches, bringing together a range of terminologies (including embayed beaches, shore platform beaches, relict beaches, and perched beaches, among others) and processes, with the aim of exploring the multiple ways in which geology influences beach morphology and morphodynamics. We bring these processes together by presenting a conceptual model of alongshore and cross-shore levels of geological control. Given the prevalence of geologically controlled beaches along the world's coasts, it is paramount for coastal management to consider how these beaches differ from unconstrained beaches and avoid applying inappropriate models and tools, especially with our uncertain future climate.