“…Under what might be considered optimal reef building conditions, the "norm" is most commonly a situation where the production-dominated state persists more or less continuously to drive net in situ reef framework accumulation and reef accretion (Kleypas et al, 2001). Indeed, the Holocene record of reef-building, as discerned from core records, provides numerous examples of semicontinuous vertical reef building (Gischler, 2015;Montaggioni, 2005), with vertical reef accretion persisting until otherwise sea-level constrained , or where other external environmental factors (e.g., water quality, ocean temperatures) limit accretion (Toth, Kuffner, Stathakopoulos, & Shinn, 2018 (Browne, Smithers, & Perry, 2013). In such settings, framework production (coral growth) clearly remains important, but core records show that a high proportion of the accumulating reef structure comprises fine-grained terrigenoclastic sediments that represent a long-term external input to the reef building budget (Perry et al, 2012).…”