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#reef

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Or M. Bialik

Getting a #reef to solidify and harden is one of those things that seems simple (it's the framework builders, isn't it?). But it's actually (much) more complicated (different orders of strength and crystallinity, resistance to bioerosion, chemical stability). Dissolution, alkalinity generation, and precipitation might be key here. Sulfate reduction does some interesting things there.
link.springer.com/article/10.1

Porewater pH versus sulphide concentration for samples collected in 2015 and 2016 along with equilibrium model curves. Also plotted are the data from Tribble (1993) for comparison. Model curves are for equilibrium experiments conducted with (Ω = 0.99, and 1.01) and without (Ω = 0, and ∞) carbonate mineral dissolution and precipitation and with and without DO present (units in μmol L−1). Starting DIC and TA were set at 1919 ± 3 μmol kg−1 and 2197 ± 2 μmol kg−1 (n = 3), the value of surface ocean waters near One Tree Island (OTI). The curves provide a boundary for pH changes with sulphide production from organic matter oxidation
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