Palaeozoic stromatoporoids, throughout their 100-million + year history (Middle Ordovician to Late Devonian and rare Carboniferous), are better preserved than originally aragonite molluscs, but less well-preserved than low magnesium-calcite brachiopods, bryozoans, trilobites and corals. However, the original mineralogy of stromatoporoids remains unresolved, and details of their diagenesis are patchy. This study of approximately 2000 stromatoporoids and the literature recognises three diagenetic stages, applicable throughout their geological history. Timing of processes may vary in and between stages; some components are not always present. Stage 1, on or just below sediment surface, comprises the following: micrite filling of upper gallery space after death, then filling of any remaining space by non-ferroan then ferroan calcite in decreasing oxygen of pore-waters; partial lithification of associated sediment from which stromatoporoids may be exhumed and redeposited, evidence of general early lithification of middle Palaeozoic shallow-marine carbonates; microdolomite formation, with the Mg interpreted to have been derived from original high-Mg calcite (HMC) mineralogy (likely overlaps Stage 2). Stage 2, short distance below sediment surface, comprising the following: fabric-retentive recrystallisation (FRR) of stromatoporoid skeletons forming fabric-retentive irregular calcite (FRIC), mostly orientated normal to growth layers, best seen in cross-polarised light. FRIC stops at stromatoporoid margins in contact with sediment and bioclasts. FRIC geometry varies, indicating some taxonomic control. Evidence that FRIC formed early in diagenetic history includes syntaxial continuation of FRIC into some sub-stromatoporoid cavities (Type 1 cement), although others were pre-occupied by early cement fills (Type 2 cement) formed before FRR, preventing syntaxial continuation of FRIC into cavities. Likely contemporaneous with FRIC formation, stromatoporoids in argillaceous micrites drew carbonate from adjacent sediment during reorganisation of argillaceous micrite into limestone–marl rhythms that are also early diagenetic. Stage 3, largely shallow burial, comprises the following: dissolution and silicification, but these may have occurred earlier in stromatoporoid diagenetic histories (more data required); burial pressure dissolution forming stylolites.

在其超过一亿年的历史中（古奥陶纪至晚泥盆世和稀有石炭纪），古生代叠层孔洞比原始文石软体动物的保存性更好，但比低镁方解石腕足动物，苔藓动物，三叶虫和珊瑚保存得更好。然而，间质多孔的原始矿物学仍未解决，其成岩作用的细节还不完整。这项对大约2000个基质孔隙的研究以及相关文献认识到三个成岩阶段，适用于整个地质史。进程的时间可能在阶段之间以及阶段之间有所不同；有些组件并不总是存在。沉积物表面上或沉积物正下方的第1阶段包括以下内容：死亡后上部画廊空间的微尘填充，然后用非亚铁填充任何剩余的空间，然后用亚铁方解石填充减少孔隙水中的氧气；伴生沉积物的部分岩化，可能从中挖掘出并再沉积间质孔隙，这是中古生界浅海碳酸盐碳酸盐一般早期岩化的证据；微白云石的形成，其中的Mg解释为源自原始的高Mg方解石（HMC）矿物学（可能与阶段2重叠）。第2阶段，沉积物表面以下短距离，包括以下内容：层间多孔骨架的织物保持性重结晶（FRR），形成织物保持性不规则方解石（FRIC），多数定向为垂直于生长层，最好在交叉偏振光下看到。FRIC停在与沉积物和生物碎屑接触的层间孔边缘。FRIC的几何形状各不相同，这表明需要进行一些分类控制。在成岩史早期形成的FRIC的证据包括FRIC在某些层间孔洞腔（1型水泥）中的语法延续性，尽管其他证据被FRR之前形成的早期水泥充填物（2型水泥）所占据，从而阻止了FRIC在语法上的延续。蛀牙。可能与FRIC形成同时，泥质微晶岩中的层状孔隙在泥质微晶岩重新组织成早期成岩作用的石灰岩-泥灰岩节律时从邻近的沉积物中吸取了碳酸盐。第三阶段，大部分为浅埋葬，包括以下内容：溶解和硅化作用，但这些可能早在间质孔隙成岩史中发生（需要更多数据）；埋藏压力的溶解形成铁石。