Five types of reefs are described from the northern and southern parts of the Azrou-Khenifra Basin generated by the interactions of microbes and coral communities. The type 1 microbial reefs grew in both shallow- and deep-water settings, with a strong control by glacioeustasy. Type 2 microbial reefs developed in more tranquil periods, associated with common intermounds, and where only a single major regressive-transgressive sequence is recognised. Type 3 microbial reefs developed in constant deeper water conditions, generated by higher rates of subsidence in the basin, and creating an overall deepening-upward sequence. Type 4 microbial reefs recognised in the northern part of the basin have no clear counterparts in southern outcrops, but they are likely the capping strata observed in the latter area. Rugose corals allow to define a Type 5 reef, unrelated to microbial facies, and are recorded in oolitic-bioclastic backshoals or quiet inner platform settings. The presence of similar reefs in both the northern and southern parts of the basin demonstrates that conditions were not as different as previously proposed, and a lithostratigraphical, environmental uniformity occurs, which permits the analysis of different subsidence rates and glacioeustastic influence. In the Azrou-Khenifra Basin, the reefs, as well as other regional features, suggest that the basin, overall, evolved from an extensional tectonic regime during the early Brigantian into a complex extensional or compressional regime during the early Serpukhovian, passing into a predominantly compressional phase during the late Serpukhovian in a polyphase tectonic inversion during the onset of the Variscan Orogeny in the region.

描述了由微生物和珊瑚群落相互作用产生的来自 Azrou-Khenifra 盆地北部和南部的五种珊瑚礁。1 型微生物礁在浅水和深水环境中生长，受到冰川的强烈控制。2 型微生物礁发育于较为平静的时期，与常见的山丘相关，并且仅识别出一个主要的海退序列。3 型微生物礁在恒定的深水条件下发育，由盆地较高的沉降率产生，并形成整体加深-向上的序列。在盆地北部发现的 4 型微生物礁在南部露头中没有明显的对应物，但它们很可能是在后者地区观察到的盖层。褶皱珊瑚允许定义 5 型珊瑚礁，与微生物相无关，并记录在鲕粒-生物碎屑后滩或安静的内部平台环境中。在盆地的北部和南部都存在类似的珊瑚礁，这表明条件并没有之前提出的那么不同，并且出现了岩石地层环境均匀性，这使得分析不同的沉降速率和冰川作用的影响成为可能。在 Azrou-Khenifra 盆地，珊瑚礁以及其他区域特征表明，该盆地总体上从早布里根期的伸展构造状态演变为早期塞尔普霍夫期的复杂伸展或挤压构造，过渡到主要该地区华力斯坎造山运动开始期间多期构造反转的谢尔普霍夫晚期压缩阶段。