The geometry of carbonate platforms reflects the interaction of several factors. However, the impact of carbonate-producing organisms has been poorly investigated so far. This study applies stratigraphic forward modelling (SFM) and sensitivity analysis to examine, referenced to the Miocene Llucmajor Platform, the effect of changes of dominant biotic production in the oligophotic and euphotic zones on platform geometry. Our results show that the complex interplay of carbonate production rates, bathymetry and variations in accommodation space control the platform geometry. The main driver of progradation is the oligophotic production of rhodalgal sediments during the lowstands. This study demonstrates that platform geometry and internal architecture varies significantly according to the interaction of the predominant carbonate-producing biotas. The input parameters for this study are based on well-understood Miocene carbonate biotas with characteristic euphotic, oligophotic and photo-independent carbonate production in which it is crucial that each carbonate-producing class is modelled explicitly within the simulation run and not averaged with a single carbonate production–depth profile. This is important in subsurface exploration studies based on stratigraphic forward models where the overall platform geometry may be approximated through calibration runs, and constrained by seismic surveys and wellbores. However, the internal architecture is likely to be oversimplified without an in-depth understanding of the target carbonate system and a transfer to forward modelling parameters.

碳酸盐平台的几何形状反映了几个因素的相互作用。然而，迄今为止，对产生碳酸盐的生物的影响的研究很少。本研究应用地层正演模拟 (SFM) 和敏感性分析，参考中新世 Llucmajor 平台，检查寡光区和透光区优势生物产量变化对平台几何形状的影响。我们的研究结果表明，碳酸盐产量、测深和住宿空间变化的复杂相互作用控制着平台的几何形状。进积的主要驱动力是低位期间罗达尔加尔沉积物的寡聚光生产。这项研究表明，平台几何形状和内部结构根据主要产碳酸盐生物群的相互作用而有显着差异。本研究的输入参数基于广为人知的中新世碳酸盐生物群，这些生物群具有典型的透光、寡光和光独立碳酸盐生产，其中至关重要的是，每个碳酸盐生产类别都在模拟运行中明确建模，而不是用单一的平均碳酸盐产量 - 深度剖面。这在基于地层正演模型的地下勘探研究中很重要，其中整个平台几何形状可以通过校准运行来近似，并受到地震勘测和井眼的约束。然而，如果没有深入了解目标碳酸盐系统并转移到正向建模参数，内部架构可能会被过度简化。