Resumen de Control ecológico del espacio de acomodación en carbonatos; las plataformas del Mioceno Superior de las Baleares
Stratigraphic architecture of depositional sequences depends on the balance between changes in accommodation and sedimentation rate. In terrigenous systems, these factors are independent. In carbonates, however, they are interdependent. Relative sea-level changes and sea-floor topography determine the area and efficiency of the carbonate factory and other factors such nutrients and temperature also influence carbonate production. Upper Miocene platforms o f the Balearic Islands illustrate this interdependence between accommodation and carbonate production. A distallysteepened ramp resulted from a biotic system producing loose grains throughout the photic zone and particularly in the deeper oligophotic zone. A rimmed platform resulted from euphotic carbonate production in a framework-dominated reef system. These two types of platforms exhibit different facies belts, internal architecture and distribution o f heterogeneities despite being deposited under similar conditions of high-frequency sea level fluctuations. Additionally, the change from the ramp to the rimmed shelf resulted from the replacement of a system with a physically-dominated base level by a system with a biologically-dom inated base level. Base level for sediment accumulation for the loose foramol-rhodalgal sediment associations of the ramp was related to wave base and associated currents, whereas base level for the framework-dominated reef complex was sea level.
