Formation and Persistence of Extensional Internally Drained Basins: The Case of the Fucino Basin (Central Apennines, Italy)

The interaction between sedimentation/erosion and faulting represents one of the most intriguing topics in landscape tectonics evolution. Only few studies have been able to document feedback sedimentary loading from field observations. Here, we focus on how sediment loading/unloading influences dynamics fault systems Fucino basin, Central Apennines (Italy). basin a remarkable case study with respect other main extensional basins because its large dimension, square shape, significant thickness, endorheic nature throughout We present detailed structural geomorphologic analysis surroundings, investigating kinematic geometry each strand. slickenlines reveals multiple families slip-vectors timing activity, suggesting change extension slip-direction N240° N200° during middle Pleistocene. Using local isostatic model, estimate that up 30% vertical geological displacement faults, which overall ranges 0.5 2.5 km, is related loading/unloading. demonstrate positive sedimentation may also lead reorganization kinematics increase stress. propose conceptual model for permanent configuration includes effect loading.