Multimethod Geophysical Imaging of Intermontane Basins: The Case Study of Cascina and Palarzano Plains (Central Apennines, Italy)

A novel and integrated geophysical approach has been applied at Cascina and Palarzano plains (Abruzzi region, Central Apennines, Italy) to investigate their subsurface structure with particular attention to the faults bounding the basins. Both plains are characterized by the highest magnetic anomaly intensity measured over the Abruzzi region (up to 10 nT). A 3D reconstruction of these small intermontane basins was performed through a magnetic inversion of a high‐resolution aeromagnetic survey. The model results and the choice of appropriate parameters used for the magnetic inversion calculations were verified and constrained by other geophysical investigations performed in the plain (e.g., gravimetry, electrical resistivity tomography, seismic waves, and ambient noise measurements). Through this approach, a 3D model of Cascina and Palarzano plains was implemented for the first time. The model reveals, for both plains, a thickness of Quaternary filling of ca. 100 m and a clear half‐graben geometry which characterized the Cascina plain.