AMS data of small scale marble shear zone, Viana do Alentejo, Ossa-Morena Zone, Portugal, complemented with microstructural and chemical data

We studied in 3D detail magnetic fabric in a shear zone in marble. These major data are supplemented with microstructural and chemical composition data. Measurements of anisotropy of magnetic susceptibility (AMS) were carried on 1947 samples from March 2021 to June 2023.