Dataset for: Scale-dependent geomorphic adjustment across the Chalus–Karaj drainage divide, Central Alborz: Contrasting basin-scale and fault-proximal signals

This dataset contains derived geomorphic datasets, lithological shapefiles and Python analysis scripts supporting the findings reported in the associated manuscript. The dataset includes: (1) enriched lithological shapefile (Lithology_enriched.shp) derived from 1:100,000 GSI geological map products, with classified rock-type groups, colour codes and resistance flags; (2) statistical analysis results including Mann-Whitney U tests, effect sizes and Chi-square tests for all geomorphic comparisons; (3) lithological context analysis including anomaly density per rock type and mean geomorphic metrics by lithological group; and (4) Python scripts for normality testing, statistical analyses, knickpoint abundance and lithological attribution. All spatial data are in WGS 84 / UTM Zone 39N (EPSG:32639). Primary topographic input (SRTM V3) is available from NASA LP DAAC at https://doi.org/10.5067/MEASURES/SRTM/SRTMGL1.003.