Data files and matlab functions associated to the manuscript: A fan-shaped subglacial basin province in East Antarctica formed by rotational extension

Data files and matlab functions associated to the paper: E. Armadillo et al. (2026), A fan-shaped subglacial basin province in East Antarctica formed by rotational extension, Nature Geoscience, https://doi.org/10.1038/s41561-026-01991-6Contents:Folder: Filtered_rebounded_bed It contains the text xyz file "terracing_filter_output.xyz" with the output of the non-linear terracing filtering procedure (see "Materials and Methods" section for details). The file has three columns: LON: WGS84 longitude in decimal degree LAT: WGS84 latutude in decimal degree Elevation: elevation in metresFolder: Matlab_functions It contains matlab functions used for:i) Estimate the Euler poles function: ep_estimate.m Usage: [ep_lat_good,ep_lon_good,error_good,ep_lat_all,ep_lon_all,error_all,lat_int,lon_int]=ep_estimate('all_single.xyz', 'all_bisect.xyz','great_circles.xyz','great_circles_over_faults.xyz','est_euler_poles.xyz','est_circle_error.xyz');ii) Compute the error elipse of estimated euler poles Function: error_ell_est_mc.m Usage: [percentage,area,a_def,b_def,teta_def]=error_ell_est_mc(lat_int,lon_int,ep_lat_good,ep_lon_good,[600 1000],[200 500],[-40 -10],0.6827,'error_ellipse_new_6827.xyz');iii) Estimate the Euler pole of small circles Function: estimate_small_circle_centre.m Usage: [lat_sc,lon_sc,radius_sc]=estimate_small_circle_centre('C1_segments_def_NEW.xyz',-85.5,123.9,'C1_SC.xyz',[])Folder: Detected_faults It contains the shape file of all the detected faults from the bed topography (see Methods section in the paper for details) File: faults_all_ln.shp