Source: https://www.researchgate.net/profile/Lupeng_Yu/publication/264597107_Origin_and_lateral_migration_of_linear_dunes_in_the_Qaidam_Basin_of_NW_China_revealed_by_dune_sediments_internal_structures_and_optically_stimulated_luminescence_ages_with_implications_for_linear_dune/links/54d9ae770cf25013d042b2cf/Origin-and-lateral-migration-of-linear-dunes-in-the-Qaidam-Basin-of-NW-China-revealed-by-dune-sediments-internal-structures-and-optically-stimulated-luminescence-ages-with-implications-for-linear-d.pdf