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Fudud in la rakibo oo Fudud Dhibicaha Saamaynta Shaft Toosan
Erayga saameyn ayaa macno samaynaya in noocaan gaarka ah ee burburiyaha qaar ka mid ah saamaynta loo isticmaalo burburinta dhagxaanta.Noocyada caadiga ah ee cadaadiska burburinta ayaa loo sameeyaa burburinta dhagaxyada.Laakin, bur buriyeyaasha saamaynta waxay ku lug leeyihiin habka saamaynta.Burburkii ugu horreeyay ee Shaft Saamaynta Toosan waxa alifay Francis E. Agnew 1920-meeyadii.Waxaa loo qaabeeyey in loo isticmaalo burburinta heerka sare, sare ama quaternary.Burburiyeyaasha ayaa ku habboon codsiyo kala duwan oo ay ka mid yihiin soo saarista ciid tayo sare leh oo la soo saaray, isku-darka si fiican loo sameeyay iyo macdanta warshadaha.Burburiyeyaasha sidoo kale waxaa loo isticmaali karaa qaabeynta ama ka saarida dhagxaan jilicsan ee wadar ahaan.
