Debris bands

B1 - Debris band

B2 - Debris band

B3 - Debris band

Close-up of the debris band B3. Note the difference between the high debris content of the basal ice compared with the debris poor glacier ice, derived from the meteoric deposition  and compacting (firnification)

B4 & D3 - Debris band going disrupting some dispersed ice cryofactes section.