Sentence:  Deposits from the <WSD>glaciation</WSD> are sparse, but glacial surfaces at 4150–4300 m in the Hunza area, above 2600 m in the Gilgit region, above 3200 m in the Haramosh region, above 4000 m on Deosai, and at 3200–3500 m in the Shigar valley area provide much evidence for this <WSD>glaciation</WSD>. 
Meaning of the word marked with <WSD> tags:  A particular instance of glacier formation.