It was proven by the stratigraphy of two ice cores from Collins Ice Cap that the summit of Main dome(with elevation of 700m or so) belongs to warm infiltration zone,while that of Small dome(with elevation of 250m or so)to infiltration zone.

• 柯林斯冰帽两支冰芯层位记录证实了该冰帽主冰穹顶部（海拔约700m）属暖渗浸带，小冰穹顶部（海拔约250m）属渗浸带。