Letter to Sir Charles Lyell from James Croll

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Letter to Sir Charles Lyell from James Croll concerning his calculations of the thickness of the ice sheets and the extent of the submergence which he claims are based on geological grounds. He also discusses the possible extent of the submergence, the effect on the climate of the Ice sheet and his belief that the grinding down of rock can not be attributed to floating ice but to the extent of time that the rock was covered in ice. He also states that he feels confident that the submergence and emergence both of the glacial and coal periods can be accounted for on cosmical principles, 6 July 1866.

• Coal Period
• Cosmical Theory
• Geology
• Glacial Epoch
• Ice Sheets
• Submergence

• Croll | James | 1821-1890 | physical geologist and Keeper of Maps and Correspondence of the Geological Survey of Scotland