Not only was there a layer of ice above the atmosphere, the Bible teaches that the earth also had a layer of water UNDER the crust of the earth. The earth's crust today is about 10-25 miles thick. Many who have studied this topic agree that the earth had huge reservoirs of water maybe ten miles down, when the earth was first created. Psalm 24:1-2, "The earth is the Lord's and the fullness thereof; the world, and they that dwell therein. For He hath founded it UPON the seas, and established it UPON the floods..”.