The age of the earth is composed of various views as to how Genesis one should be interpreted. The young earth approach has basically only one view called the Plain-Day view. The six days of creation are believed to be a literal 24 hour time period for each day. Based on the six 24 hour days and the genealogical record, the age of the earth must therefore be 6 to 10,000 (some will go up to 50,000) years old. The Plain-Day view is held by Martin Luther, Henry Morris and Ken Ham.
The old earth(progressive creationism) interpretation has a myriad of of views as to how Genesis one is to be viewed. There are three approaches taken on this view: Partial Creation approach, Long-Day approach and the Non-Literal approach. The next blog will consider the various approaches of the Progressive Creationism view.*
* Bowman, Robert, Outline Studies in Authority, Cannon, and Criticism, P. 59