Gap people believe in the literal events of Genesis chapter one also. They believe a day is 1000 years and all the events happened in the last 14,000 years. It is just they believe in a old earth also, but God destroyed most of the life on the earth and began all over again.
If you look at this earth 14,000 years ago, it was just as the Bible says it was: "without form, and void; and darkness was upon the face of the deep". If you study the ice samples you will see that the earth's atmosphere was filled with dust at that time. Then when the dust settled the light came though. The first two days had to do with the atmosphere.
Also, the earth was covered with water 12,000 years ago. The next two days had to do with the seperation of the land from the water. Then the seasons were established as we know them today. Before this, the world was in a ice age and the climate and seasons were very different.
Then 10,000 years ago, on the fifth and the sixth day life on the earth began to form.
Then 8,000 years ago, God rested for 1000 years.
Six thousand years ago. God formed Adam and Eve and the Garden of Eden.