Here is a good, fairly brief, article on the conclusive evidence for the age of the earth. It is written by geologists who are members of the Presbyterian Church in America (PCA). For a more extensive analysis, see The Bible, Rocks, and Time by Young and Stearley, geologists at Calvin College.
Yes, I still find this topic incredibly interesting. There are still several high-profile theologians in American evangelicalism who use Romans 5 — death entered through Adam’s sin, therefore no death/evolution in the natural world before man — as the “evidence” that over-rules the unanimous consent of geologists around the world.