Molten iron balls allowed to cool.
Earth is old.
Hutton was a poor writer so his ideas were not widely accepted. Not when and how long Relative timescale was developed 100s of years ago Fundamental Principles Relative dating is based upon common-sense principles. Superposition Older sedimentary rocks lie underneath younger sedimentary rocks. Original Horizontality Sediments deposited in nearly horizontal layers. If a dike cuts across several limestone beds, the dike is younger because the limestone had to have been deposited first.