Like Darwin's theories, the work of Sir Charles Lyell provided logical,
rational explanations that suited the beliefs of many scientists.Sir Charles Lyell was a renowned geologist of the mid-nineteenth century. He was a firm believer in uniformitarianism.
This philosophy claims that geological and biological "causes," or
forces, have always been working in the same way and with the same
intensity. Lyell's work formed the foundation of belief in a universe
billions of years old. Though Lyell had trouble accepting some
evolutionary theories, his work heavily influenced Charles Darwin. In
fact, Darwin's concept of gradual evolution lacked an acceptable time
frame until he embraced Lyell's old-earth theories.