What event happened while Charles Lyell was alive?

While Charles Lyell was alive (1797-1875), one significant event was the publication of his seminal work, "Principles of Geology," which first appeared in 1830. This work played a crucial role in establishing the foundation of modern geology and introduced the concept of uniformitarianism, suggesting that the Earth's features were shaped by ongoing processes over long periods. Additionally, Lyell’s ideas influenced Charles Darwin, particularly during the formulation of Darwin's theory of evolution.