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As you correctly pointed out Lyell's 'Principles of Geology' were completed in 1833 (the first volume of three having come out in 1830). How then was Lyell's findings influenced by Evolution when Darwin hadn't returned from his voyage on the Beagle until 1836, let alone made public his theory until 1858?
But this is something you can answer when you find an appropriate thread on geology.
Ideas about biological evolution long predate Darwin, though. Lamarck first started publicising his evolutionary theories in 1800, for example, so there's no reason Lyell couldn't have been influenced by it.