Lord kelvin argued that, based on the temperature of rocks, the earth could not be as old some geologists thought. what turned out to be wrong with his reasoning?

various reasons can be assessed for the same.

Explanation:

Lord kelvin argued that based on the temperature of rocks, the earth could not have been as old as some geologists have thought was wrong as he was unable to prove that earth's geologic formations. Might have impacted the formation of earth interior and these changes are dominating effects that have created the plants from interior structures.  The asthenosphere the thick layer on earth below the surface of the lithosphere is a zone of melting and zone is characterized by rocks that existed.  Since the beginning earth and later on theories given by other scientist prove that the earth internal thermodynamic effect cause changes in the structure, process, and stage of the planet.

It's lithogenous i believe of course i looked it up.