While geology covers a vast range of topics related to the Earth, a specific branch within geology focuses on Earth's origin and early development. This branch is called geochronology.

Here's a breakdown:

* Geology: The science that studies the Earth's composition, structure, properties, and history. It includes the study of rocks, minerals, landforms, and geological processes.

* Geochronology: The branch of geology that studies the age of rocks, fossils, and geological events. It uses methods like radiometric dating to determine the Earth's age and the timeline of major events in its history.

So, while geology encompasses the study of Earth's formation, geochronology delves deeper into the specifics of its origin and development.