* Granite: Forms deep underground (intrusive) from slowly cooling magma. This slow cooling allows large crystals to form, giving granite its characteristic coarse-grained texture.
* Rhyolite: Forms on the Earth's surface (extrusive) from rapidly cooling lava. This rapid cooling leads to small crystals or even a glassy texture.
Therefore, neither rock is inherently "older" than the other. They can both form at any time in Earth's history.
Think of it this way:
* Granite is like a slow-cooked stew, giving it time to develop big, flavorful chunks.
* Rhyolite is like a quick stir-fry, resulting in smaller, more uniform pieces.
The age of a specific granite or rhyolite sample can be determined through radioactive dating techniques.
