Please provide the list of rocks you want to know about. I can then tell you about the processes at hot spots that help form those specific rocks.

For example, you could ask:

* "What processes found at hot spots will help form basalt, granite, and peridotite?"

* "What processes found at hot spots will help form igneous rocks?"

* "What processes found at hot spots will help form volcanic rocks?"

Let me know what rocks you're interested in, and I'll give you a detailed explanation.