geosphere
The term geosphere is usually used to refer to the densest parts of Earth, which consists of mostly of rock and regolith. The geosphere is made up of the inside of the Earth. So basically, the geosphere is broken up into four major layers, the crust, mantle, outer core, and inner core that all make up the layers of the Earth which are talked about in more detail in the section entitled The Layers Of The Earth. You can find the page above on your own, or click the button below to take you to the first page of the section.