the molten or semi-molten natural material from which all igneous rocks are formed and found beneath the surface of the Earth

The process that formed and changed Earth from its beginning to the present

are types of rock that are formed by the accumulation or deposition of mineral or organic particles at Earth's surface, followed by cementation.

Any remains, impression, or trace of a living thing of a former geologic age

the process by which natural forces, like water or wind, wear away and transport materials like soil or rock

form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors.

The theory that the crust is divided into large pieces called tectonic plates that slowly move on top of the mantle

a geological process that describes the transformation of rocks between the three main types: igneous, metamorphic, and sedimentary

The boundary between two tectonic plates moving toward each other, resulting in volcanic activity when a denser oceanic plate subducts, or moves below, a continental plate or another oceanic plate

preserved evidence of the interactions between organisms and their environment, such as footprints, burrows, nests, or feces.

the idea that natural processes have operated in the same way throughout the past and present, and will continue to do so in the future.

the preserved remains or traces of organisms that lived in the past.

the remains of the actual organisms.