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Geology Facts

Geology Facts
Geology is not only the study of rocks, but also the study of how they change. Geology often gives clues about the history of the Earth. It does this by providing geologists with clues about the various climates on Earth, plate tectonics, and the history of life on Earth.
Interesting Geology Facts:
Geologists use special mapping tools including Geographic Information Systems (GIS).
The study of geology also includes studying the ocean floor.
Some rocks are not solids such as mud and sand.
Geologists place rocks into three different categories: sedimentary rocks, igneous rocks, and metamorphic rocks.
Sedimentary rocks are made when different fragments or segments from other rock types get compacted together.
Igneous rocks are formed when magma cools and hardens.
Metamorphic rocks form when other rock types melt and harden again.
Rocks are constantly changing and most begin as one rock type and end up being another.
The process by which rocks change from one type to another is called the rock cycle.
Weathering is a process that breaks down rocks and can be caused by rain, ice, wind, and chemicals.
Mt. Rushmore is made out of a big igneous rock.
Sometimes lightning strikes the sand on the beach and causes it to form a rock with a glassy appearance.
Magma is actually melted rock.
A group of minerals held together make up rocks.
Diamonds are the hardest minerals.


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