There's no such word as "geoloist". It's likely a misspelling of geologist, which is a scientist who studies the Earth's physical structure, its history, and the processes that shape it.

Geologists examine rocks, minerals, fossils, and landforms to understand:

* The composition and structure of the Earth: from its core to its surface.

* The history of the Earth: including the formation of continents, mountains, oceans, and the evolution of life.

* Natural resources: like oil, gas, water, and minerals.

* Environmental issues: such as climate change, pollution, and natural hazards.

If you're interested in learning more about geology, you can find information on websites like the Geological Society of America (GSA) or the American Geosciences Institute (AGI).