Earth scientists or geologists often use other titles, depending on their area of specialization. The geologist may be called a geophysicist, petroleum geologist, gemologist, mineralogist, seismologist, paleontologist, oceanographer, geochemist, volcanologist, engineering geologist, hydro geologist, or soil scientist. The large number of titles by which geologists are called indicates the diversity of possible careers. In addition, there are many other career opportunities that do not specifically require training as a geologist, but rather require the logical thinking skills that a geologist possesses.
In addition, Geologists are employed in private industry, government agencies and educational
institutions. Many geologists are also employed in consulting firms that work on challenging problems in engineering geology or in various environmentally sensitive aspects of hazardous waste disposal and hydrogeology. Opportunities are also available for those who desire to establish and operate their own business.