|Geoscientists follow paths of exploration and discovery in quest of solutions to some of society's most challenging problems:
|Geoscientists are stewards or caretakers of Earth's resources and environment. They work to understand natural processes on Earth and other planets. Investigating the Earth, its soils, oceans, and atmosphere; forecasting the weather; developing land-use plans; exploring other planets and the solar system; determining environmental impacts; and finding new sources of useful Earth materials are just a few of the ways geoscientists contribute to our understanding of Earth processes and history. Geoscientists provide essential information for solving problems and establishing governmental policies for resource management; environmental protection; and public health, safety, and welfare.
Geoscientists are curious about the Earth and the solar system. Is there life on other planets? How are they changing? What effects will shrinking glaciers have on the oceans and climate? What makes a continent move, a mountain form, a volcano erupt? Why did the dinosaurs become extinct?
Geoscientists are concerned about the Earth. How is the global climate changing? How do Earth systems work? How and where should we dispose of industrial wastes? How can society's growing demands for energy and water be satisfied while conserving natural resources for future generations? As global populations increase, can we grow enough food and fiber to sustain them?
The Earth is an outdoor laboratory filled with opportunities to observe Earth processes in action. By applying their knowledge of forces and factors that shape the Earth, geoscientists seek to reconstruct the past and anticipate the future.
|Nature of the Work|
Geologists study the physical aspects and history of the earth. They identify and examine rocks, study information collected by remote sensing instruments in satellites, conduct geological surveys, construct maps, and use instruments to measure the earth's gravity and magnetic field. They also analyze information collected through seismic prospecting, which involves bouncing sound waves off buried rock layers. Some geologists search for oil, natural gas, minerals, and underground water.
Geoscientists play an increasingly important part in studying, preserving, and cleaning up the environment. Many design and monitor waste disposal sites, preserve water supplies, and reclaim contaminated land and water to comply with stricter Federal environmental rules. They also help locate safe sites for hazardous waste facilities and landfills.
|Geologists examine chemical and physical properties of specimens in laboratories, sometimes under controlled temperature and pressure. They may study fossil remains of animal and plant life or experiment with the flow of water and oil through rocks. Some geoscientists use two or three-dimensional computer modeling to portray water layers and the flow of water or other fluids through rock cracks and porous materials. A large variety of sophisticated laboratory instruments are used, including x-ray diffractometers, which determine the crystal structure of minerals, and petrographic microscopes for the study of rock and sediment samples. The locations and intensities of earthquakes are determined using seismographs, instruments which measure energy waves resulting from movements in the earth's crust.
Geologists also apply geological knowledge to engineering problems in constructing large buildings, dams, tunnels, and highways. Some administer and manage research and exploration programs, and others become general managers in petroleum and mining companies.
Geology and geophysics are closely related fields, but there are some major differences. Geologists study the composition, structure, and history of the earth's crust. They try to find out how rocks were formed and what has happened to them since their formation. Geophysicists use the principles of physics and mathematics to study not only the earth's surface, but its internal composition, ground and surface waters, atmosphere, and oceans as well as its magnetic, electrical, and gravitational forces. Both, however, commonly apply their skills to the search for material resources and to solve environmental problems.
Geologists and geophysicists often specialize; below is a short list of some of these specialties:
|Geoscientists may be found sampling the deep ocean floor or examining rock specimens from the Moon or Mars. But the work of most geoscientists is more "down to Earth." They work as explorers for new mineral and hydrocarbon resources, consultants on engineering and environmental problems, researchers, teachers, writers, editors, and museum curators as well as in many other challenging positions. They often divide their time among work in the field, the laboratory, and the office.|
|Field work usually consists of making observations, exploring the subsurface by drilling or using geophysical tools, collecting samples, and making measurements that will be analyzed in the laboratory. For example, rock samples may be X-rayed, studied under an electron microscope, and analyzed to determine physical and chemical properties. Geoscientists may also conduct experiments or design computer models to test theories about geologic phenomena and processes.
In the office, they integrate field and laboratory data and prepare reports and presentations that include maps and diagrams that illustrate the results of their studies. Such maps may pinpoint the possible occurrence of ores, coal, oil, natural gas, water resources, or indicate subsurface conditions or hazards that might affect construction sites or land use.
|Training, Other Qualifications, and Advancement|
|A bachelor's degree in geology or geophysics is adequate for entry into some lower level geology jobs, but better jobs with good advancement potential usually require at least a master's degree.
Over 500 colleges and universities offer a bachelor's degree in geology (or related fields). In addition, more than 300 univeristies award advanced degrees in geology or geophysics.
|In California it is difficult to find a university that doesn't offer a good undergraduate geology education. In the Cal State system, most schools offer Master's degrees (CSU Fullerton's program begins in Fall 2000). In the University of California, most schools offer both Master's and Doctoral degrees.
Geology is a physical science, and requires a solid background in mathematics, chemistry and physics. Computer modeling, data processing, and effective oral and written communication skills are important, as well as the ability to think independently and creatively (on the Graduate Record Examination, geologists typically obtain among the highest overall scores of any major). Those involved in fieldwork must have physical stamina.
At the community college level, the focus for students who wish to major in geosciences should be completing lower division requirements for the institution to which they would like to transfer. These will vary from place to place, but most schools will require at least two semesters of calculus (plus differential equations), two semesters of inorganic chemistry, and two semesters of physics. A student who finishes these courses before transferring will not only have an advantage in upper division classes, they will be able to spend their last two years of college concentrating on upper division geoscience courses.
Traditional geoscience courses emphasizing classical geologic methods and concepts (such as mineralogy, paleontology, stratigraphy, and structural geology) are important for all geoscientists. Those students interested in working in the environmental or regulatory field should take courses in hydrology, hazardous waste management, computer methods/modeling, environmental legislation, chemistry, fluid mechanics, and geologic logging. Some schools today allow undergraduates to choose a field of emphasis (such as surface processes, geochemistry, engineering geology, hydrogeology, or geophysics) for their Bachelor's degree.
|The job prospects for geologists depend upon their geologic specialty. The prospects for those in the petroleum or metallic minerals fields fluctuates with the price of the commodity. If gold or gas prices go up, exploration and development jobs increase; conversely, if prices drop, the jobs dry up. The job prospects for those in the environmental field (engineering geology, surface processes, hydrogeology, etc...) are growing rapidly.|
|The best advice for students today, as always, is to choose your major or field of interest according to your own likes and dislikes: if you choose according to salary expectations or job prospects, you may find yourself spending 1/3 of your life doing something you hate; if you choose a field you enjoy, however, you are more likely to excel in your career.|
|Some of the information presented here comes from the American Geological Institute's webpage. For more information go to: Careers in the Geosciences|