Lecture
The Chandeleur Islands in Louisiana were nearly wiped out by Hurricane Ivan in 2004, (seen here) and further erased by Hurricane Katrina. Geologists understand coastal areas are ephemeral and constantly erode and move--and remain an extremely hazardous place to live (U.S. Geological Survey).
Previously you learned about the environmental problems facing the world, and the purpose of science. This section will help you understand what geologists do to understand the Earth, and where geologists are employed. Second, you will learn what scientific principles (or theories) geologists use to understand how the Earth functions. This Lecture is organized into three sections as shown in the three tabs at the top of the page:
- Geologists: A look at how geology is defined, what geologists can do, how they impact our lives and economy, and where geologists can be found.
- Geoscience: The science and history of geology is explained in more detail.
- Key Principles: Review the scientific principles that unite geologic research.
While the general public may think geologists are only of value for finding diamonds and oil, geologists are central to many important timely issues. Principles of geology are central to understanding the causes of natural disasters. Demand for natural resources requires good geologists. Pollution cleanup almost always requires geologists.
Read the following story from National Geographic News which recounts the work of geologists working on the recent oil spill clean-up in the Gulf of Mexico.
- Oil Found in Gulf Beach Sand, Even After Cleanups: Long-lasting, hidden oil from the Gulf spill poses risk, experts say. (Christine Dell’Amore)
Please read this story and relate (1) how do the geologists (generally) study natural systems; (2) does the public always follow the expertise of geologists? Post your answer to this question in the class Chat Room. This is a voluntary chat room posting and will not be graded.