Meeting place: Geological Museum 102 (Haller Hall)
Meeting time: MWF, 10:00-11:00
Figure: Schematic cross-section of the Earth, including the recently discovered "innermost inner core" (small red sphere at center). It has been known for decades that the Earth has a liquid outer core and a solid inner core, both primarily made up of iron. Prof. Dziewonski and seismology graduate student Miaki Ishii used 30 years of earthquake data to detect this small sphere (300-km in diameter) through which seismic waves travel differently than they do through the rest of the inner core. The innermost inner core may be leftover from the Earth's formation 4.6 billion years ago, which would make it the oldest unaltered matter in our planet.
An introduction to Earth science designed for concentrators in geological,
environmental, and geophysical sciences. Origin of the Earth, its age and its
evolution with an emphasis on the processes that shaped our planet. The theory
of plate tectonics is used as a broad framework to explain the occurrence and
distribution of earthquakes, volcanoes and mountains, and to explore the
history of the Earth's surface. Labs and the weekend field trip familiarize
students with rock types, geological features, and maps, and expose them to
how geologists infer processes from the rock record. Three hours of laboratory
work per week and two day-long field trips on separate weekends are
Also appropriate for non-EPS concentrators who desire a comprehensive introduction to Earth science; this course may be substituted for the Science A requirement.
Catalog Number: 0918; Exam Group: 3