Department
of Earth Science |
Northeastern
Illinois University
INTRODUCTION
TO EARTH SCIENCE
ESCI
121, Fall
2006
Daily
Objectives #20 (November 2, 2006)
Dr. Sanders
By the end of today’s class, you should be able to do the
following:
* Put maps of earthquake foci into a grouping based on patterns
of distribution and depth. For each group, explain what all the
maps in that group have in common.
* Explain the relationship between patterns of earthquake distribution
and depth with type of plate boundary:
> divergent
> transform
> convergent with subduction
(note: using the earthquakes, tell which plate is the subducting one)
> convergent with no subduction
* Identify areas that have earthquakes, but are not located on
boundaries, and explain why earthquakes occur in these places.
* Given a map of an unknown area showing numerous earthquakes, suggest
what the plate tectonic setting might be.
Some possible examples:
> A
map showing parallel bands of deep, moderate, and shallow focus
earthquakes
> A map showing
mostly shallow focus earthquakes, with a few moderate or deep ones, in
a line
> A map showing
shallow focus earthquakes randomly distributed with no
discernible lines
> A map
showing shallow focus earthquakes in well-defined lines--particularly
if the area is located in the mid-ocean
* Make a list of all the places on the earth where water can be found.
© 2006 Laura L. Sanders. Last updated November 2, 2006.