ANNOUNCEMENTS

1
ANNOUNCEMENTS

• First hour exam Wednesday 2/7 review session
  Monday 2/5 5.00 - 6.00, here
• Starting today, if you forgot your clicker you
  are in bad bad trouble (remember your phone,
  remember your clicker)
• NOTE THIS One of the chief complaints from last
  fall was, this class is too hard for a 100-level
  class. This class is as hard as a 400-level
  class, I just dont expect you to have ANY
  knowledge of geology to start with.

2
ANNOUNCEMENTS

• I need PINs from Ahumada, Barreda,Boykin,
  Buchanan, Civetta, Clausen, Dickason, Dunbar,
  Duvick, Escalante, Fears, Fix, Goffena, Gonzalez,
  Hunt, Hurst, Jimerfield, Jones, Krupoff, Magaldi,
  Mayon, Meehan, Moehr, Nelson, Rawls, Rumack,
  Sillin, Slade, Taylor, Watson
• Email me your PIN please

3
Clickers, please (just turn them on in general
when you get to class)
4
Muddiest point which concept on Monday made
the least sense to you?

• Depth of divergent-margin earthquakes
• Depth of transform fault earthquakes
• Strike and dip
• Strike-slip faults vs dip-slip faults
• It was all clear enough I could explain it to my
  group if I had to

5
TODAY

• More on faults
• normal, reverse, thrust, left lateral AND right
  lateral
• Terminology of earthquakes
• focus
• epicenter
• fault trace
• magnitude
• intensity
• The video if there is time, otherwise Friday
• New homework
• And, of course, clickers throughout!

6
Dip-slip faults
Tell the person next to you what kind of fault is
shown here (normal or reverse?)
7
Strike-slip fault
8
Tell your neighbor what kind of fault this is
(you are looking down on the rock, as if from an
airplane)
9
Turn on your clickers please
10
What sort of fault is this?(looking at a cliff
of rock in Chino Valley)

• Right-lateral strike slip
• Left-lateral strike slip
• Normal
• Reverse
• Thrust

11
What sort of fault is this?(looking at a cliff
of rock in Chino Valley)

• Right-lateral strike slip
• Left-lateral strike slip
• Normal
• Reverse
• Thrust

12
What sort of fault is this?(looking down from an
airplane)

• Right-lateral strike slip
• Left-lateral strike slip
• Normal
• Reverse
• Thrust

13
What sort of fault is this?(looking down from an
airplane)

• Right-lateral strike slip
• Left-lateral strike slip
• Normal
• Reverse
• Thrust

14
Some terms
15
HOMEWORK, due by 5 PM Monday (remember this ppt
is on the class website)

• Go to http//earthquake.usgs.gov/
• Click on the World (Magnitude 4) map.
• Chose an area in the world by clicking on it
• Choose an earthquake by clicking on it
• Keep clicking until you get the information about
  the earthquake, then (see next page)

16
HOMEWORK, due by 5 PM Monday, continued

• Send me an email with the
• location (and be precise -- what part of what
  country)
• date
• magnitude
• depth to the focus of the earthquake
• the plate tectonic setting what kind of
  boundary, or is it intra-plate? Use your
  textbook!
• AND
• (next page, please)

17
HOMEWORK, due by 5 PM Monday, continued

• In that same email,
• find one place on earth where an earthquake
  occurred along a subduction zone tell me where
  and when and depth
• find one place on earth where an earthquake
  occurred along a divergent zone tell me where
  and when and depth
• find one place on earth where an earthquake
  occurred along a transform fault tell me where
  and when and depth
• (next page, please)

18
HOMEWORK, due by 5 PM Monday, continued

• THE SUBJECT LINE OF YOUR EMAIL is GLG 112 (your
  last name)
• YOU MAY WORK WITH another person if you want

19
The video

• is a bit sappy, but has great information, so pay
  attention to
• the different hazards discussed
• the concept of seismic gap, and
• earthquake prediction
• EVERYTHING in class (including a video, hint,
  hint) is fair game for the exam