SO461, Geological Oceanography

Quiz 1, Spring 2006

 

(8 pts)  Fill in the table below to create a geologic time scale:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(4) Plot the following two planes using tracing paper on the stereonet:

 

 

(2) Do the two planes intersect? If so, mark the intersection on the stereonet and determine the orientation in space of their intersection.

 

 

 

Intersection: bearing is 4, dip 20


(3)   (The grid below is every 15 degrees.)

oWhich of the three great circles below has the smallest dip?  That on the far left

oWhich (if any) of the great circles dips to the SE?  That on the far right

oDo the three planes share any characteristics?   They all have the same strike

 

 

(3) What is the approximate dip and strike of the plane represented by the great circle below?   N45W, 30 SW

 

Could one of the points plotted on this diagram be the pole to the plotted great circle?  If so, which one?  If not, roughly where would the pole be?   Yes, the second one down from the top.