Changes

Usually the direction of strike and dip can be determined easily with left hand rule. They also can be measured accurately with Brunton Compass. Parts of Brunton Compass explained by Figure 2:

Usually the direction of strike and dip can be determined easily with left hand rule. They also can be measured accurately with Brunton Compass. Parts of Brunton Compass explained by Figure 2:

[[File:Brunton Compass.png|framed|center|Figure 2. The standard Brunton Compass<ref>http://www.geology.sdsu.edu/visualgeology/geology101/Geology101Labs/structureLab9.pdf</ref>]]

[[File:Brunton Compass.png|framed|center|Figure 2. The standard Brunton Compass<ref name=geo>http://www.geology.sdsu.edu/visualgeology/geology101/Geology101Labs/structureLab9.pdf</ref>]]

Brunton Compass can be used for:

Brunton Compass can be used for:

In determine the direction of strike and dip, there are four quadrants at Brunton Compass such as North East, North West, South East, and South West. Each of them have value 0-90 degree. For example in Figure 3, N40o W mean the direction of strike is 40o from North to West. 45o is amount of dip. The direction of dip always perpendicular with direction of strike, so we know the direction of dip is N50o E.

In determine the direction of strike and dip, there are four quadrants at Brunton Compass such as North East, North West, South East, and South West. Each of them have value 0-90 degree. For example in Figure 3, N40o W mean the direction of strike is 40o from North to West. 45o is amount of dip. The direction of dip always perpendicular with direction of strike, so we know the direction of dip is N50o E.

[[File:Direction of strike and dip.png|framed|center|Figure 3. Direction of strike and dip<ref>http://www.geology.sdsu.edu/visualgeology/geology101/Geology101Labs/structureLab9.pdf</ref>]]

[[File:Direction of strike and dip.png|framed|center|Figure 3. Direction of strike and dip<ref name=geo/>]]

=How to Measure Strike=  

=How to Measure Strike=