Determine the type of stress necessary to produce each of the ...

[SGallaher96]

Determine the type of stress necessary to produce each of the following geologic regions/features. (Note: Some choices will be used more than once.)
 
  A) Shear
  B) Tension
  C) Compression
 
  1) Basin and Range province
  2) San Andreas Fault
  3) Grand Teton Mountains
  4) Appalachian Mountains
  5) Dakota Hogback

Question 2

Over the course of the last couple of centuries, major businesses all over the world have spent a great deal of time and money searching for and studying structural geologic features in order to find deposits of petroleum.
 
  How would these structures trap the substances these companies are interested in?
  What will be an ideal response?

[Swizqar]

Answer to Question 1

Answers: 1) B 2) A 3) B 4) C 5) C

Answer to Question 2

Answer: Oil companies are searching for or have searched for structural features such as domes, anticlines, and inclined faults. These features can act as petroleum traps. For example, petroleum will migrate along permeable rock layers in an anticline, making its way up the layer because it is less dense. Once the petroleum reaches the top of the fold, the overlying layer may act as an impermeable boundary, not allowing any further migration upward and trapping the product.

[SGallaher96]

Thanks for the timely response, appreciate it

[ryhom]

Gracias!