Geology-Primary and Secondary Structures [GATE (Graduate Aptitude Test in Engineering) Geology & Geophysics]: Questions 1 - 5 of 5

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Passage

The following figure gives Mohr envelope for a rock and Mohr circle in a particular stress condition.

Fracturing occurs when the Mohr circle touches the Mohr envelope at B.

Fracturing Occurs when the Mohr Circle

Question 1 (1 of 2 Based on Passage)

Question MCQ▾

What is the dihedral angle?

Choices

Choice (4)Response

a.

b.

c.

d.

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Question 2 (2 of 2 Based on Passage)

Question MCQ▾

What type of fractures will develop in the rock?

Choices

Choice (4)Response

a.

Conjugate shear fractures

b.

Hybrid extension-shear fractures

c.

Columnar fractures

d.

Extension fractures

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Question 3

Question MCQ▾

A sandstone bed dipping has an outcrop width of 20 m in a flat terrain. What is the true thickness (in m) of the bed?

Choices

Choice (4)Response

a.

20

b.

10

c.

30

d.

5

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Question 4

Question MCQ▾

A horizontally bedded sandstone outcrop exhibits planar cross-beds at a number of places. The dip directions of the foresets of cross-beds at these locations are: . Find the mean palaeocurrent direction.

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 5

Appeared in Year: 2014

Question MCQ▾

The geological map given below shows beds in a normal stratigraphic order. Which one of the following statements is true in respect of features near locations P and Q?

(Carry two marks each)

The Geological Map Given

Choices

Choice (4)Response

a.

Q is an anticline and P is a syncline

b.

P is an anticline and Q is a syncline

c.

P is an outlier and Q is an inlier

d.

Q is an outlier and P is an inlier

Edit