GATE Geology Geophysics 2012 Paper Questions and Answers Part 4

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Q.42 Arrange the following formations sequentially from older to younger:

P. Sargur Schist

Q. Kajrahat Limestone

R. Cuddalore Sandstone

S. Umia Ammonite Bed

(A) P, S, Q, R (B) P, Q, R, S (C) P, Q, S, R (D) Q, S, P, R

Answer: (C) P, Q, S, R

Q.43 Which of the following statements is true?

(A) Transposition foliation is an indication of superposed folding

(B) Stratigraphic information is retained in transposition structures

(C) Transposition foliation develops parallel to axial plane of tight folds

(D) Fold closures can be well identified in transposition structures

Answer: (C) Transposition foliation develops parallel to axial plane of tight folds

Q.44 Match the items in Group I with those in Group II.

Match the Items in Group I with Group II
Match the items in Group I with Group II

Group I

Group II

A

Churching

1

Concrete gravity dam

B

Curtain grouting

2

Tunneling

C

Piping

3

Cement

D

Pozzolan

4

Earth dam

(A) P-2, Q-1, R-4, S-3

(B) P-4, Q-1, R-2, S-3

(C) P-2, Q-3, R-1, S-4

(D) P-1, Q-2, R-3, S-4

Answer: (A) P-2, Q-1, R-4, S-3

Q.45 A horizontally bedded sandstone outcrop exhibits planar cross-beds at a number of places. The dip directions of the forests of cross-beds at these locations are: . Find the mean palaeocurrent direction.

(A)

(B)

(C)

(D)

Answer: (D)

Q.46 Salinity of three different fluid inclusions in H2O-NaCl system is to be determined by “heating–freezing” experiments. The phase proportions of inclusions at room temperature are show

Salinity of three different fluid inclusions in H2O-NaCl sys …

Salinity of Three Different Fluid in H2O-NaCl System

The salinity can be determined by

(A) Heating of p, freezing of q

(B) Heating of q, freezing of r

(C) Freezing of p, heating of r

(D) Heating of all p, q and r

Answer: (B) Heating of Q, freezing of R

Q.47 Study the map below showing elevation of selected locations and outcrops of sedimentary beds.

Selected locations and outcrops of sedimentary beds

Selected Locations and Outcrops of Sedimentary Beds

Which of the following statements is correct?

(A) The beds dip easterly

(B) The beds dip westerly

(C) The beds dip southerly

(D) The beds are folded

Answer: (C) The beds dip southerly

Start Passage

Common Data Questions

Common Data for Questions 48 and 49:

The figures P and Q represent schematic binary phase diagrams for solid–melt and sub solidus relations in temperature (T)–composition (X) space.

Solid–melt and sub solidus relations in temperature

Solid–Melt and Sub Solidus Relations in Temperature

Q.48 Which of the following statements is true?

(A) P shows eutectic relation and Q shows high temperature limited solid solution

(B) Both P and Q show high temperature limited solid solution

(C) Both P and Q show eutectic relation

(D) P shows high temperature limited solid solution and Q shows eutectic relation

Answer: (B) Both P and Q show high temperature limited solid solution

Q.49 Choose the correct statement?

(A) Solvus occurs in both P and Q

(B) Solvus is absent in both P and Q

(C) Solvus occurs in P but not in Q

(D) Solvus occurs in Q but not in P

Answer: (C) Solvus occurs in P but not in Q

End passage

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