GATE GG-1 topic:geology PYQs & Answers — Page 58

Questions 571–580 of 650. Imported answers require independent review unless marked reviewed.

The figure below is a schematic section showing the initial stages of development of a thrust fault (FF′) having a typical ramp and flat geometry, with the thrust sheet being transported from east to west. With respect to the synform and antiform created in Stage 2, which one of the options below is CORRECT for the next increment of movement on the fault plane?

Diagram for Geology and Geophysics question 41

Your answerChoose one option.

The synform and the antiform will both move westward.

The synform will remain in position, while the antiform will grow in amplitude.

Both synform and antiform will grow in amplitude.

The geometry will remain unchanged.

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Which one of the following is the CORRECT chronological sequence for Iron formations?

Your answerChoose one option.

Algoma type > Superior type > Rapitan type > Minette type

Superior type > Algoma type > Rapitan type > Minette type

Rapitan type > Minette type > Algoma type > Superior type

Algoma type > Minette type > Superior type > Rapitan type

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Assertion (a): High-temperature, low-pressure metamorphism occurs on the over-riding plate near convergent plate margins. Reason (r): Partial melting in the mantle wedge generates magmas that rise to form the arc.

Your answerChoose one option.

(a) is true but (r) is false.

(a) is false but (r) is true.

Both (a) and (r) are true and (r) is the correct reason for (a).

Both (a) and (r) are true and (r) is not the correct reason for (a).

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Two coeval primary aqueous biphasic fluid inclusions, X (liquid-rich) and Y (vapor-rich), occur in the same grain of the host mineral. Which one of the following situations most likely indicates boiling of the fluid?

Your answerChoose one option.

X homogenizes to liquid and Y homogenizes to vapor at different temperatures.

Both homogenize to liquid at the same temperature.

Both homogenize to vapor at the same temperature.

X homogenizes to liquid and Y homogenizes to vapor at the same temperature.

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During bench blasting in a quarry, 50 kg of an explosive with a yield of 5 MegaJoule/kg is required to break 100 m

of marble. In this case, the energy expended in breaking a unit volume of marble in MegaNewton/m

would be ____________.

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The stretch lineation on the axial plane (S

) of a reclined fold on the S

foliation makes an angle of 30° with the S

intersection lineation. The rake of the stretching lineation on the axial plane in degrees is ____________.

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A basic magma has an initial nickel concentration of 300 ppm. Olivine crystals from this magma by equilibrium crystallization (Case I) or fractional crystallization (Case II). Then, the absolute value of the difference between the nickel concentrations of the liquids remaining after 25% crystallization in these two cases is ____________. (Use K

olivine-melt = 10).

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The difference in the number of faces in forms and in the holosymmetric class of the isometric system is ____________.

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An inclined cylindrical confined aquifer has coefficient of permeability of 40 m/day. The horizontal distance between two vertical wells penetrating the aquifer is 800 m. The water surface elevations in the wells are 50 m and 45 m above a common horizontal datum. The absolute value of Darcy flux through the aquifer is ____________ m/day.

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The mass and volume of a natural soil sample are 2.1 kg and 1×10

, respectively. When fully dried, the mass of the soil sample becomes 2 kg without any change in volume. Assuming the specific gravity of soil particles to be 2.5, and water density of 1000 kg/m

, the degree of saturation of the natural soil sample is ____________%.

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GATE GG-1 topic:geology PYQs

Question 41

Question 42

Question 43

Question 44

Question 45

Question 46

Question 47

Question 48

Question 49

Question 50