GATE GG-1 year:2017 PYQs & Answers — Page 3

Questions 21–30 of 65. Imported answers require independent review unless marked reviewed.

Topic practice 65 questionsPage 3 of 7

A seismic gap refers to a

Your answerChoose one option.

time gap between two great earthquakes.

distance gap between the epicenters of two great earthquakes.

segment of an active belt where a historical great earthquake has not occured.

wide gap in the earth created by a great earthquake.

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The travel time difference between the arrival times of a shear wave (S) and primary wave (P) observed on a seismogram recorded at an epicentral distance of 100km from a near surface earthquake is __________ s. (Assume the average P and S wave velocities to be 6.0 km/s and 3.5 km/s, respectively).

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The percentage increase in P-wave velocity (km/s) across the Mohorovicic discontinuity from the lower crust to the upper mantle beneath a craton is approximately ______________ (%).

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Which one amongst the following logging tools has the largest depth of investigation?

Your answerChoose one option.

Density

Laterolog 3

Laterolog 8

Neutron

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The most abundant radioactive isotope in the continental crust is

Your answerChoose one option.

⁴⁰K

²³²Th

²³⁵U

²³⁸U

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Stylolitic foliation developed during diagenetic processes is typically

Your answerChoose one option.

parallel to bedding.

perpendicular to bedding.

oblique to bedding.

vertical.

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A coal seam with an attitude 090°, 50°S outcrops at an elevation of 1400 m in an area that has flat topography. A vertical exploratory drill hole will intersect the seam

Your answerChoose one option.

north of the outcrop at elevations greater than 1400 m.

north of the outcrop at elevations less than 1400 m.

south of the outcrop at elevations less than 1400 m.

south of the outcrop at elevations greater than 1400 m.

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Earthquakes result in the formation of which one of the following features?

Your answerChoose one option.

Pyroblast

Porphyroclast

Pseudotachylite

Pressure shadow

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In a bilaterally symmetrical brachiopod fossil, the angle between the hinge line and the median line changes to 45° after deformation. The shear strain observed in the deformed fossil is _________.

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The empirical probability distribution of gold (Au) grades shows a unimodal distribution with mode = 2 g/t, median = 3 g/t, and mean = 5 g/t. This probability distribution is

Your answerChoose one option.

positively skewed.

negatively skewed.

normally distributed.

platykurtic.

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GATE GG-1 year:2017 PYQs

Question 21

Question 22

Question 23

Question 24

Question 25

Question 26

Question 27

Question 28

Question 29

Question 30