List of top Geology Questions asked in GATE Geology and Geophysics

Which one of the following optic signs is CORRECT for a mineral with the given centered optic axis figure?

Which one of the following is the correct arrangement of volcanics from the oldest to the youngest?

Which of the following sedimentary basins is/are producing hydrocarbon commercially?

Which of the following types of deposits is/are formed by fractional crystallization of magma?

Which of the following bivalves is/are swimmers?

Which of the following structures is/are associated with duplexes in fold-thrust belts?

Which of the following statements is/are CORRECT?

Which one of the following sequence of index mineral correctly represents the order of increasing metamorphic grade during regional metamorphism of siliceous dolomitic limestones ?

Which one among the following is the oldest horse genus?

Which one of the following textures is called the chalcopyrite disease?

The measured plate velocity is maximum (in International Terrestrial Reference Frame) at which one of the following locations on the Indian Plate?

Match the microstructures in Group-I with their characteristics in Group-II. Group-I Group-II

	Group-I		Group-II
P	Core-mantle	1	Radiating fibrous aggregate of K-feldspar with or without quartz
Q	Decussate	2	Large strained mineral grains surrounded by fine-grained, recrystallized grains
R	Spherulite	3	Inclusion trails in a porphyroblast curves into the matrix foliation by developing concave outward pattern
S	Millipede	4	Randomly oriented mineral grains dominated by crystal faces, such as in sheet silicates

Which one among the following is the least abundant sedimentary rock in the stratigraphic record?

A current of 2 A passes through a cylindrical rod with uniform cross-sectional area of 4 m² and resistivity of 100 Ω-m. The magnitude of the electric field (E) measured along the length of the rod in V/m is _____(in integer).

Which of the following rock structure is/are fold (S) ?

A confined aquifer with a uniform saturated thickness of 10 m has hydraulic conductivity of 10-2 cm/s. Considering a steady flow, the transmissivity of the aquifer in m²/day is (rounded off to one decimal place).

Assume heat producing elements are uniformly distributed within a 16 km thick layer in the crust in a heat flow province. Given that the surface heat flow and reduced heat flow are 54 mW/m² and 22 mW/m², respectively, the radiogenic heat production in the given crustal layer in uW/m3 is_____.(in integer).

Which one of the following lineations can be observed on a foliation with an attitude 210°, 40° NW?

Match the minerals in Group-I with the corresponding cleavage types in Group-II.

	Group-I		Group-II
P	Diopside	1	Cubic
Q	Galena	2	Octahedral
R	Calcite	3	Prismatic
S	Fluorite	4	Rhombohedral

The composition of which one of the following reservoirs closely matches with that of iron meteorites?

Which of the following Epochs belong(s) to the Quaternary Period?

A cylindrical sample of granite (diameter = 54.7 mm; length = 137 mm) shows a linear relationship between axial stress and axial strain under uniaxial compression up to the peak stress level at which the specimen fails. If the uniaxial compressive strength of this sample is 200 MPa and the axial strain corresponding to this peak stress is 0.005, the Young's modulus of the sample in GPa____ is (in integer).

The given figure shows the ray path of a P-wave propagating through the Earth. Choose the CORRECT P-phase corresponding to the ray path.

Which one or more of the following minerals shows O:Si ratio of 4:1 in its silicate structure?

Match the geophysical methods in Group-I with their associated physical properties in Group-II.

	Group-I		Group-II
P	Magnetic	1	Chargeability
Q	Gravity	2	Electrical conductivity
R	Magnetotelluric	3	Susceptibility
S	Induced Polarization	4	Density