Geology-Metamorphic Rocks [GATE (Graduate Aptitude Test in Engineering) Geology & Geophysics]: Questions 1 - 6 of 11

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Question 1

Metamorphic Rocks
Structures and Textures

Appeared in Year: 2013

Question

MCQ▾

Mantle xenoliths are observed in ________.

Choices

Choice (4)Response

a.

Granite

b.

Kimberlite

c.

Pegmatite

d.

Granulite

Passage

A, B, C, D, E, F and G are minerals in a sample of metamorphic rock. The micro-texture of the assemblage is given below. A, D and G are porphyroblasts, B and C are coronas, E and F are inclusions.

A, B, C, D, E, F and G Are Minerals in a Sample of Metamorph …

Question 2 (1 of 2 Based on Passage)

Metamorphic Rocks
Sedimentary and Metamorphic Rocks with Tectonic Setting

Appeared in Year: 2013

Question

MCQ▾

Based on the micro-texture, select the oldest assemblage from the following.

Choices

Choice (4)Response

a.

A-D

b.

B-C

c.

E-F

d.

A-G

Question 3 (2 of 2 Based on Passage)

Metamorphic Rocks
Sedimentary and Metamorphic Rocks with Tectonic Setting

Appeared in Year: 2013

Question

MCQ▾

Select the appropriate metamorphic reaction from the following options.

Choices

Choice (4)Response

a.

b.

c.

d.

Question 4

Metamorphic Rocks
Concept of Metamorphic Facies

Question

MCQ▾

The correct sequence of metamorphic facies with increasing depth in a subduction zone is

Choices

Choice (4)Response

a.

Blue schist, Eclogite, Green schist

b.

Green schist, Blue schist, Eclogite

c.

Green schist, Eclogite, Blue schist

d.

Blue schist, Green schist, Eclogite

Question 5

Metamorphic Rocks
Concept of Metamorphic Facies

Appeared in Year: 2013

Question

MCQ▾

In high-grade metamorphism, biotite melting indicates

Choices

Choice (4)Response

a.

Rock hydration

b.

Rock cooling

c.

Rock dehydration

d.

Rock uplifting

Question 6

Metamorphic Rocks
Metamorphic P-T-T Paths and Their Tectonic Significance

Appeared in Year: 2014

Question

MCQ▾

The relative enrichment factors ( values) of sulphur isotopes of two sulphide minerals A and B in equilibrium with H2S at the same P-T-X conditions are and respectively. If A and B are in equilibrium under the same P-T-X conditions and δ34S value of A is , then the value of B is (Carry two marks each)

Choices

Choice (4)Response

a.

b.

c.

d.

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