BGYCT-135 EM 2026 SOLVED ASSIGNMENT

Description

Tutor Marked Assignment

PETROLOGY

Course Code: BGYCT-135

Assignment Code: BGYCT-135/TMA/2026

Maximum Marks: 100

Note: *Attempt all questions. The marks for each question are indicated against it. Write all answers in your own words; do not copy from the course material. *Write the answers in about 250 words for 5 marks questions and not exceeding 500 words for 10 marks questions.

Part A.

1.Write short notes on the following:

a) Crystallisation Behaviour of H2O System (5)

b) Tabular classification of igneous rocks (5)

2.Discuss the different types of textures found in igneous rocks with the help of neat well labelled diagrams. (10)

3.Explain the chemical and mineralogical composition of magma in detail. (10)

4.Discuss the megascopic and microscopic characters of rhyolite with the help of neat well labelled diagrams. (10)

5 Discuss the megascopic and microscopic characters of gabbro with the help of neat well labelled diagrams. (10)

Part B

6.Discuss the classification of sedimentary rocks based on size and shape of grains. (10)

7.Explain the concept of metamorphic facies. (10)

8.Discuss the factors that affect metamorphism. (10)

9.Write short notes on:

a) Particle morphology (5)

b) Packing of grains (5)

c) Regional metamorphism (5)

d) Palimpsest texture