BGYCT-135 EM 2024 SOLVED ASSIGNMENT

Description

Tutor Marked Assignment
PETROLOGY
Course Code: BGYCT-135
Assignment Code: BGYCT-135/TMA/2024
Maximum Marks: 100
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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) Extraterrestrial Rocks (5)
b) Phase Rule (5)
2. Discuss the different types of textures found in igneous rocks with the
help of neat well labelled diagrams.
(10)
3. Describe various mechanisms of magmatic differentiation. (10)
4. Discuss the megascopic and microscopic characters of granite and
basalt with the help of neat well labelled diagrams.
(10)
5. Discuss the IUGS Classification of Igneous rocks. (10)
Part B
6. Explain briefly the secondary sedimentary structures. (10)
7. Describe palimpsest textures present in the metamorphic rocks. (10)
8. Discuss the classification of sedimentary rocks based on size and
shape of grains.
(10)
9. Write short notes on:
a) Lithification and diagenesis (5)
b) Ripple marks (5)
c) Zones of metamorphism (5)
d) Metamorphic facies