Igneous and Metamorphic Petrology-Types and Agents of Metamorphism [IFS (Forest Services) Geology]: Questions 1 - 4 of 4

Choose Programs:

đź“ą Video Course 2024 (68 Lectures [32 hrs : 24 mins]): Offline Support

Rs. 200.00 -OR-

1 Month Validity (Multiple Devices)

Preview All LecturesDetails

🎓 Study Material (1206 Notes): 2024-2025 Syllabus

Rs. 1000.00 -OR-

3 Year Validity (Multiple Devices)

Topic-wise Notes & SampleDetails

🎯 469 Questions (& PYQs) with Full Explanations (2024-2025 Exam)

Rs. 900.00 -OR-

3 Year Validity (Multiple Devices)

CoverageDetailsSample Explanation

Help me Choose & Register (Watch Video) Already Subscribed?

Question 1

Appeared in Year: 2017

Describe in Detail Subjectiveâ–ľ

What metamorphic structures and textures a rock of basaltic composition would develop during progressive regional metamorphism?

To explain the structure and textures of basaltic rock formation during progressive regional metamorphism

(Paper-II)

Edit

Explanation

Structure and Textures of Basaltic Rock Formation

  • The directed pressure and heat act together in presence of migrating hydrothermal fluids, to form the metamorphosed rocks. This kind of metamorphism is called the regional or dynamo thermal metamorphism.
  • The regional metamorphism takes place at great depths, such as in roots of Fold Mountains where te…

… (214 more words) …

Question 2

Appeared in Year: 2021

Describe in Detail Subjectiveâ–ľ

Write a note of agents of metamorphism. (Paper-2)

Edit

Explanation

Metamorphism- the term metamorphism comes from the Greek word, which has literal meaning “change of form” .

In petrology the metamorphism means change in the mineral composition, texture, of pre-existing rocks. This process occurs dominantly in solid state.

Example of Metamorphic rocks- slate, phyllite, gneiss, mylonite, amphibolite, greenstone etc.

M…

… (348 more words) …

Question 3

Appeared in Year: 2020

Describe in Detail Subjectiveâ–ľ

Define the Prograde and Retrograde metamorphism. Discuss various mineral assemblages formed due to these processes′ basic igneous rocks. (Paper-2)

Edit

Explanation

Metamorphism is a response to changes in temperature and/or pressure over time from some initial state. Geologists refer to pressure – temperature – time relationships, which are abbreviated as P - T - t. Prograde metamorphism results from increasing temperature and/or pressure conditions over time. Sufficient time is required so that mineral assem…

… (178 more words, 3 figures) …

Question 4

Appeared in Year: 2022 (IAS)

Describe in Detail Subjectiveâ–ľ

What are the different type of regional metamorphism. Describe the characteristics differences in the metamorphic rocks which result from these. (Paper 2)

Edit

Explanation

Metamorphism is the sum of all changes that take place in a rock as a result of changes in the rock՚s environment; that is, changes in temperature, pressure (directed as well as lithostatic) , and composition of fluids. The changes in the rock may be textural, mineralogical, chemical, or isotopic. These changes proceed at varying rates, so time is …

… (403 more words) …