Syllabus (GEOLOGY)

Course Type: ME-6

Semester: 5

Course Code: BGELMEB36C

Course Title: Introduction to petrology

(L-P-Tu): 3-1-0

Credit: 4

Practical/Theory: Combined

Course Objective: Igneous petrology gives a knowledge regarding magma devitrification and also throws light upon upper mantle composition of earth interior. Metamorphic petrology deals with metamorphism of crustal material as a function of pressure and temperature.

Learning Outcome: Students learn to apply the knowledge to explore minerals in igneous rocks. Students can learn to observe the change of crustal substrate due to ever changing pressure temperature.

Theory:

Unit I: Introduction to petrology

1. Define Rock cycles

1. Introduction of Petrology; Definition of Rocks; Major sub-divisions of Petrology;

Unit II – Igneous petrology

Definition, composition and origin of magma and lava; Bowen’s reaction series; Classification of igneous rocks; Magmatic differentiation; Petrograpgy of granite, syenite, peridotite, anorthosite, gabbro, dolerite and basalt. Texture of igneous- Granitic texture, Porphyritic texture, Graphic texture and Glassy texture

Unit III –Sedimentary Petrology

Formation of sedimentary rocks; Erosion, transportation, Deposition, Consolidation and Cementation of sediments; Classification of sedimentary rocks, Sedimentary structures – Bedding and lamination, Current Bedding, Graded Bedding, Stratification, Lamination, Ripple Marks, Rain Prints, Mud cracks. Petrography of conglomerate, breccia, sandstone, shale and limestone

Unit IV- Metamorphic petrology

Definition of metamorphism; Agents and Types of Metamorphism; Types of metamorphism – Thermal or Contact metamorphism, Cataclastic metamorphism, Dynamothermal metamorphism, Plutonic metamorphism; Petrography of schists, gneisses, marble, charnockite and khondalite.

List of Practicals:

Megascopic and microscopic identification of igneous, sedimentary and metamorphic rocks as mentioned in theory.

Reference Books:

• Sedimetantary Petrology (IIIrd edition) – F. J. Pettijohn

• Igneous petrology – Mihir K Bose

• Metamorphic petrology – C B Rao

• Bangar, K.M., 2001. Principles of Engineering Geology.

• Dasgupta A. (2013). World Press: Introduction to Earth Science

• Mahapatra G. B. (2019): A Textbook of Geology