National Institute of Technology Rourkela

राष्ट्रीय प्रौद्योगिकी संस्थान राउरकेला

ଜାତୀୟ ପ୍ରଯୁକ୍ତି ପ୍ରତିଷ୍ଠାନ ରାଉରକେଲା

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Syllabus

Course Details

Subject {L-T-P / C} : ER5371 : Structural Geology Laboratory { 0-0-3 / 2}

Subject Nature : Practical

Coordinator : Bhaskar Kundu

Syllabus

Module 1 :

Module 1: Outcrop Patterns and Structure Contours - Trigonometric solutions, Structure contours, The three-point problem, Determining outcrop patterns with structure contours.

Module 2: Interpretation of Geologic Maps and structures - Determining exact attitudes from outcrop patterns, stratigraphic thickness in flat terrain and on slopes, Determining the nature of contacts, Constructing a stratigraphic column, Structure sections of folded layers and intrusive bodies, Drawing a topographic profile.

Module 3: Stereographic Projection - Pole of a plane, Line of intersection of two planes, True dip from strike and apparent dip, Rotation of lines, Fold classification based on dip isogons, Outcrop patterns of folds, Beta (ß) and Pi (p) diagrams, Determining the orientation of the axial plane.

Module 4: Dynamic and Kinematic Analysis of Faults - Measuring slip, Rotational (scissor) faulting, Map patterns of faults, Timing of faults, Dynamic analysis, Kinematic analysis, Structural synthesis of the Bree Creek, Common errors in geologic reports.

Module 5: Brittle Failure and Strain Measurement - Quantifying two-dimensional stress, The Mohr diagram, The Mohr circle of stress, The failure envelope, The importance of pore pressure, Longitudinal strain, Shear strain, The strain ellipse, Three strain fields, The coaxial deformation path and strain ellipse, Noncoaxial strain, The noncoaxial total strain ellipse, Strain in three dimensions, Quantifying the strain ellipsoid.

Course Objective

1 .

Understanding Geological Mapping and Structural Contours – Develop proficiency in using trigonometric solutions, structure contours, and outcrop pattern analysis for structural interpretation.

2 .

Interpreting Geologic Maps and Structural Relationships – Gain expertise in measuring rock attitudes, stratigraphic thickness, and constructing cross-sections and stratigraphic columns.

3 .

Applying Stereographic Projection Techniques – Use stereographic projection to analyze structural orientations, fold classifications, and axial plane orientations.

4 .

Conducting Fault Kinematics and Structural Synthesis – Perform dynamic and kinematic fault analysis, including slip measurements and fault timing assessments.
Analyzing Stress and Strain in Geological Structures – Utilize Mohr diagrams, strain ellipses, and failure criteria to evaluate brittle deformation and strain in three dimensions.

Course Outcome

1 .

1. To develop skills in geological mapping, structure contouring, and outcrop analysis.
2. To interpret geologic maps and create accurate cross-sections for structural investigations.
3. To apply stereographic projection techniques for structural geology problem-solving.
4. To analyze faults dynamically and kinematically, integrating structural synthesis.
5. To perform stress and strain analysis for understanding rock deformation and failure.

Essential Reading

1 .

S. K. Ghosh, Structural Geology: Fundamentals and modern development, Pergamon , 1st edition, 1993

2 .

N.W Gokhale, A Manual Of Problems In Structural Geology, CBSPD

Supplementary Reading

1 .

John Waldron and Morgan Snyder, Geological Structures: a Practical Introduction, University of Alberta Library

Journal and Conferences

2 .

Platt, J. P., & Vissers, R. L. M. (1980). Extensional structures in anisotropic rocks. Journal of Structural Geology, 2(4), 397-410.

1 .

Shirole, D., Walton, G., & Hedayat, A. (2020). Experimental investigation of multi-scale strain-field heterogeneity in rocks. International Journal of Rock Mechanics and Mining Sciences, 127, 104212.