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18-Geol-A4 Structural Geology: December 2019

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 True/False and Fill-in-the-Blank
  2. Question 2 Term Pairs
  3. Question 3 Shear Zones, Faulting and Mohr–Coulomb Stress Analysis
  4. Question 4 Three-Point Strike and Dip Problem

Start with Question 1 →

National Exams — December 2019 — 18-Geol-A4 Structural Geology. Three-hour, closed-book exam; a Casio or Sharp approved calculator, protractor, drawing compass and ruler are permitted. All questions (A–D) constitute the complete 100-mark paper.

Reference texts: Davis, Reynolds & Kluth, Structural Geology of Rocks and Regions, 3rd ed. — stress/strain tensors, Mohr-Coulomb failure, Anderson's theory of faulting, shear-zone kinematics; Fossen, Structural Geology, 2nd ed. — fold classification, shear-sense indicators, crystal-plastic deformation mechanisms; Marshak & Mitra, Basic Methods of Structural Geology — three-point strike/dip problems and structure-contour construction.

Check: Question A's header states "(30 Marks)" but the printed items (A1–A20 true/false + A21–A28 fill-in-blank, 1 mark each) sum to 28 marks — a 2-mark discrepancy in the paper's own header, treated here as a data typo rather than an omission.