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18-Geol-A3 Sedimentation and Stratigraphy: December 2018

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

  1. Question 1 Carbonate Rock Classification — Dunham/Embry & Klovan and Folk
  2. Question 2 Sandstone Classification Scheme (QFL)
  3. Question 3 Paleocurrent Indicators and Rose-Diagram Patterns
  4. Question 4 Carbonate Platform Types, Energy Distribution and Sediment Effects
  5. Question 5 Evolution of Textural Maturity with Kinetic Energy
  6. Question 6 Conglomerate and Diamictite — Classification by Clast Stability and Fabric Support
  7. Question 7 Breccia — Definition and Genetic Processes
  8. Question 8 Importance of Grain-Size Data — Petroleum, Groundwater and Process Interpretation
  9. Question 9 Bedded vs. Nodular Chert — Genesis and Silica Source
  10. Question 10 Diagenesis and Its Effect on Reservoir Quality
  11. Question 11 Deltaic System Components and Best Reservoir Unit
  12. Question 12 Framework Grains Diagnostic of Sediment Provenance
  13. Question 13 Facies and Walther's Law
  14. Question 14 Vertical and Lateral Formation Boundaries (Non-Tectonic)
  15. Question 15 Parasequence Sets — Progradational, Aggradational and Retrogradational
  16. Question 16 Criteria for Biostratigraphically Useful Fossils
  17. Question 17 Stratigraphic Terminology — Diastem, Microfacies, Assemblage Biozone, Polarity Zone
  18. Question 18 Depositional Sequence and Systems Tracts
  19. Question 19 Sedimentary Basins and Tectonic Regimes (Matching)

Start with Question 1 →

EGBC National Exam — Geological Engineering, 18-Geol-A3, Sedimentation & Stratigraphy, 2018-Dec. Closed book, no calculator, 3 hours. Part 1: Sedimentology (Questions 1–12, 5 marks each) instructs "Answer questions 1 and 2, and any other 6 questions from the remaining 10 questions (i.e., questions 3–12)" for 40 marks total. Part 2: Stratigraphy and Sedimentary Basin Analysis (Questions 13–19, 5 marks each) instructs "Answer five of the following seven questions" for 25 marks total (65/65 maximum).

Reference texts: Nichols, Sedimentology and Stratigraphy, 2nd ed. (depositional environments, facies models, carbonate platforms, sequence stratigraphy, biostratigraphy and correlation); Boggs, Petrology of Sedimentary Rocks, 2nd ed. (sandstone and carbonate classification, weathering, diagenesis, grain-size analysis); Bjorlykke, Petroleum Geoscience: From Sedimentary Environments to Rock Physics, 2nd ed. (basin classification, reservoir facies).