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Fold analysis and cross sections

Fold analysis and cross sections. Marshak and Mitra. Marshak and Mitra. Beta diagram: fold axis at intersection of bedding planes. Marshak and Mitra. Marshak and Mitra. Marshak and Mitra. Marshak and Mitra. Cross sections. Davis and Reynolds, 2000.

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Fold analysis and cross sections

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  1. Fold analysis and cross sections GLG510 Advanced Structural Geology

  2. Marshak and Mitra

  3. Marshak and Mitra

  4. Beta diagram: fold axis at intersection of bedding planes Marshak and Mitra

  5. Marshak and Mitra

  6. Marshak and Mitra

  7. Marshak and Mitra

  8. Cross sections Davis and Reynolds, 2000

  9. Basic steps in the preparation of a geologic cross section: • Choose appropriate line of section • Produce topographic profile along it. • Transfer marker attitudes (contacts and within units) • Correct for apparent dip in line of section (if line <75 degrees from strike) • Draw units; maintain stratigraphic thickness where possible; use deformation patterns observed from field to guide interpretation. Continue lines into air and below ground Davis and Reynolds, 2000

  10. Construction: Busk method Marshak and Mitra

  11. Construction: Busk method Marshak and Mitra

  12. Construction: Kink band method Marshak and Mitra

  13. Construction: Kink band method Marshak and Mitra

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