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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

Fold analysis and cross sections

GLG510 Advanced Structural Geology

cross sections
Cross sections

Davis and Reynolds, 2000

slide9

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

slide10

Construction: Busk method

Marshak and Mitra

slide11

Construction: Busk method

Marshak and Mitra