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Geology Study Notes: Orientation of Planes, Folds, and Fault Contacts, Slides of Geology

Alagappa UniversityGeology

An overview of geological concepts related to the orientation of planes, folds, and fault contacts. Topics include synclines and anticlines, trends and plunges, and fault contacts of various types. Useful for university students studying geology or earth sciences.

Typology: Slides

2012/2013

Uploaded on 07/22/2013

sangeeta
sangeeta 🇮🇳

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Orientation of a Plane Strike and dip on a map
North
34
38
28
30
Folds
• Syncline
– (concave up)
• Anticline
– (concave down)
Domes and Basins Trend and Plunge
• Used for linear features
• Trend = Azimuth of a line
• Plunge = Inclination of a line
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7

Orientation of a Plane Strike and dip on a map North

34

38

28

30

Folds

  • Syncline
    • (concave up)
  • Anticline
    • (concave down)

Domes and Basins Trend and Plunge

  • Used for linear features
  • Trend = Azimuth of a line
  • Plunge = Inclination of a line

8

Plunging Fold Trend

Plunging Folds

Does the arrow point at a syncline or anticline?

A. Syncline B. Anticline C. Neither

Sheep Mountain Anticline, WY Fault Contacts

  • Normal
  • Thrust, reverse
  • Strike-slip