Geological Maps

• Geological Maps

  • maps that show geological features of the place.
• Types of Geological Maps:

  1. Structural Map - maps that show folds, faults and other geologic structures in an area.
  2. Cross-section Map - shows the distribution, nature and the age of the rock in the area or the place.
  3. Topographic Map - a record of a land area giving the exact position of the place and elevation of both natural and manmade features.
• Contour Lines

  • these lines are connected and they are the ones that can determine the elevation and formation of the place in the map.
• General Rules for Contour Lines:

  1. never cross to each other
  2. form a circle on the top of mountain and hills
  3. form closed circle are marked with straight lines indicate a depression.
  4. creates aa V shape when it crosses the valley or stream
  5. The spacing of contour lines determined how steep the slope in the place.
• Generally found in a geological map:

  • Map - picture of distribution
  • Explanation - descriptions
  • Scale - size of geologic feature shown that is related to the actual size
  • Symbols - shows diagrams, names, etc.
  • Correlation Map Units - shows the relative age of the material found in the map.