How do you read a geologic map?


How do you read a geologic map?

Geologic Mapping:

An important job for geologists is to make geologic maps. These maps can be as small as an acre and as large as an entire continent, and represent the rocks found over the surface of the landscape. A geologist makes the map by surveying the landscape for outcroppings of rock that they can describe and by taking measurements of the orientations of rocks. Because the landscape is not all rock, the geologist needs to make inferences on how rock layers are connected on the landscape.

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All geologic maps have the same basic structure: the map itself, a scale, an orientation, latitude and longitude, and a legend. The scale is used to...

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Understanding & Interpreting a Geologic Map


Chapter 2 / Lesson 7

Discover how to understand and interpret a geological map, which shows an area's geological features. Explore more about the characteristics of geological maps, see the purpose of colors and letters, examine lines and symbols, and understand the key.

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