The Geologic Map

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Every individual who has ever been in a road trip knows how to use the very popular road maps and street maps. Yet, this statement might be partially untrue since the advent of technology might have rendered the traditional maps of little use. Nowadays people need only buy a device to plan their route and show them the right way without having to worry about reading the map wrong. Technology has certainly surpassed the traditional map which is nowadays another page in a geography book. However, there are some maps that are still being used in their traditional form and those are the geologic maps.

A geologic map is a lesser used map, which is of primary interest to a specialist. A geologic map is a map designed to reveal geological features such as rock units and geologic strata. These features are revealed by special colors and symbols and a geologic map will also show the exposure of these features at the surface. Strike and dip are on the other hand used to reveal bedding planes and other structural features, including folds, faults or foliations.

The history of the geologic map is thought to have started many centuries ago. The oldest geologic map is known to have been drawn in 1150 BC and it revealed the gold deposits in Egypt. There are different views towards the geologic maps all over the world and in some places such as the United States, they are often superimposed over a topographic map. They would however feature color masks and letter symbols to show the specific rock or geologic structure. As one can see there are many different types of maps that can be designed for very specific purposes and which are certainly intended for a specific audience and the geologic map is one of them.