When it comes to maps, there are many different types. In one case, a geologic map has nothing to do with travel. For, this type of map refers locations of interest based on geological aspects of different areas, such as that of fossils and rocks. As such, this type of map differs greatly from that of a road atlas or maps used by GPS systems.
In geological maps, geologic strata and data are shown by colors, symbols and other markings which are often measured from the surface. For example, data such as folds, faults, lineages and plunges are often marked with a dip or strike. In most cases, objects marked with dips and strikes tend to render a three dimensional aspect on geographical maps.
Identifying and marking the surface area of the object can often be complicated. The use of contour lines can often help in illustrating the subsurface, surface and topographical areas. Whereas, when making such calculations, it is important to consider whether or not the object had been exposed to topsoil, backfill, bedrock or other related factors which could have effected the overall surface area.
Currently, the oldest geological map known to exist is that of the Turin Papyrus which has been well preserved since being found. Being a map that dates back to 1150 BCE, it was an important archaeological, geographical, geological and historical find. For, the map depicted stone and gold deposits from different areas of Egypt. In fact, it is believed that the map may have even been integral in the building of the pyramids.
In 1771, another geological map of importance was found which shows parts of Auyergne. In this case, the map was made out of basalt with the mapmakers having used balls, prisms and other items to denote different locations which were rich in various types of rock formations. While there were most likely maps created between 1150 BCE and 1771, this map is still considered the first of its kind to be found in the modern era.
The first of these maps to be produced in the United States was produced by William Maclure in 1809. Maclure, undertook the task of taking a geological survey of the country in 1807. During the survey, Maclure traveled and mapped each state and geological aspects of each which were part of the Union at that time.
The journey which Maclure took to survey and research different areas of the United States took the surveyor across the Allegheny mountains more than fifty times. One outcome of these crossings, a map denoting findings of five classes of rocks which now are believed to only exist in the Eastern states of what is now present-day America.
While almost all United States geological maps are similar in comparison to that of the first one, a number are now overlaid on other topographical maps with colors, letters and symbols to mark different geographical aspects of the area. While symbols and letters are often used to notate different areas of the surface, faultlines and fossil findings, color is almost always used to denote the bedrock's exposure to the surface. As such, geological maps are often now used in earthquake sciences, marine biology, history, topology and other subsets of these areas.
In geological maps, geologic strata and data are shown by colors, symbols and other markings which are often measured from the surface. For example, data such as folds, faults, lineages and plunges are often marked with a dip or strike. In most cases, objects marked with dips and strikes tend to render a three dimensional aspect on geographical maps.
Identifying and marking the surface area of the object can often be complicated. The use of contour lines can often help in illustrating the subsurface, surface and topographical areas. Whereas, when making such calculations, it is important to consider whether or not the object had been exposed to topsoil, backfill, bedrock or other related factors which could have effected the overall surface area.
Currently, the oldest geological map known to exist is that of the Turin Papyrus which has been well preserved since being found. Being a map that dates back to 1150 BCE, it was an important archaeological, geographical, geological and historical find. For, the map depicted stone and gold deposits from different areas of Egypt. In fact, it is believed that the map may have even been integral in the building of the pyramids.
In 1771, another geological map of importance was found which shows parts of Auyergne. In this case, the map was made out of basalt with the mapmakers having used balls, prisms and other items to denote different locations which were rich in various types of rock formations. While there were most likely maps created between 1150 BCE and 1771, this map is still considered the first of its kind to be found in the modern era.
The first of these maps to be produced in the United States was produced by William Maclure in 1809. Maclure, undertook the task of taking a geological survey of the country in 1807. During the survey, Maclure traveled and mapped each state and geological aspects of each which were part of the Union at that time.
The journey which Maclure took to survey and research different areas of the United States took the surveyor across the Allegheny mountains more than fifty times. One outcome of these crossings, a map denoting findings of five classes of rocks which now are believed to only exist in the Eastern states of what is now present-day America.
While almost all United States geological maps are similar in comparison to that of the first one, a number are now overlaid on other topographical maps with colors, letters and symbols to mark different geographical aspects of the area. While symbols and letters are often used to notate different areas of the surface, faultlines and fossil findings, color is almost always used to denote the bedrock's exposure to the surface. As such, geological maps are often now used in earthquake sciences, marine biology, history, topology and other subsets of these areas.
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