It seems your question got cut off. If you're asking for an example of a location on Earth's surface, one notable example is Mount Everest, which is the highest peak in the world, located in the Himalayas on the border between Nepal and the Tibet Autonomous Region of China. If you meant something else, please provide more details!
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geoligical map
There are almost no extrusive rocks on the earths surface because they are all under the earths surface. They are mainly lower than the earths surface.
Their evidence comes from rocks at earths surface.
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Absolute Location.
Location and elevation of Earths surface features.
A point on the Earths surface in terms of coordinates; typically in that of longitude and latitude.
Longitude and Latitude
The Earth's surface layer is called the crust.
geoligical map
The edge of the earth is the earth's crust.
Volcanoes
Lava
obsidian is one of them