Geologic cross sections are designed to show the layers of rock beneath the Earth's surface. They are used by geologists to better understand the geologic history of an area. By examining the layers of rock and their characteristics, geologists can determine the age of the rocks and how they were formed.
One type of fault that is caused by strong compressional forces is a reverse fault. This type of fault occurs when the rocks are pushed together by compressional forces, causing one side of the fault to move up relative to the other.
The Bowen Reaction Series is a geologic concept that shows the order in which minerals crystallize from magma as it cools. This series helps geologists understand the mineral composition of igneous rocks. As the magma cools, the minerals that crystallize out first are those that have the highest melting points. This means that minerals like olivine and pyroxene crystallize first, followed by others like plagioclase feldspar and quartz. By understanding the order in which minerals crystallize, geologists can better understand the formation and composition of igneous rocks.