Geology Report

3 different types of rock are found on the planet in the form of igneous, metamorphic and sedimentary. Igneous rocks are formed due to volcanoes while Metamorphic rocks are formed due to the increased temperature and pressure that is found in the crust of the earth. Sedimentary rocks are formed when different layers of soil are compressed on top of each other.

Metamorphic rocks:

Slate

This rock is formed through the metamorphism of shale.

Igneous rocks:

Pumice

This rock is formed through rapid solidification of melt.

Sedimentary rocks:

Limestone

This rock is formed from the accumulation of shell coral and algal.

A great way to classify soil is through the use of the soil triangle as talked about in class. Simply follow each percentage on the three sides to classify any type of soil found.  Every type of soil can be classified in the 12 soil orders of the earth as described in the following link:

http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/edu/?cid=nrcs142p2_053588

Below is also a diagram of the soil triangle.