In this article we will discuss about the seven main characteristics of igneous rocks. (1) In all, the igneous rocks are roughly hard rocks and water percolates with great difficulty along the joints. Sometimes the rocks become so soft, due to their exposure to environmental conditions for longer duration, that they can be easily dug out by a spade (e.g., [...]
The igneous rocks are more commonly classified on the basis of the mode of occurrence into two major groups:- 1. Intrusive Igneous Rocks 2. Extrusive Igneous Rocks. Group # 1. Intrusive Igneous Rocks: When the rising magmas during a volcanic activity do not reach the earth's surface rather they are cooled and solidfied below the surface of the earth, the [...]
In this article we will discuss about the characteristics of granite and basalts which are the most significant examples of igneous rocks. Characteristics of Granites: Granites are the example of the plutonic intrusive igneous rocks which are formed deep within the earth. Since the rate of cooling and solidification of magmas inside the earth is very slow because of very [...]