An estimated two billion years ago, a large force of nature began to change on the Earth’s surface rocks “Feldspatik”. An interaction between the earth’s atmosphere containing the gas to the surface of the earth will be mutual influence. At the time of the earth cools, water vapor in the atmosphere in the form of gas began to condense and rain to pass. Rainwater filling basins then forming an impact on the oceans and land surface has a higher surface lines.
Water is one of the important factors that can change the earth’s surface. Water can dissolve stones in large quantities. For millions and even billions of years, water has eroded the mountains and valleys flatten.
The presence of mineral salts in the ocean that number is estimated to 1500 billion tonnes of proved that so much water that erodes the strength of rocks and dissolving alkaline substances and other minerals that have been eroded, and flowing into places of lower and eventually into the sea. Water can also cleave a way to infiltrate the rock crevices.
In the winter the temperature reaches about 0 º, the water in the rock cracks freezes and expands before finally breaking rocks into smaller pieces. In addition to water, vegetation can also destroy rock hard.
Through the power of propagation, its roots can enter crevices in the rock and its growth tends to break the stone into smaller units. Wind and glaciers are also considered as a great natural power andcan move smooth clay mineral rock weathering results feldspatik into Gated remote from its parent rock.
Natural force that can change the earth’s surface is divided into two, namely:
1. Workers Exogenous
Exogenous force for the changes in the earth’s surface due to the influence of water, wind, glaciers and vegetation. At the time of the burning ball cools, there was shrinkage. Consequently mineral materials in the earth pushed upward to form hills and mountains. By weathering and erosion processes that continuously throughout the ages, hills and mountains swept clean, the minerals in the form of clay mud flows along the water to a low spot and finally settles in lakes or oceans.
2. Workers Endogenous
Power endogenous causes changes in the earth by the influence of heat and power is very great earthquake. Precipitate was pushed back up into the hills and mountains. So forth issued from the earth in the form of steam, gas pressure, earthquakes and so it is called endogenous power.
Granite rock weathering process can be described as shown below.
