Textures are of a rock are the size, grains, and the arrangements of grains in the case of sedimentary rocks or Crystal in the cases of metamorphic and igneous rocks. Textures are used by geologists in determining the mode of origin.
For igneous rocks there are six main types of textures, they include:
1. phaneritic
2. aphanitic
3. porphyritic
4. glassy
5. pyroclastic
6. pegmatitic
Intrusive Igneous rocks have the PHARNERITIC textures. These rocks crystallize slowly beneath the earth's surface. Examples may include granite and gabbro.
Volcanic rocks are also found below the earth's surface but differs from intrusive igneous rock by being of volcanic origin. The texture of volcanic rocks are APHANITIC to glassy texture. Examples are andesite and basalt.
Cape Town usually experiences high pressure weather conditions because its average elevation is just 22 feet above sea level, but this is what Cape town is famous for! Its high pressure weather conditions.
Answer: Mining and quarrying can be very destructive to the environment. They have a direct impact on the countryside by leaving pits and heaps of waste material. The extraction processes can also contaminate air and water with sulfur dioxide and other pollutants, putting wildlife and local populations at risk.
