(i) Slate - It is composed of fine-grained particles which splits into thin or thick sheets. It has a blue-black color but red, green and black slates are also found.
(ii) Phyllite - This is in a more metamorphosed form than state. It has lustre due mica particles. The rocks less metamorphosed than phyllite are called slates and those more metamorphosed are called schists.
(iii) Schist - It is more metamorphosed than Phyllite and has a higher content of mica and quartz. It is of two types-Chlorite Schist and Hornblende schist.
(iv) Gneiss - It consists of coarse particles and develops incomplete cleavages and many layers. It has an excess of Feldspar, Quartz, mica, etc. Granite Gneiss is a well-known rock.
(v) Marble - It is metamorphosed from limestone and dolomite. It is a beautiful stone and is used in makings. The world famous Taj Mahal of India is a good example of building made of marble.
(vi) Quartzite - Quartzite is formed when the limestone particles are cemented by Quartz. Quartz gets deposited on the particles of sand in the form of a solution. It has the lustre of glass. Pure quartzite has 97% silica dioxide but this percentage is different in different quartzites.
Examples of metamorphic rocks metamorphosed from basic rocks:
Locals hypothesize that the legacy of Italian blood and culture in Cologne, colonized by the Romans more than 1500 years ago, makes the people more jovial and lighthearted. Cologne is the largest city on the Rhine.
Kolsch is not only the dialect spoken here but, also the name of their own top-fermented beer. There are more than 4,000 pubs, restaurant's and brewery taverns in Cologne.
Unlike many of the world's large cities, Cologne, with a population of over a million, gets better every day, there are more things to do and see, more new and innovative buildings... more
Travel is an opportunity to learn, whether geography, languages, history or other subjects.
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Cologne is situated on the beautiful Rhine River.