Introduction to geology

With a train you have speed, comfort and pleasure combined. From the comfortable seat of a railway carriage you have a splendid view of the whole countryside. If you are hungry, you can have a meal in the dining-car; and if a journey is a long one you can have a wonderful bed in a sleeper.

Travelling by ship is also very popular now. It is very pleasant to feel the deck of the ship under the feet, to see the rise and fall of the waves, to feel the fresh sea wind blowing in the face and hear the cry of the seagulls.

Many people like to travel by car. It is interesting too, because you can see many sights in a short time, you can stop when and where you like, you do not have to buy tickets or carry your suitcases.

• A very popular means of travelling is hiking. It is travelling on foot. Walking tours are very interesting. Hitch-hiking is a very popular method of travelling among young people. But it is not as popular in our country as abroad.

TRAVELING AROUND THE WORLD

NEW WORDS

• English
• Travel
• Interesting
• New places
• Town
• Country
• Pleasure
• Business
• Various
• Comfortable
• Railway
• Car journey
• Trouble
• Trein
• Ship
• Ticket

• Uzbek
• Sayohat
• Qiziqarli
• Yangi joylar
• Shahar
• Mamlakat
• Xursandchilik
• Biznes
• Har xil
• Qulay
• Temir yo’l
• Avtomobil sayohati
• Muammo
• Trein
• Kema
• Chipta

SEDIMENTARY ROCKS

Sedimentary rocks are types of rock that are formed by the accumulation or deposition of mineral or organic particles at Earth’s surface, followed by cementation. Sedimentation is the collective name for processes that cause these particles to settle in place. The particles that form a sedimentary rock are called sediment, and may be composed of geological detritus (minerals) or biological detritus (organic matter). The geological detritus originated from weathering and erosion of existing rocks, or from the solidification of molten lava blobs erupted by volcanoes. The geological detritus is transported to the place of deposition by water, wind, ice or mass movement, which are called agents of denudation. Biological detritus was formed by bodies and parts (mainly shells) of dead aquatic organisms, as well as their fecal mass, suspended in water and slowly piling up on the floor of water bodies (marine snow). Sedimentation may also occur as dissolved minerals precipitate from water solution.