Boulder | |
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State | Utah |
Country | United States of America |
Capital | |
Population | 0 |
Postcode | 84716 |
In geology, a boulder is a rock fragment with size greater than 256 millimetres (10.1 in) in diameter. Smaller pieces are called cobbles and pebbles. While a boulder may be small enough to move or roll manually, others are extremely massive.
In common usage, a boulder is too large for a person to move. Smaller boulders are usually just called rocks (American English) or stones (In British English a rock is larger than a boulder). The word boulder is short for boulder stone, from Middle English bulderston or Swedish bullersten.In places covered by ice sheets during Ice Ages, such as Scandinavia, northern North America, and Siberia, glacial erratics are common. Erratics are boulders picked up by ice sheets during their advance, and deposited when they melt.
Chur | |
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State | Grisons |
Country | Switzerland |
Capital | |
Population | 34350 |
Chur (German: [ˈkuːr] or [ˈxuːr]) or Coire (French: [kwaʁ]; Romansh: Cuira [ˈkweːrɐ] (listen) or [ˈkwoi̯rɐ]; Italian: Coira [ˈkɔira]) is the capital and largest town of the Swiss canton of Grisons and lies in the Grisonian Rhine Valley, where the Rhine turns towards the north, in the northern part of the canton. The city, which is located on the right bank of the Rhine, is reputedly the oldest town of Switzerland.