Boulder
Query URLs
https://term.museum-digital.de/md-de/tag/40378
- Note
- "In geology (Udden–Wentworth scale), 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).[disputed – discuss] 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. They are called "erratic" because they typically are of a different rock type than the bedrock on which they are deposited. One such boulder is used as the pedestal of the Bronze Horseman in Saint Petersburg, Russia." - (en.wikipedia.org 03.08.2021)
-
Caspari, Walther: Die Bode bei Schierke
Der Mittelgrund des Bildes...
Object information
Image: Schloß Wernigerode GmbH - RR-F -
Backenbrecher (Backenquetsche)
**Titel: Die Funktionalität...
Object information
Image: Deutsches Straßenmuseum e.V. - CC BY-NC-SA -
Crola, Hugo: Gebirgslandschaft mit Wildbach
Das Bild zeigt einen...
Object information
Image: Schloß Wernigerode GmbH - RR-F -
Steinarbeiter beim Schieben einer Kipplore
Das Foto zeigt einen...
Object information
Image: Museum Steinarbeiterhaus Hohburg - CC BY-NC-SA -
Steinarbeiter beim Schieben einer Kipplore
Das Foto zeigt einen...
Object information
Image: Museum Steinarbeiterhaus Hohburg - CC BY-NC-SA
References
Synonyms
[]