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Science - Geology
Additional field(s): Geography | | English term or phrase: caldera | Definition from CENGAGE Learning :
A vast depression at the top of a volcanic cone, formed when an eruption substantially empties the reservoir of magma beneath the cone's summit. Eventually the summit collapses inward, creating a caldera. A caldera may be more than 15 kilometers in diameter and more than 1000 meters deep.
Example sentence(s): - Subsequent eruptions from the Long Valley magma chamber were confined within the caldera with extrusions of relatively hot (crystal-free) rhyolite 700,000 to 600,000 years ago as the caldera floor was upwarped to form the resurgent dome followed by extrusions of cooler, crystal-rich moat rhyolite at 200,000-year intervals (500,000, 300,000, and 100,000 years ago) in clockwise succession around the resurgent dome. USGS
- Calderas tend to form after a series of large eruptions. Usually a new volcano starts to grow inside, eventually covering it. About.com: Geology
- Over the course of several hundred years following the creation of the caldera, rain and snow filled the basin to a depth of 1,943 feet (592 meters). Crater Lake today is the nation’s deepest lake. Crater lake
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| kaldera | Definition:
A kaldera vulkáni eredetű, negatív felszínforma, olyan horpadály, amit a vulkán kirobbanása és önmagába roskadása hoz létre. Tévesen gyakorta egyfajta vulkáni kráternek tekintik. Neve az "üst" jelentésű spanyol caldera szóból ered. |
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1 day10 hrs confidence:  peer agreement (net): +2 kaldera
Definition from http://hu.wikipedia.org/wiki/Kaldera:
A kaldera vulkáni eredetű, negatív felszínforma, olyan horpadály, amit a vulkán kirobbanása és önmagába roskadása hoz létre. Tévesen gyakorta egyfajta vulkáni kráternek tekintik. Neve az "üst" jelentésű spanyol caldera szóból ered.
Example sentence(s):
Explanation:
Kalderaszerű berogyások természetes vagy mesterséges üregek fölött is kialakulnak. Jellemzően ilyenek a felhagyott mélyművelésű bányák fölött a bánya lerablása (az ácsolat és az egyéb, használható anyagok kimentése) után kifejlődő süllyedékek.
Kalderának nevezik a bányászatban a több, lefelé egyre szűkülő bányaudvarból álló külfejtéseket is.
| Hungary GMK
Hungary
Local time: 04:39
Native speaker of:  Hungarian
PRO pts in category: 12
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