A plain formed by river sedimentation, which continues to this day. In Japan, it is also used to mean a plain formed in the Holocene (alluvial epoch). Alluvial plains formed by river sedimentation are broadly divided into valley plains, alluvial fans, and deltas from upstream. In the latter sense, some alluvial plains are made up of marine deposits, lake deposits, and lagoon deposits from the Holocene (alluvial epoch) transgression. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
河川の堆積作用によって生じ,現在までその作用が続いている平野。日本では完新世 (沖積世) に形成された平野という意味にも用いられる。河川の堆積作用によって生じた沖積平野は,上流から谷底平野,扇状地,三角州に大区分される。後者の意味での沖積平野には完新世 (沖積世) 海進時の海底堆積物や湖,潟の堆積物から成る部分もある。
出典 ブリタニカ国際大百科事典 小項目事典ブリタニカ国際大百科事典 小項目事典について 情報 |
<<: Mesolithic Age (English spelling)
Year of death: May 25, 1786 (June 21, 1786) Year o...
A classic Korean novel. A folk tale that had been...
A type of instant food. It is dried ramen noodles ...
This is an illustrated scroll depicting the life o...
This is insurance that pays benefits when the ins...
= Ohara Zakone (Ohara Zakone) ※ Ukiyo-zoshi, Kosho...
...One of the two schools of Hindu law in India. ...
This is a Nichiren sect temple in Hanazono, Nishi...
...In 1507, this dojo was given a portrait of Ami...
An industrial city in North Hamgyong Province, No...
A method for separating and concentrating isotope...
〘noun〙① (━suru) something that a person writes dir...
What is the disease? It is an infection of the re...
…Including the cardinal beetle, many beetles in t...
An old name for the Shogawa River, which originate...