
adj.
Of, relating to, or found in alluvium: alluvial soil; alluvial gold.
On this page
American Heritage Dictionary:
al·lu·vi·al |

|
Featured Videos:
|
Oxford Dictionary of Geography:
alluvial |
Referring to fluvial contexts, processes and products, so that an alluvial channel is a river channel cut in alluvium; it is self-forming, in that its form reflects the load and discharge of the river rather than the constraints of a bedrock.
An alluvial fan is a fan-shaped landform composed of alluvium dropped by a river after it loses momentum as it enters a broad valley from a narrow, upland course. The fan shape is the result of the river swinging back and forth over the aggradation deposits while the apex is fixed at the point where the river emerges from the uplands. It is the terrestrial equivalent of a delta.
An alluvial cone is similar in origin, but tends to have a steeper slope. Cones tend to grow from seasonal streams in semi-arid or arid areas, such as the western flank of the Sangre de Cristo range, Colorado. Alluvial fill would appear to be another term for alluvium, and the process of sedimentation from fluvial channels may also be described as alluvial filling. This generally comes about in one of four ways:
▪ when the discharge decreases;
▪ when the amount of load increases;
▪ when the width/depth ratio of the channel changes;
▪ when a change in base level lowers the gradient.
Word Tutor:
alluvial |
It was easy to see the alluvial deposits on the banks of the river.
LearnThatWord.com is a free vocabulary and spelling program where you only pay for results!
Rhymes:
alluvial |
| stream tin (geology) | |
| alluvious | |
| alluvial mining (mining engineering) |
| What is an alluvial plain? Read answer... | |
| How is an alluvial fan? Read answer... | |
| What are alluvial sediments? Read answer... |
| What is the alluvial soil? | |
| What is an alluvial fan and where are alluvial fnas usually formed? | |
| How do you say alluvial? |
Copyrights:
![]() |
![]() | American Heritage Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved. Read more |
![]() | Oxford Dictionary of Geography. A Dictionary of Geography. Copyright © Susan Mayhew 1992, 1997, 2004. All rights reserved. Read more | |
![]() |
![]() | Word Tutor. Copyright © 2004-present by eSpindle Learning, a 501(c) nonprofit organization. All rights reserved. eSpindle provides personalized spelling and vocabulary tutoring online; sign up free. Read more |
| Rhymes. Oxford University Press. © 2006, 2007 All rights reserved. Read more |
Mentioned in