Welcome to Petroleum Geology Forums

This is a free online community that aims to bring petroleum professionals and geologists together and share valuable knowledge. Registration is easy so become a member now for instant free access.
  • Petroleum Geologists can stay up to date with industry related topics and exchange ideas and concepts.
  • Upstream Oil and Gas Consultants get a chance to share their expertise and gain exposure to land future projects.
  • Geology students and graduates can join the discussion and get into contact with potential future employees.

  >> Register Now




Meandering channel though valley 

Meandering channel though valley
Description: Overview of features associated with meandering streams. A meandering stream migrates laterally by sediment erosion on the outside of the meander. Adjacent to the channel levee deposits build up. If the climate is humid the floodplain area beyond the levees may be covered with water most of the time, and may form a swamp (backswamp). Rivers that want to enter the main stream may not make it up the levee, and empty either into the backswamp (filing it up gradually) or flow parallel to the stream for a long distance until they finally join (yazoo streams). Meanders may cut into each other as they grow (neck cutoffs), and then the river shortcuts (growing meanders reduce the slope, cutoffs are a means to increase the slope again, feedback loop) and the old meander is abandoned and slowly fills with fine sediment during floods (oxbow lakes). Also, as a river builds up its levees and raises itself over the floodplain, the slope and the transport power of the stream decrease, the channel fills gradually with sediment, and finally (often during a flood) the river will breach its levee (this process is called avulsion) and follow a steeper path down the valley.
Previous Image Image Info Next Image
Meander Growth Patterns
Uploaded:Sun Nov 09, 2014 3:03 am
Views:6525




Meandering River Belt in Sahara Desert


Message 
No comments yet
cron


Content on EPGeology.com is intended for personal use only and to supplement, not replace, professional judgment. EPGeology.com disclaims any and all liability for your use of its content. As most of our content is supplied by our users we can not check copyright, and stress that copyright remains at the original owner. If you suspect copyright infringement please use the contact form to report it.
Contact || © EPGeology.com. || Powered by phpBB Asteroid Mining

phpBB SEO