Fluvial Systems and River Types

The video tutorial covers fluvial depositional environments, focusing on how rivers transport sediment from continents to oceans. It explains flow types, sediment movement, and the impact of flow velocity and grain size on deposition and erosion. The tutorial also distinguishes between meandering and braided river systems, detailing their characteristics, deposition patterns, and geological significance. The video concludes with a brief overview of future topics related to depositional basins.

What are the two main types of flow in fluvial systems?

• Laminar and turbulent

• Confined and unconfined

• Fast and slow

• High and low viscosity

Which factor primarily influences sediment movement in fluvial systems?

• Temperature

• Water color

• River depth

• Flow velocity and grain size

What is the term used to describe the winding nature of meandering rivers?

• Curvature

• Twistiness

• Sinuosity

• Bendiness

Which type of river is characterized by having a single main channel?

• Braided

• Straight

• Meandering

• Anastomosing

What forms on the outer edges of meanders in a river?

• Floodplains

• Point bars

• Cut banks

• Oxbow lakes

What is a characteristic feature of braided rivers?

• Single channel

• High sinuosity

• Multiple channels

• Low sediment load

What process causes the formation of bars in braided rivers?

• Erosion

• Avulsion

• Deposition

• Sedimentation

Which type of bar is found in the center of a braided river system?

• Transverse bar

• Longitudinal bar

• Edge bar

• Point bar

What is the primary difference in sediment load between meandering and braided rivers?

• Both have the same sediment load

• Braided rivers have a coarser load

• Braided rivers have a finer load

• Meandering rivers have a coarser load

What is the term for the abandonment of a channel in braided rivers?

• Avulsion

• Erosion

• Migration

• Deposition