Which process dramatically accelerates when meandering river's neck is cut off?

💡 Explanation

When a meander neck is cut off forming an oxbow lake, the isolated water body becomes stagnant; anaerobic decomposition by microbes of organic matter becomes dominant producing methane at elevated local rate. Therefore, methane production increase results, rather than salinization, blocking or stratification which depend on alternate dominant mechanism.

• Which process drives thermohaline circulation in deep glacial lakes during winter stratification?
• Which tectonic effect directly results when the horizontal shearing motion builds along a transform fault exceeding lithospheric strength?
• Which consequence results when glacial till meets coastal wave action?
• Which consequence occurs when repeated freeze-thaw cycles destabilize loess?
• What geological outcome can be observed as soluble minerals are removed via percolating rainwater in soil?
• Which outcome accelerates when earthworm population densities increase?