Which outcome typically occurs when longshore drift encounters a submerged obstruction?

💡 Explanation

Tombolo formation occurs because sediment deposition increases in the wave shadow behind obstructions due to reduced energy and velocity caused by wave refraction. Therefore, a tombolo forms rather than a barrier island, because a tombolo connects to the mainland.

• Which mechanism causes crustal thinning directly above a strike-slip fault zone?
• In arid climates, which consequence results when deflation exposes caliche layers?
• Which mechanism primarily controls sediment sorting within an alluvial fan environment during flood events?
• Which outcome occurs when groundwater permeates fault gouge?
• Which climatic effect results when thermohaline circulation weakens due to increased freshwater input in North Atlantic?
• Which mechanism explains sediment layering in glacially-formed proglacial lakes with seasonal meltwater inflow?