How can volcanoes, landslides, or meteorite impacts create playas in deserts?

In the context of geology, playas are enclosed basins where salt and clay accumulate. While many playas form through tectonic processes or wind deflation, they can also be created by local cataclysmic disruptions of drainage, specifically volcanism, landslides, and meteorite impacts.1

These events create playas by physically altering the landscape to form closed depressions that trap water and sediment:

• Volcanism: Volcanic activity can create basins through the formation of calderas (large craters formed by the collapse of magma chambers), the creation of maars (explosion craters), or by lava flows that dam existing drainage patterns, forcing water to collect in a new, enclosed area.2
• Landslides: A landslide can obstruct a valley or drainage depression, creating a natural dam that traps water and allows for the subsequent accumulation of fine-grained sediments characteristic of a playa.2
• Meteorite Impacts: Large-scale impacts create significant depressions or craters in the Earth's surface. In arid regions, these impact basins can serve as closed systems that collect runoff and sediments, eventually evolving into playas.13