Examlex
Which of the following was probably not one of the components of the "systems failure" that brought down the Indus Valley cities?
Caldera Eruption
A volcanic eruption characterized by the collapse of land following a massive explosion, leaving a large, basin-shaped depression.
Basaltic Lava
A type of lava that is low in silica and has a low viscosity, resulting in smooth flows; it originates from the rapid cooling of basaltic magma.
Felsic Lava
Lava that is high in silica content, typically resulting in lighter colored rocks, such as rhyolite, and is more viscous compared to mafic lava.
Vesicular Lava
Lava characterized by a rough, bubbly texture due to the escape of gases during solidification.
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