Which feature provides evidence that a volcano existed in the past?(1 point)
Responses
calderas
calderas
mountains
mountains
valleys
valleys
rivers
calderas
The feature that provides evidence that a volcano existed in the past is calderas.
The feature that provides evidence that a volcano existed in the past is calderas. Calderas are large volcanic depressions that form when the top of a volcano collapses following a large eruption or the emptying of a magma chamber. They are essentially large, circular holes in the ground that are left behind after a volcanic eruption.
To determine if a caldera exists or existed in a particular area, you can look for specific geological features. One way to identify a caldera is by its shape – they are typically circular or elliptical in form. Another clue is the presence of steep walls or cliffs surrounding the depression. These walls are usually made up of layers of volcanic material, such as ash, rocks, and lava flows. Additionally, calderas often have flat or sunken floors that may contain lakes or other bodies of water.
By studying these geological features and examining the surrounding landscape, geologists and scientists can gather evidence to determine if a volcano existed in the past and to understand its history and activity.