Nigeria has no calderas.
Calderas can be occupied by lakes, but they do not have to be. Seomve calderas are dry while others are located beneath the sea.
Nobody dislikes aleandria calderas.
Calderas can be found in volcanic regions where large volcanic eruptions have resulted in the collapse of the magma chamber underneath the volcano. Some well-known calderas can be found in places like Yellowstone National Park in the United States and Santorini in Greece.
calderas
Calderas
about 3
There are a few ancient Calderas in Texas. Texas isn't near any 'hotspots' or tectonic plate boundaries, so it's not volcanically active. The Calderas are in the western part of the state and are about 40 million years old or so... One in particular is the Buckhorn Caldera near Ft. Davis, Texas.
Calderas are typically larger than most impact craters, which are formed by meteorite impacts. Calderas are massive volcanic depressions that form when the ground collapses after a volcanic eruption depletes the magma chamber. The size of both structures can vary greatly, but calderas tend to be larger in scale.
both are natural holes in the ground. calderas are made by volcanoes ad craters are made by things that crash into Earth like meteors
No. Hot spots are located under many, but not most volcanoes. Many calderas are associated with subduction zones. When the ground in a caldera rises it is called a resurgent dome, not a hot spot.
When rock melts at calderas, it forms magma. This magma is then forced towards the Earth's crust as lava through volcanic eruptions.