A caldera (/ k ɔː l ˈ d ɛr ə, k æ l-/ [1] kawl-DERR-ə, kal-) is a large cauldron-like hollow that forms shortly after the emptying of a magma chamber in a volcanic eruption. An eruption that ejects …

2024年4月30日 · A caldera is a depression created after a volcano releases the majority of the contents of its magma chamber in an explosive eruption. Without any structural support below, …

2025年1月22日 · Whether a volcano is designated a caldera, shield volcano, or stratovolcano with a caldera depends on the principal landform feature. For example, Crater Lake in Oregon in …

2023年4月17日 · Calderas may form in both silicic (dacitic to rhyolitic) and mafic (basaltic to andesitic) volcanic systems, leading to two main types of calderas. In addition to the …

2023年10月4日 · There are three main types of volcanoes: shield volcanoes, stratovolcanoes (also known as composite volcanoes), and cinder cones. Apart from these main types, other …

Variations in form and genesis allow calderas to be subdivided into three types: CRATER-LAKE TYPE CALDERAS. This caldera type is generated after the main phase of a Plinian eruption, …

2023年10月19日 · A caldera is a large depression formed when a volcano erupts and collapses. During a volcanic eruption , magma present in the magma chamber underneath the volcano is …

Calderas are some of the most spectacular features on Earth. They are large volcanic craters that form by two different methods: 1) an explosive volcanic eruption; or, 2) collapse of surface …

What is a volcanic caldera? A volcanic caldera is a large depression in the ground that forms after a major volcanic eruption. Types include collapse, resurgent, subsidence, explosion and others.

2008年12月1日 · Three main types of collapse calderas can be defined, 1) summit caldera, 2) classic caldera, and 3) graben caldera. Summit calderas are those formed at the top of large …