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  2. Crater - Wikipedia

    en.wikipedia.org/wiki/Crater

    A volcanic crater is a bowl-shaped depression in the ground caused by volcanic activity, usually located above the volcano's vent. [11] During volcanic eruptions, molten magma and volcanic gases rise from an underground magma chamber, through a conduit, until they reach the crater's vent, from where the gases escape into the atmosphere and the magma is erupted as lava.

  3. List of impact structures on Earth - Wikipedia

    en.wikipedia.org/wiki/List_of_impact_structures...

    The EID lists fewer than ten such craters, and the largest in the last 100,000 years (100 ka) is the 4.5 km (2.8 mi) Rio Cuarto crater in Argentina. [2] However, there is some uncertainty regarding its origins [ 3 ] and age, with some sources giving it as < 10 ka [ 2 ] [ 4 ] while the EID gives a broader < 100 ka.

  4. Volcanic crater - Wikipedia

    en.wikipedia.org/wiki/Volcanic_crater

    A volcanic crater is an approximately circular depression in the ground caused by volcanic activity. [1] It is typically a bowl-shaped feature containing one or more vents. During volcanic eruptions , molten magma and volcanic gases rise from an underground magma chamber , through a conduit, until they reach the crater's vent, from where the ...

  5. Volcanic field - Wikipedia

    en.wikipedia.org/wiki/Volcanic_field

    The north face of Mount Garibaldi rises above The Table and Garibaldi Lake in the Garibaldi Lake volcanic field. A volcanic field is an area of Earth's crust that is prone to localized volcanic activity.

  6. Complex crater - Wikipedia

    en.wikipedia.org/wiki/Complex_crater

    Eddie crater, a central peak-ring crater on Mars. A central-peak crater is the most basic form of complex crater. A central-peak crater can have a tightly spaced, ring-like arrangement of peaks, thus be a peak ring crater, though the peak is often single. [3] Central-peak craters can occur in impact craters via meteorites.

  7. Middlesboro crater - Wikipedia

    en.wikipedia.org/wiki/Middlesboro_crater

    The Middlesboro crater (or astrobleme) is a meteorite crater in Kentucky, United States. [2] It is named after the city of Middlesboro, Kentucky, which today occupies much of the crater. The crater is approximately 3 miles (about 5 km) wide and its age is estimated to be less than 300 million years . The impactor is estimated to have been about ...

  8. Volcanogenic lake - Wikipedia

    en.wikipedia.org/wiki/Volcanogenic_lake

    View of a bay in Lake Toba, on the island of Sumatra, Indonesia, which is the largest volcanic lake in the world. A volcanogenic lake is a lake formed as a result of volcanic activity. [1]

  9. List of possible impact structures on Earth - Wikipedia

    en.wikipedia.org/wiki/List_of_possible_impact...

    The following tables list geological features on Earth that are known impact events as well as possible, but for which there is currently no confirming scientific evidence in the peer-reviewed literature, impact events. In order for a structure to be confirmed as an impact crater, it must meet a stringent set of well-established criteria. Some ...