Hampton Park is one of the

volcano A volcano is commonly defined as a vent or fissure in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most oft ...

es in the

Auckland volcanic field The Auckland volcanic field is an area of monogenetic volcanoes covered by much of the metropolitan area of Auckland, New Zealand's largest city, located in the North Island. The approximately 53 volcanoes in the field have produced a divers ...

. A small

scoria cone A cinder cone or scoria cone is a steep, conical landform of loose pyroclastic fragments, such as volcanic ash, clinkers, or scoria that has been built around a volcanic vent. The pyroclastic fragments are formed by explosive eruptions or l ...

reaching above sea level, with a shallow

crater A crater is a landform consisting of a hole or depression (geology), depression on a planetary surface, usually caused either by an object hitting the surface, or by geological activity on the planet. A crater has classically been described ...

around wide, which has been modified by

quarrying A quarry is a type of open-pit mine in which dimension stone, rock, construction aggregate, riprap, sand, gravel, or slate is excavated from the ground. The operation of quarries is regulated in some jurisdictions to manage their s ...

."Volcanoes of Auckland: The essential guide." - Bruce Hayward, Graeme Murdoch, Gordon Maitland; Auckland University Press, 2011. The scoria cone sits in the centre of a much larger

explosion crater An explosion crater is a type of crater formed when material is ejected from the surface of the ground by an explosion at or immediately above or below the surface. A crater is formed by an explosion through the displacement and ejection of mate ...

, the eastern arc of the surrounding

tuff ring Phreatomagmatic eruptions are volcanic eruptions resulting from interaction between magma and water. They differ from exclusively magmatic eruptions and phreatic eruptions. Unlike phreatic eruptions, the products of phreatomagmatic eruptions cont ...

is still present.

Stone In geology, rock (or stone) is any naturally occurring solid mass or aggregate of minerals or mineraloid matter. It is categorized by the minerals included, its Chemical compound, chemical composition, and the way in which it is formed. Rocks ...

from the volcano was used to build dry-stone walls and the nearby St John's Church built on the tuff ring crest.

References

*''City of Volcanoes: A geology of Auckland'' - Searle, Ernest J.; revised by Mayhill, R.D.; Longman Paul, 1981. First published 1964. . *"Volcanoes of Auckland: The essential guide." - Bruce Hayward, Graeme Murdoch, Gordon Maitland; Auckland University Press, 2011. *''Volcanoes of Auckland: A Field Guide''. Hayward, B.W.; Auckland University Press, 2019, 335 pp. . Auckland volcanic field East Auckland {{Auckland-geo-stub