West Molokai Volcano

Mauna Loa
Highest point
Elevation| 421 m (1,381 ft)
Coordinates| 21°08′N 157°12′W﻿ / ﻿21.13°N 157.20°W﻿ / 21.13; -157.20
Geography
Location| Molokai, Hawaii,
United States
Parent range| Hawaiian Islands
Geology
Age of rock| Pleistocene epoch
Mountain type| Shield volcano
Volcanic arc/belt| Hawaiian-Emperor seamount chain

West Molokai Volcano, sometimes called Mauna Loa for the census-designated place, is an extinct shield volcano comprising the western half of Molokai island in the U.S. state of Hawaii.

## Geology[edit]

It was formed in two volcanic phases during the Pleistocene epoch of the Quaternary period in the Cenozoic Era.

The first formed the broad tholeiitic shield volcano of West Molokai that ended 1.89 million years ago. The second volcanic phase produced postshield alkalic volcanics 1.76 million years ago.[1] There is no evidence for a rejuvenated phase of the West Molokai Volcano, whilst the East Molokai Volcano does.

West Molokai overlaps the western flank of East Molokai Volcano, a much larger shield volcano comprising two-thirds of Molokai. Two distinct rift zones are present on the western flank of the volcano, forming a v shape. A third rift zone possibly extended eastward towards the modern day East Molokai Volcano. A collapse occurred around (uncertain) years ago on the eastern/north eastern flank of the volcano and lava flows from East Molokai had filled in the open space, connecting the two volcanoes above surface (also known as the Molokai Saddle). The cliffs of the eastern side of West Molokai is the only remaining evidence for this land slip. Keep note that the West Molokai slip is completely separate from the much larger slip of the East Molokai Volcano.

## References[edit]

1. ^ Wood, Charles A.; Kienle, Jürgen (1990). Volcanoes of North America: United States and Canada. Cambridge, England: Cambridge University Press. p. 327\. ISBN 0-521-43811-X.

## External links[edit]

* "West Molokai". Global Volcanism Program. Smithsonian Institution. Retrieved 2021-06-28.

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Hawaiian volcanism topics (list)

Windward
Isles|

South Arch volcanic field
Kamaʻehuakanaloa
Māhukona
Hawaiʻi
Kīlauea (Kīlauea Iki, Pauahi Crater, Puʻu ʻŌʻō, Mauna Ulu)
Mauna Loa
Hualālai
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Kohala
Kahoʻolawe
Kauaʻi
Kaʻula
Lānaʻi
Maui
Haleakalā
West Maui
Molokaʻi
Penguin Bank
West Molokai Volcano
East Molokai Volcano
Niʻihau
Oʻahu
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North Arch volcanic field
Waiʻanae

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Notable eruptions
and vents|

* 1955 Hawaiian submarine eruption
* 1975 eruption of Mauna Loa
* 1984 eruption of Mauna Loa
* 2018 lower Puna eruption
* 2022 eruption of Mauna Loa
* Keanakakoi eruption
* ʻAilāʻau eruption
* Halemaʻumaʻu
* Kīlauea Caldera
* Kīlauea Iki
* Mauna Ulu
* Powers Caldera
* Puʻu ʻŌʻō

Topics|

* ʻAʻā (lava)
* Evolution of Hawaiian volcanoes
* Haleakalā National Park
* Hawaiʻi Volcanoes National Park
* Hawaiian–Emperor seamount chain
* Hawaiian eruption
* Hawaiian Volcano Observatory
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* Lava fountain
* Limu o Pele
* Mauna Loa eruptions
* Pāhoehoe (lava)
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* Pele's hair
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