Mauna Loa Volcano Diagram

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Mauna Loa is a typical shield volcano in form, taking the shape of a long, broad dome extending down to the ocean floor whose slopes are about 12° at their steepest, a consequence of its extremely fluid lava. The shield-stage lavas that built the enormous main mass of the mountain are tholeiitic basalts, like those of Mauna Kea, created through the mixing of primary magma and subducted oceanic crust. Mauna Loa's summit hosts three overlapping pit craters arranged northeast–southwest, the first and last roughly 1 km (0. 6 mi) in diameter and the second an oblong 4. 2 km × 2. 5 km (2. 6 mi × 1. 6 mi) feature; together these three craters make up the 6. 2 by 2. 5 km (3. 9 by 1. 6 mi) summit caldera Mokuʻāweoweo, so named for the Hawaiian ʻāweoweo fish (Priacanthus meeki), purportedly due to the resemblance of its eruptive fires to the coloration of the fish. Mokuʻāweoweo's caldera floor lies between 170 and 50 m (558 and 164 ft) beneath its rim and it is only the latest of several calderas that have formed and reformed over the volcano's life. It was created between 1,000 and 1,500 years ago by a large eruption from Mauna Loa's northeast rift zone, which emptied out a shallow magma chamber beneath the summit and collapsed it into its present form. Additionally, two smaller pit craters lie southwest of the caldera, named Lua Hou (New Pit) and Lua Hohonu (Deep Pit).

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Mauna Loa - Art by Yvonne Byers
Mauna Loa - Art by Yvonne Byers
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Schematic cross section for the internal structure of ...
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Hawaii’s big Kilauea and Mauna Loa volcanoes may share ...
Hawaii’s big Kilauea and Mauna Loa volcanoes may share ...
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Hawaii Volcanoes: April 2011
Hawaii Volcanoes: April 2011
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Case Study 3 – Shield Volcano – Mauna Loa, Hawaii ...
Case Study 3 – Shield Volcano – Mauna Loa, Hawaii ...
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June 5: Steve Brantley (USGS) Sums Up Eruption So Far ...
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4.3 Types of Volcanoes | Physical Geology
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Volcanoes | Volcano, Magma chamber, Erupting volcano
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Parts Of A Volcano Diagram — UNTPIKAPPS
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UCSB Science Line
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How Volcanoes are formed? | Volcano info for you.
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A diagram showing a shield volcano. | Shield volcano ...
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Photo Gallery of Rockhounding
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Oceanic Volcanism Hawaii
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As Lava Flows in Hawaii, Agency Warns, ‘This Is Not the ...
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Subaerial volcanoes of the Island of Hawaiÿi. Mauna Loa ...
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Hawaii's Kilauea Volcano Lava Inches Toward Homes Kids ...
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Tamu Massif - Largest Volcano on Earth? ~ Hudson Valley ...
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Lava erupting from a segment of Mauna Loa's northeast rift ...
Lava erupting from a segment of Mauna Loa's northeast rift ...
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As Lava Flows in Hawaii, Agency Warns, ‘This Is Not the ...
As Lava Flows in Hawaii, Agency Warns, ‘This Is Not the ...
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Fun Volcano Facts for Kids
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Chapter 12: Volcanoes and Igneous Activity - Earth And ...
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Map of the 1984 Mauna Loa eruption showing sample ...
Map of the 1984 Mauna Loa eruption showing sample ...
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Monitoring Volcanoes (U.S. National Park Service)
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What is a volcano? All about volcanoes.
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A side view of the inside, visually show the layers ...
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GEOL205: Giant Landslides: Kilauea and Mauna Loa
GEOL205: Giant Landslides: Kilauea and Mauna Loa
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