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For a long time, geologists were perplexed about the formation of the Nīnole Hills on the SE flank of Mauna Loa.  Are they remnants of an older summit of Mauna Loa or its predecessor volcano, Mohokea? The Nīnole Hills are a failed rift and mass-wasting events on Mauna Loa's western flank approximately 127,000 most likely caused the abandonment of the rift, leading to the westward migration of Mauna Loa's present SW Rift Zone.

For a long time, geologists were perplexed about the formation of the Nīnole Hills on the SE flank of Mauna Loa. Are they remnants of an older summit of Mauna Loa or its predecessor volcano, Mohokea? The Nīnole Hills are a failed rift and mass-wasting events on Mauna Loa's western flank approximately 127,000 most likely caused the abandonment of the rift, leading to the westward migration of Mauna Loa's present SW Rift Zone.

Mount St. Helens' summit after several small explosive eruptions opened pit craters. The smaller of the two pit craters was formed first on March 27, 1980. Subsequent eruptions opened the farther crater. The two craters subsequently merged. View looking west.

Helens' summit after several small explosive eruptions opened pit craters. The smaller of the two pit craters was formed first on March Subsequent eruptions opened the farther crater. The two craters subsequently merged.

Etna, joseph nasi

Summit Craters of Mount Etna volcano, April joseph nasi

Mount Teide (Spanish: Pico del Teide, pronounced: [ˈpiko ðel ˈtei̯ðe], "Teide Peak") is a volcano on Tenerife in the Canary Islands, Spain. Its 3,718-metre (12,198 ft) summit is the highest point in Spain and the highest point above sea level in the islands of the Atlantic.

This panoramic view of Mount Teide was created using SRTM data elevation).

The Soufriere Hills volcano erupting on the Caribbean island of Montserrat, on January 23, 2010.

Soufriere Hills volcano erupting on the Caribbean Is. of Montserrat on 3 wks after this photograph was taken, the volcano dome experienced another major partial collapse, triggering hrs of eruptions/ pyroclastic flows (APPhoto/Wayne Fenton)

Etna summit by joseph nasi

Etna summit by joseph nasi

Shishaldin Volcano Summit. As of 9-14-14, Shishaldin is rated Orange by the USGS.

summit of Shishaldin Volcano in Alaska’s Aleutian Islands.

Bazman (Kuh-e Bazman) is a 3490-m-high stratovolcano in a remote and arid region in SE Iran. A well-preserved, 500-m-wide crater caps the summit of the volcano. Its satellitic lava domes have been the source of fresh-looking viscous lava flows, including the prominent one with dramatic flow levees at the lower left. No historical eruptions are known from Bazman, but minor fumarolic activity has been reported.

Bazman (Kuh-e Bazman) is a 3490-m-high stratovolcano in a remote and arid region in SE Iran. A well-preserved, 500-m-wide crater caps the summit of the volcano. Its satellitic lava domes have been the source of fresh-looking viscous lava flows, including the prominent one with dramatic flow levees at the lower left. No historical eruptions are known from Bazman, but minor fumarolic activity has been reported.

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