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5 résultats pour : pumice

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For more than nine hours a vigorous plume of ash erupted, eventually reaching 12 to 15 miles (20-25 kilometers) above sea level. The plume moved eastward at an average speed of 60 miles per hour (95 k...
LMY25T03_2HJCNX1

For more than nine hours a vigorous plume of ash e...

Mount St. Helens erupted often between 1980 and 1986. An explosive eruption on March 19, 1982, sent pumice and ash 9 miles (14 kilometers) into the air, and resulted in a lahar (the dark deposit on th...
LMY25T03_2HJCNH1

Mount St. Helens erupted often between 1980 and 19...

Ash covered street in Eastern Washington State after the 1980 volcanic eruption of Mount St. Helens
LMY25T03_BK9N3B

Ash covered street in Eastern Washington State aft...

A group of 6 tent rocks at at the Kasha-Katuwe Tent Rocks National Monument
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A group of 6 tent rocks at at the Kasha-Katuwe Ten...

KASHA-KATUWE TENT ROCK cone shaped rock carved out of a volcanic deposit (pumice, ash). New Mexico, USA.
LMY20T04_DH6CKR

KASHA-KATUWE TENT ROCK cone shaped rock carved out...