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Where was the first volcanic eruption in the lower 48 states since 1917?
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∙ 13y ago
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What is the meaning of violent eruption?
Violent eruptions (like Mt. St. Helens) have "felsic" magma/lava that is lower temperature (making it thicker), more gas (making it more explosive), and more silica (making it thicker).
When did the last volcano erupt in the US?
Currently that title goes to Kilauea in Hawaii, which has been erupting almost continuously since 1983. The last volcano to initiate an eruption was Mount Pavlof on the Alaska Peninsula, which produced a small eruption in June 2014.
What does lower 48 mean?
"The Lower 48" is a term often used to refer to the contiguous 48 states of the USA - excluding Alaska and Hawaii. The "lower" part is in reference to the fact that Alaska is much further north.
How magmas evolve?
Where magma erupts on the surface of the earth, temperatures are lower and cooling of the magma takes place much more rapidly. This is the extrusive or volcanic environment and results in extrusive or volcanic igneous rocks.
What is the primary way that volcanoes and can trigger a mass extinction?
Gasses released by a massive volcanic event can cause catastrophic climate changes. Carbon dioxide will raise global temperatures. while sulfur dioxide will lower temperatures.
What 3 states in lower 48 states are subject to volcanic hazards?
Washington (Mt Rainier, Mt Saint Helens) Oregon (Mt Adams and others) California (Mt Shasta and others). Yellowstone Park has many volcanic hazards.
What is the meaning of violent eruption?
Violent eruptions (like Mt. St. Helens) have "felsic" magma/lava that is lower temperature (making it thicker), more gas (making it more explosive), and more silica (making it thicker).
When did the last volcano erupt in the US?
Currently that title goes to Kilauea in Hawaii, which has been erupting almost continuously since 1983. The last volcano to initiate an eruption was Mount Pavlof on the Alaska Peninsula, which produced a small eruption in June 2014.
Would building a huge geothermal plant at Yellowstone lower the chances of a future eruption?
No. Chances are it would not affect the chances of an eruption.
What does lower 48 mean?
"The Lower 48" is a term often used to refer to the contiguous 48 states of the USA - excluding Alaska and Hawaii. The "lower" part is in reference to the fact that Alaska is much further north.
What were the causes of eruption from the volcano in Iceland?
From Scientific American:"When a part of the earth's upper mantle or lower crust melts, magma forms. A volcano is essentially an opening or a vent through which this magma and the dissolved gases it contains are discharged. Although there are several factors triggering a volcanic eruption, three predominate:the buoyancy of the magma,the pressure from the exsolved gases in the magma andthe injection of a new batch of magma into an already filled magma chamber."You can read more about the process, below.
Why are volcanic rocks often exposed at Earth's surface as hills ridges and mountains surrounded by areas of lower elevation?
Volcanic rocks are often more resistant to erosion than surrounding rock
How magmas evolve?
Where magma erupts on the surface of the earth, temperatures are lower and cooling of the magma takes place much more rapidly. This is the extrusive or volcanic environment and results in extrusive or volcanic igneous rocks.
What was the first home of congress?
The first home of Congress was Federal Hall in lower Manhattan, New York. from-United States Government Democracy in Action Textbook
Sequence of teeth eruption?
Primary (baby) teeth: A. the 2 lower central incisors +4 upper incisors B. upper and lower first molars (bicuspids) C. upper and lower cuspids (canine) D. upper and lower second molars Secondary (adult) teeth: A. upper and lower central incisors and first molars B. upper and lower lateral incisors C. upper and lower molars (bicuspids) D. upper and lower second molars E. upper and lower third molars (about 18 years old) Why? The theory is that the periodontal ligament provides the main way with the shrinking and cross-linking of collagen fibers.
What is the meaning of opposing arch in dentistry?
The opposite arch, or set of teeth. So for example if they say extract a first molar tooth on the upper arch but it may cause over-eruption of the opposing tooth in the opposing arch, it means the first molar tooth but in the lower arch.
Where does massachusettrs fit in the US Court of Appeals?
The United States District Court for the District of Massachusetts is the lower court under the United States Court of Appeals for the First Circuit.
