Annia
AnniaHi Annia,
I'll do my best to answer all your questions:
What type of lava and pyroclastic did Mount Helka produce?
--Mt Hekla in Iceland, produces mostly basalt and basaltic andesite lavas.
These are similar to the products of Hawaiian volcanoes
How high is Mount Helka in Iceland?
--The summit of Mt. Hekla is at 1491 meters above sea level according to
"Volcanoes of the World" by Tom Simkin & Lee Seibert. However, I don't
think the base of Mt. Hekla is at sea level so its actual height is less
than 1491 meters.
What type of pyroclastic erupted from Pitonde La Fournaise?
--Piton de La Fournaise is a basaltic shield volcano, similar to the
volcanoes here in Hawai'i. Therefore its pyroclastic deposits consist
mostly of cinder cones.
How long is a volcano considered active?
--That is pretty hard to answer in general. Different types of volcanoes
seem to have different life styles. For example, Yellowstone, an example
of a large rhyolite caldera, seems to erupt in a big way on average once
every 600,000 years or so. That's a really long time! On the other hand,
Hawaiian volcanoes practically finish most of their really active lives
during that length of time (they may continue to be active at a lower
level of activity longer).
What type of pyroclastic erupted from Mauna Loa?
--Mauna Loa, being a basaltic shield volcano produces almost exclusively
cinders (at cinder cones). There is one example on Mauna Loa (named Pu'u
Mahana) where the eruption took place down near the coast. The rising
magma came into contact with shallow groundwater and produced
phreatomagmatic explosions and a tuff cone instead of a cinder cone.
What is the longitude and latitude of Kileaua?
--Again according to "Volcanoes of the World": 19.425N 155.292W.
Remember, however, that Kilauea is a broad nearly flat-topped volcano.
I'm not sure where they decided where to determine the exact latitude and
longitude from.
Hopefully these answers will help.
Sincerely,
Scott Rowland
Other Categories
Other Questions
To VolcanoWorld