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Plants need and love nitrogen, phosphorous, and potassium as their primary nutrients. Lavas and ash are rich in potassium and iron, which is often a limiting nutrient. Certain types of crystallized lava can be very porous, and vesicular, meaning that they can hold large amounts of water, especially if they've been given time to weather and erode. Certain lavas, dependent on local magma chemistry, can include significant amounts of magnesium, silica, aluminum, sodium, and chlorine.
They care many non-crystalline (amorphous) minerals, such as allophone and imogolite, which form strong bonds with organic materials, which, in addition to the elemental chemistry in the volcanic soils, allows enormous amounts of plant life to take root. New lavas aren't very fertile. They need time to weather and release their nutrients, and to open up those pores. This is why Kauai'i is the Garden Isle (I love it), but on the Big Island, there are surprisingly few places that are actually lush with vegetation.
However, the dispersal of volcanic ash can also be devastating to soil and organics. When Mt. St. Helens went off, its ash covered enormous areas. Its particular ash acted as somewhat of a clay mineral when it gathered, especially when it bonded with precipitation, forming a fairly impermeable layer that hurt not only soils, but also stuck directly to plants themselves, causes physical trauma and chemical trauma as well, blocking out light and gas intake/release for photosynthesis.
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Was Pompeii covered in ash or lava?
Both, but most of the mass expulsed by the explosion was in the form of ash
Where does the magma go after it rises from the Earth's crust?
Magma that reaches the surface erupts from volcanoes, either effusively to form lava or explosively to form ash, pumice and cinders. Lava and in some cases ash will then cool to form solid rock.
These things come out of a volcano after an eruption?
lava,ash,tephra,volcanic bombs
What does ash of plant contain?
Ash supplies potash, an essential plant nutrient. Ash is good for acidic soils not for alkaline soils. Forest soils are usually acidic. Some plants do well in acidic soils others do well in alkaline soils. Figure out what soil you have and what you plan to plant and look up to see what they like.
What is the difference between volcanic ash and volcanic lava?
Lava is a hot liquid from the inside of the earth and ash is a lava powder, which is very hot.
When a volcano erupts where does the lava ash and gases come from?
lava, ash and gases come from the centre of the earth where they have been kept for a very long time and they become so cramped that they have to find a way out so they form volcanos.
When magma leaves the vent of a volcanowhat is it called?
Lava if it is liquid, which then freezes. Ejecta if it is in the form of bombs or ash.
What is layer of lava and ash?
When molten rock (lava) flows from a volcano, it covers the surrounding area in a layer of solidified rock. During the eruption, ash can also be thrown up high into the sky by the volcano, and blown by the wind, could settle in a thick, smothering layer. The city of Pompeii suffered from being smothered by volcanic ash.
Does it spew lava or ash or flow?
A volcano will spew lava.
Did mount fuji erupt with ash?
lava mud ash
Do composite volcanoes blow out smoke and ash or lava?
ash
Do volcanoes produce large amounts of ash when they erupt?
Volcanoes with high levels of water in their lava produce ash, those with dry lava produce no ash.
