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Its composed of volcanic ash & sometimes contains larger size particles such as cinders.
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∙ 13y ago
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What are all the igneous rocks?
All Igneous rocks are:CrystallineComposed of mineralsFormed from magma/lava (except for 'tuff' which forms from ash, which is a volcanic product)(Please add more)
How does a welded tuff differ from a cemented tuff?
Welded tuff is forms when the ash deposited is so hot that it is still partially molten. The still liquid component then cools, fusing the deposit into a single solid mass. Cemented tuff becomes bound together from processes similar to those that form ordinary sedimentary rocks. Grains are bound together under pressure as minerals dissolved in water crystallize.
Does an igneous rock crumble or fall apart easily?
Not usually. Unless the rock is tuff or is heavily weathered, most igneous rocks are quite strong.
Is tuff foliated?
No. Tuff may have depositional layers, but this is not the same as foliation, which is a charactersitic of metamorphic rock.
How does tuff form?
Tuff forms by layers of volcanic debris being put under pressure and coming together. Sometimes other materials get into the mix and form other kinds of tuff.
What are some extrusive of igneous rocks?
== == Rhyolite, basalt, pumice, obsidian, andesite, dacite, tuff, welded tuff, scoria.
What are some names of extrusive igneous rocks?
== == Rhyolite, basalt, pumice, obsidian, andesite, dacite, tuff, welded tuff, scoria.
What minerals are in welded tuff?
welded tuff is a igneous rock so it is more likely for it to have the same minerals as most other igneous rocks.
What is formed by explosive eruptions by a volcano?
Explosive eruptions will produce pyroclastic rocks such as scoria, pumice, and tuff.
What are facts about malleable rocks?
sedimentary rocks are malleable.
What is a rock that is unique to volcanoes?
Rocks unique to volcanoes include basalt, andesite, rhyolite, scoria, pumice, and tuff.
What are some different types of lava rocks?
there are many types of rocks created by lava including: basalt, andesite, rhyolite, obsidian, tuff, pumice, cinder, and scoria.
What are all the igneous rocks?
All Igneous rocks are:CrystallineComposed of mineralsFormed from magma/lava (except for 'tuff' which forms from ash, which is a volcanic product)(Please add more)
How does a welded tuff differ from a cemented tuff?
Welded tuff is forms when the ash deposited is so hot that it is still partially molten. The still liquid component then cools, fusing the deposit into a single solid mass. Cemented tuff becomes bound together from processes similar to those that form ordinary sedimentary rocks. Grains are bound together under pressure as minerals dissolved in water crystallize.
What is a fact about batholith?
facts about batholiths are that the are rocks
What are facts about dull rocks?
they r dull
Can you give me facts about sedimentary rocks?
turkey
