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Igneous rocks are made from magma. Magma is made of melted rocks. (When it is underground it is called magma, when it erupts on the surface of the earth, it is called lava. It's the same material though.) When magma/lava cools, it forms igneous rocks. There are many types of igneous rocks and the specific type of igneous rock can vary according to which minerals are present in the melted rock, how fast it cools, and the presence of things like water.
Sedimentary rocks are made out of tiny pieces of debris. This can include tiny rocks, sand, clay, silt, and organic material. (Organic materials can vary from rotted leaves to tiny, shelled ocean creatures, or many other types of organic material.) These bits of material collect in an area, then through compaction and cementation, they stick together to form sedimentary rocks.
Sedimentary rocks can also be formed when minerals are dissolved in water and are then resolidified. This type of sedimentary rock is called a chemical sedimentary rock. Oolitic limestone is a good example of this type of sedimentary rock.
Wiki User
∙ 9y ago
Wiki User
∙ 13y agoIgneous: Obsidian, Pulmice (PUM ISS) Sedimentary: Sandstone, Siltstone
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Are sedimentary rocks are harder than igneous rocks?
No, igneous rocks are harder than sedimentary rocks on average.
How do igneous rocks from into a sedimentary rock?
igneous rocks mix with metamorphic rocks and they combine together to make a sedimentary rock. the three themes of science rocks are metamorphic,igneous, and sedimentary.
What percent of rocks are metamorphic sedimentary or igneous?
53% igneous, 23% metamorphic, and 24% sedimentary
More often than metamorphic or igneous rocks sedimentary rocks have what?
Sedimentary rocks have numerous fossils
Are unakite rocks Sedimentary rocks Metamorphic rocks or Igneous rocks?
metamorphic
How are igneous and sedimentary alike?
Both are composed of minerals. Some sedimentary rocks contain pieces of igneous rocks.
What are three types of rocks?
igneous, sedimentary, metamorphic
Are sedimentary rocks are harder than igneous rocks?
No, igneous rocks are harder than sedimentary rocks on average.
Can Metamorphic rocks can form from igneous but not from sedimentary rocks.?
Metamorphic rocks can form from both igneous and sedimentary rocks
Can metamorphic rocks can form from igneous but not from sedimentary rocks?
Metamorphic rocks can form from both igneous and sedimentary rocks
Is porphyritic texture is not a feature of sedimentary rocks?
Porphyritic texture is a feature of some igneous rocks, not sedimentary rocks.
How do igneous rocks from into a sedimentary rock?
igneous rocks mix with metamorphic rocks and they combine together to make a sedimentary rock. the three themes of science rocks are metamorphic,igneous, and sedimentary.
Can metamorphic rocks form form igneous but not from sedimentary rocks?
Metamorphic rocks can form from both igneous and sedimentary rocks
What are 3 major rock types?
Igneous Rocks,Sedimentary Rocks,Metamorphic Rocks.
Name the 3 kinds of rocks?
There are three major types of rock: igneous (formed from the cooling and solidification of magma or lava) sedimentary (laid down as sediments) and metamorphic (changed by heat and/or pressure)
What is the name of all three rocks sedimentary igneous and?
Sedimentary, igneous and metamorphic.
Which rock would be harder to break with a hammer a sedimentary rock or an igneous rock?
You would normally think that an igneous rock would be harder to break. However, it completely depends on which igneous rock is being compared to which sedimentary rock, as their resistance to breakage is so varied. There are some igneous rocks (obsidian and pumice, for example) that would break much easier than some sedimentary rocks, such as chert or flint.
