Is all land on earth basically originally volcanic rock?

Answer 1

luka has the best answer here and I'll expand on that a little.

No is your answer. But if you had asked "igneous rock" rather than "volcanic rock" then you would get mostly a yes answer.

Rocks are classed into 3 categories: igneous, metamorphic and sedimentary.
A volcanic rock is a type of igneous rock, both are made from magma. Magma has to erupt at the surface for it to become a volcanic rock.
The majoirty of igneous rocks solidify below the surface. Plutonic rocks (such as granites) are one example, but dykes and also sills are another.
Origianally, in early earth, all rocks would have been igneous. There was a lot of kinetic energy around.

Metamorphic rocks are rocks that are heated or put under pressure (or both) to change the chemistry of the grains. Metamorphic rocks can originate from igneous or sedimentary (or other metamorphic rocks)

Sedimentry rocks are derived mainly from particles of other eroded rock. eg sandstone. The grains in sandstone must have either come from either igneous rocks, or from metamorphc and sedimentary rocks that originally derived from igneous rocks.

The anomalies to this would be the rocks that luka d mentioned. Carbonate rocks, diatomites, chert, coal, or evaporites.
The carbon from the coal and carbonates is unlikely to have been part of an igneous rock, but the origin of the carbon would have been carbon dioxide from volcanos. Of volcanic origin then?
The diatomites and cherts would have got their silicon from particles dissolved in water. The origin of this silicon would be igneous quartz.

If in early Earth, all was igneous then originally everything must have been derived from igneous rocks or the gasses from those rocks.
If anyone says otherwise, then can they point out a rock that has survived from early Earth that hasnt been altered?

Meteorites are not derived from igneous material. Unless...

Answer 2

No. Think about it - what does sedimentary mean?
You may be thinking about how the earth was formed and because it was molten, you may consider that to be volcanic. Its not the case.
The earth accumulated all sorts of debris in its initial formation stage and this was from gravity pulling in increasingly large particles until mini planetoids were produced. These also came together and the energy created caused the heat to further fuse the molten mass.
The earths crust sits on molten rock - magma and when a volcano spews out the magma it forms volcanic rock. There are other rocks formed in different ways but their origin was indeed the molten mass which was the earth was formed.
I hope this helps.

Answer 3

If you have ever seen Volcanic Rock you would know that the answer is no. The Earth is composed mostly of Iron. Take a magnet and run it through the ground just about anyplace you happen to be and you will collect Iron particles.

Answer 4

No. But lots of the land is..especially if you want to expand your question to include all igneous rocks (both volcanic and plutonic), all metamorphosed igneous rocks, and those sedimentary rocks made of particles eroded from igneous or metamorphosed igneous rocks.
But, large mappable areas are made of sedimentary rocks whose components were not derived from igneous or meta-igneous rocks: carbonate rocks, diatomites, chert, coal, or evaporites, ---or metamorphosed versions of these rocks (such as marble).

Answer 5

well my friend if all earth was volcanic rock than it must have immence anount of nickle and aluminum and cobalt and clorine and florine and other extremely strong acids which can destroy our life style.
volcanic rock have its own magnetic field which effects the earth magnetic field and force it to change it the earth magnetic field is becaz of parmanent in the earth core i.e.(Al Ni Co) these are the element that made parmanent magnet

Answer 6

lots is sediment too, like ocean bottom rock.