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No. Granite forms from magma, which is liquid rock. There are gasses trapped in the magma, but they only make up a small portion of it.

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If a mass of granite is in contact with a layer of sandstone that contains small pieces of the granite which rock is older?

The granite would be older because it had to form first in order for the sandstone to contain pieces of it. The sandstone would have formed later on top of the granite layer.


Does granite form from magma?

Yes, granite forms from the slow cooling and solidification of magma deep within the Earth's crust. As the magma cools, minerals such as quartz, feldspar, and mica crystallize and combine to form granite. This process typically occurs over millions of years.


How does granite form into Obsidian?

Granite does not directly transform into obsidian. Obsidian is formed when lava cools very quickly, without giving crystals a chance to form. Granite, on the other hand, forms deep beneath the Earth's surface through the slow cooling and solidification of magma. So, while both are igneous rocks, they form under different conditions.


What igneous rock forms from granite?

Granite is already an igneous rock. If the granite simply melts and re-solidifies it will become granite again. If it melts and is erupted from a volcano, it will form rhyolite. If it melts and mixes with magma of a different composition, then it could form any number of igneous rocks.


When a granite intrudes into a layer of limestone which is younger granite or limestone?

When a granite intrusion occurs within a layer of younger limestone, the granite is considered older than the surrounding limestone. This is because intrusive rocks form before surrounding sedimentary rocks. If the intrusion occurs within older limestone, then the limestone is considered older than the granite.