Question

The ____ are the primary source of all other rocks.
(A) Sedimentary rocks
(B) Igneous rocks
(C) Metamorphic rocks
(D) None of these

Answer 1

Hint:
It is made from cool and strengthened magma or lava and occurs in a variety of landscapes: shields, platforms, orogens, basins, large aquatic regions, expanded crust and sea crust.


Complete solution:
Empty rocks are called primary rocks because these are the first to form on all rocks during the formation of the earth's crust in cooling, stabilizing, and combining hot and water glams after the earth's emergence. Therefore, all of the following rocks are formed, either directly or indirectly, from bare rocks in one way or another. which allowed this extraction, and/or other pre-existing molten rock. Their perfect age can be obtained from a variety of radiometric cooling and thus can be compared to a line adjacent to the geology of the earth, allowing for the sequence of events. They are often similar to the specific tectonic nature, which allows for tectonic reconstruction, in some special cases they hold important deposits (ores): for example, tungsten, tin and uranium are often associated with granite and diorite, while chromium and platinum ores are commonly associated with gabbros.

Additional Information: Igneous rock (derived from the Latin word ignis meaning fire), or magmatic rock, is one of the three major types of rock, some of which are coral and metamorphic. Igneous rock is formed by cooling and strengthening magma or lava. Magma can be found in the melting of part of the earth's crust or in the crust.


Hence, the correct answer is option B.

Note:
Igneous and metamorphic rocks form 90-95% of the 16-kilometre high plateau of Earth's crust by volume. Igneous rocks make up about 15% of the earth's current surface. Most of the ocean floor is made of hollow rock.