Which of the following is not a sedimentary rock?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. Granite
While marble and slate are examples of metamorphic rocks, granite is an igneous rock.
- Molten rock and lava solidify to form igneous rock. The major rock is another name for this. For example, basalt and granite.
- Rock fragments deposited by external processes result in sedimentary rocks. The secondary rocks are another name for these. Example: shale, limestone, sandstone, etc.
- Rocks that are metamorphic originated from pre-existing rocks that are recrystallizing. Metamorphic rocks are sometimes known as tertiary rocks. Examples include marble, gneiss, phyllite, schist, and quartzite.