What are sedimentary rocks?
Q: What are sedimentary rocks?
A: Sedimentary rocks are rocks formed from sediment that has accumulated over time.
Q: How are sedimentary rocks formed?
A: Sedimentary rocks are formed from matter that falls to the bottom of oceans and lakes, including tiny pieces of other rocks, dead animals, plants, microorganisms, and inorganic chemicals that may be precipitated from water solutions.
Q: What are the other types of rocks?
A: The other types of rocks are igneous rock and metamorphic rock.
Q: What are the most common sedimentary rocks?
A: The three most common sedimentary rocks are limestone, sandstone, and shale.
Q: How much of the Earth's land area is covered by sedimentary rocks?
A: Sedimentary rocks cover 75-80% of the Earth's land area.
Q: What percentage of the Earth's crust do sedimentary rocks make up?
A: Sedimentary rocks make up only 5% of the Earth's crust.
Q: What are the relative abundances of the different types of sedimentary rocks?
A: The most abundant sedimentary rocks are limestone, followed by sandstone and shale.
