Question

Compared to Earth's crust as a whole, the sedimentary rocks beneath the ocean bottoms are ________?

1) very thin
2) much sandier
3) laid down vertically instead of horizontally
4) not commonly found
5) found almost as deep as is the Moho

Answer 1

The sedimentary rocks beneath the ocean bottoms are generally very thin and occur in layers or beds of various thicknesses. These rocks are composed of sand and silt-sized particles and may contain sediments like mud, shells, or fossils.

Step-by-step explanation:

Compared to Earth's crust as a whole, the sedimentary rocks beneath the ocean bottoms are generally very thin. They occur in layers or beds that can range from a few millimeters to 100 feet thick, with the most common thickness being 1-5 feet. These rocks are made up of sand and silt-sized particles, and may contain sediments like mud, shells, or fossils. Although sedimentary structures are not usually visible in hand specimens, they can be noticeable in outcrops.