Weathering Process. The weathering process occurs when rocks are exposed to the hydrosphere (water) and atmosphere (air).  These agents can change the physical and chemical characteristics of rocks.  As rocks are broken down (weathered), they can be classified as different types of sediments, which are: o boulders, cobbles, pebbles, sand, silt, clay, and colloids. See page 6 of the Earth Science Reference Tables explains the sizes of each of these sediments.
Lagoon is a water body that is formed near coastal areas. It is shallow and has a small link with sea or the ocean though it is also separated from the ocean water with reefs or a low sandbank. Arial view of a lagoon.
If enough sediment is eroded away in one place, it can begin to form erosional landforms. A bay at place where a river meets the sea is an excellent example of an erosional landform. The size, shape, and scope of a bay can vary drastically by the composition of the rocks and soil surrounding it.ven places like the famous Haystack Rock off the Oregon coast is an example of an erosional landform. At one time, this magnificent piece of rock was once a part of a cliff-like shoreline. Over time, the force of the ocean eroded it away.