contestada

Which of these rocks are formed by erosion and deposition? Select the two correct answers.

A. Basalt

B. Granite

C. Limestone

D. Sandstone

E. Marble

Respuesta :

The correct answers are LIMESTONE AND SANDSTONE. These two rocks are examples of metamorphic rocks. Metamorphic rocks are formed by two distinct processes: by chemical and physical weathering. Physical weathering involves the breaking down of the soil particles by element such as water, wind, heat, pressure, etc. The broken particles are transported by wind and water and to another located where they will be deposited. Overtime, the deposited particles will be compacted and cemented together.

Answer:

Options (C) and (D)

Explanation:

During the process of weathering, the rocks are broken down into smaller and finer particles. These are commonly known as sediments, which are transported from one place and are deposited in another place. These sediments after being deposited are subject to compaction and lithification, resulting in the formation of sedimentary rocks. Some of the rocks formed by this process are sandstone, limestone, siltstone, mudstone, and dolostone.

In the given condition, Limestone and Sandstone are the two sedimentary rocks that are formed from the erosion and deposition of sediments.

Sandstone is dominated by sand particles and limestone are carbonate minerals dominated by calcite. They are often found to contain shells of various fossilized organisms.

Thus, the correct answers are options (C) and (D).