Question

The cementation process is:
A.Gel formation
B.Emulsion formation
C.Both A and B
D.None of the above

Answer 1

Hint: The process of cementation can be commonly observed in the construction sites where water is added to the mixture of dry cement, along with sand and small pieces of rocks.
The process of cementation is a necessary step during the construction, as it will be the basic component which will hold the bricks together after it gets dried out.

Complete step by step answer:
Cementation, in the field of geology, welding and hardening of clastic sediments, which are derived from the pre-existing fragments of rocks by undergoing the process of precipitation of mineral matter where the pore spaces are present. It is the final stage in the production of a sedimentary rock. The cement becomes an integral and necessary part of the rock, and the precipitation of it affects the permeability and porosity of the rock. Several minerals might form cements; the most common among all of them is silica, but calcite along with the other carbonates also undergo this process, as well as the zeolites, iron oxides, anhydrite, barite, and clay minerals.

The reverse process of cementation is termed as disSolution. There is some evidence that the process of disSolution has occurred in calcareous sandstones, in that case the calcareous cement or in other words the grains are being broken down in the similar manner as that of the Solution of limestones.

Since we know that the cementation process in which the hardening of cement takes place during the process of construction. This process starts just after water is being added to the mixture of cement, sand and small pieces of stone. In this process, a product having a gel type nature is being formed which gets hardened and thickened with time. So, we can say that the process of cementation is the process of gel formation.

Hence the correct option is option A.

Note: During the process of cementation, after adding water to the mixture of sand, cement and the small stones, during constructions, the cement gradually becomes thick and hard.
-During this process it forms a gel like substance, hence the cementation is the process of gel formation.