If there are any evidences that the underground water flows in any direction, then the drains should preferably run out at right angles to this direction, to intercept as much water as possible.
It is always difficult to detect the direction or flow of underground water, and various technical and delicate methods have been selected to make this determination.
A large amount of money has been wasted upon, and much mystery and superstition has surrounded so-called "water witches," or those who claim some special or supernatural power of locating supplies of underground water.
This is known as petrifaction which takes place when a plant or hard part of an animal has been replaced, particle by particle, by mineral matter from solution in underground water.
Casts of organisms or parts of them are formed by filling shells or molds with sediment or with mineral matter carried in solution by underground water.
This sort of travel of underground water is common in many parts of the world.
The immediate source of underground water, both free and combined, is mainly the surface or rain waters.
In our study of underground water we learned that it is everywhere circulating through the permeable rocks of the crust, descending to profound depths under the action of gravity and again driven to the surface by hydrostatic pressure.
Mineral Veins In regions of folded and broken rocks fissures are frequently found to be filled with sheets of crystalline minerals deposited from solution by underground water, and fissures thus filled are known as mineral veins.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "underground water" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
