San Andreas Lake (from which the fault takes its name) is a ``sag pond'' that naturally formed in the valley of the San Andreas fault. Strike slip faults are good places for lakes; the fault both creates a low spot to collect the water, and grinds up the rock underneath making an impermeable layer to hold the water in.
In addition to providing us with shape and support for our skeleton, minerals are the âspark of life.â Minerals are essential in the diet and each plays unique and often multi-factorial roles as they act at all levels of the body â cells, tissues, organs, and the whole organism.
Calcium is the most abundant mineral in the body. Calcium's primary function is to build and maintain skeletal tissue. Ninety-nine percent of the body's calcium supply resides in the bone and teeth. Osteoblasts are bone-forming cells in which calcium phosphate is deposited. Ameleoblasts are the tooth- forming cells that deposit calcium to form teeth. Calcium has many other important functions in the body even though only 1% of the body's calcium performs these functions. Calcium is involved in maintaining the stability of fibrin, which allows blood to clot. Calcium is required for the transmission of nerve impulses.