One caveat: If your toddler is overweight, at risk for becoming overweight, if you have a family history of obesity, high blood pressure or heart disease, your pediatrician may recommend that your toddler drink 2% milk from age 1 to 2 instead of whole milk. But don't give her 1% or skim milk before age 2.
The final sediment thus reflects the energy of the transporting medium. Lithification (Diagenesis) - Lithification is the process that turns sediment into rock. The first stage of the process is compaction. Compaction occurs as the weight of the overlying material increases. Compaction forces the grains closer together, reducing pore space and eliminating some of the contained water. Some of this water may carry mineral components in solution, and these constituents may later precipitate as new minerals in the pore spaces.
POROSITY AND PERMEABILITY. Pore spaces are important because they can hold oil and gas, water for water supplies and deposits of hydrothermal minerals. The amount of pore space in a rock is called its. porosity.Volume of pore space. Porosity = ----------------------------------- x 100.Total volume of rock.lay in particular loses porosity through this process, whilst sandstone often lose porosity as calcite and silica minerals grow in the pore spaces. Permeability. is the measure of the ease with which fluids can pass through rocks.