Which of the following properties would likely result in a porous rock on the basis of the results of Experiment 2?

Experiment 2
Geologists in Arizona were interested in the porosities of different varieties of sandstone. They documented the relationship between porosity, density, sand particle size, and the uniformity or sorting of the sand grains. The geologists found that, in general, neither density nor particle size affected the porosity if the particles were uniform. However, they did find that in samples with a wide variety of particle sizes, the porosity was generally lower. Also, the presence of contaminants such as clay or silt negatively affected the porosity. The geologists recorded their results in the following diagrams.

F. High density; small particle size
G. Uniform particle size; high density
H. Uniform particle size; low concentration of contaminants
J. Large particle size; low density

Transcribed Image Text:

Porosity Porosity Particle size Uniformity of particle size