How Does Water Move through the Ground?
ES1401  Rock Types

The simulation showed filling rates for wells drilled into sandstone, shale, and limestone. Sandstone and shale are both composed of individual rock particles with pore spaces between the particles. Limestone can hold water only if cracks and cavities have been dissolved in the solid rock.

  !   Click each rock to see a photograph of that type of rock. Click again to see a visualization of water moving through the microscopic structure of the rock. Note that the scale of the microscopic images is not constant.

Jennifer Loomis, TERC

3. What differences do you see in the material of each rock layer? Describe particle size, particle shape, and the general shape and number of pore spaces in each rock.

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