− | | Determine if [ http://www.thefreedictionary.com/Detrital detrital] clay is present using depositional environment (i.e., high energy = low clay content). If detrital clay is likely, then expect permeability to be low. | + | | Determine if [http://www.thefreedictionary.com/Detrital detrital] clay is present using depositional environment (i.e., high energy = low clay content). If detrital clay is likely, then expect permeability to be low. |