| Answer | Crossword Clue |
|---|---|
| FAULT | Dislocation of a rock stratum. |
| aquifer | a water-bearing stratum of permeable rock, sand, or gravel |
| porosity | the ratio, expressed as a percentage, of the volume of the pores or interstices of a substance, as a rock or rock stratum, to the total volume of the mass |
| heave | displace (as a rock stratum) especially by a fault |
| pockets | A cavity in a rock or stratum filled with ore or other distinctive component |
| SEAM | Stratum of rock |
| seam | thin layer or stratum (as of rock) between distinctive layers |
| seams | thin layer or stratum (as of rock) between distinctive layers |
