| A | B |
|---|
| bold | a type of emphasis |
| sinkhole | a subsidence feature |
| subsidence | the downward movement of surface material |
| groundwater | subsurface erosion due to the failure of existing utility lines |
| metamorphic | is marble |
| carbonate sediment | is composed in limestone |
| carbonate mineral calcite | is composed in rigid skeleton |
| cement | holds bricks together |
| unconsolidated | loose |
| lithified | turns to rock |
| calcium carbonate | the chemical composition of calcite |
| noncarbonate | contain minor amounts of impurities |
| base | considered to be limestone |
| carbonic acid | the carbon dioxide gas reacts with water |
| beds | distinct layers |
| bedding | one bed overlying another bed |
| laminae | where the beddings are less than 1 centimeter thick |
| fractures | distinct break |
| bedding planes | distinct planar between the fractures |
| faulting | bedding can be broken and displaced in a horizontal or vertical direction |
