| 1. | The beds maintain their identities . 地层保持它们的均一性。 |
| 2. | Strike direction is not established . 地层走向不能确定。 |
| 3. | The glauconite sandstone is a persistent stratigraphic unit . 海绿石砂岩是一个稳定的地层单元。 |
| 4. | The component layers have the geometry of stratigraphic units . 成分层具有地层单元的几何形态。 |
| 5. | Faults disrupt strata . 断层错断地层。 |
| 6. | Stratigraphy studies the sequence of the rocks in the earth's crust . 地层学研究地壳中岩石的层序。 |
| 7. | Conformity is a surface that separates younger strata from older rocks . 整合面是一个分隔新老地层的面。 |
| 8. | The targets in oil exploration are deeper than in mineral respecting . 石油勘探的目地层比矿物勘探的深。 |
| 9. | The gas accumulation is controlled entirely by stratigraphic parameters . 气的聚集完全受地层参数的控制。 |
| 10. | A line of springs is found frequently at the contact of two formations . 在两个地层接触处常会有一排泉出现。 |