| 1. | Younger rock units, if they ever existed, have been removed by erosion.
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| 2. | The source for the uranium was most likely local volcanic rock units.
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| 3. | Assigning absolute ages to rock units on Mars is much more problematic.
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| 4. | These sediments are deposited on the rock unit that is going down.
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| 5. | The Upper Cretaceous rock units confine the Edwards Aquifer within the group.
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| 6. | These variations provide a lithostratigraphy or lithologic stratigraphy of the rock unit.
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| 7. | This rock unit is formed by quartzites, meta-black shales, amphibolites and skarns.
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| 8. | The youngest rock units consist of rough terra and smooth plains materials.
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| 9. | Hardly anyone realizes that Newman once screamed in the heavy-rock unit Superconductor.
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| 10. | The rock units within this arch have been major oil producers.
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मोबाइल