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| node: | 09.09.2017-15:05:46 |
| template: | 4 |
| parent: | Neživé, chladné a anorganické |
| owner: | ahram |
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| created: | 09.09.2017 - 15:05:46 |
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cwbe coordinatez: 101 63564 3963683 8392486 ABSOLUT KYBERIA |
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| you: | r, |
| system: | public |
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Layers form at the bottom of the ocean as rocks and sand accumulate, but when the Earth is covered in ice, the layers thin as less sediment is deposited. Meanwhile, larger rocks and boulders sit on the surface of the ice, where they are carried along as the ice sheets move. When the ice melts, these boulders fall the ocean floor, where they disturb the already formed layers before being slowly encompassed by new sediment deposits.
Embedded in a rock face in this remote valley, large boulders were within fine sedimentary layers that had been disturbed by the heavier rock being dropped onto the fine seafloor sediment. It’s a rare geological phenomenon and one that helped prove the Snowball Earth theory.