File:Beach markings near water's edge 9956.jpg
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Size of this preview: 800 × 533 pixels. Other resolutions: 320 × 213 pixels | 640 × 427 pixels | 1,024 × 683 pixels | 1,280 × 853 pixels | 2,560 × 1,707 pixels | 5,184 × 3,456 pixels.
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English: The black patterns are formed by grains of a mineral called magnetite, an iron oxide. it is a normal part of most sand. When waves wash the sand, the iron, which is heavier than grains composed of other minerals, resists the movement of the water slightly better, and collects in a thin layer on top. As can be seen in this images, the slightest obstacle produces a tapering pattern. This is taken in Costa Rica, not that it matters.... |
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| Source | Own work |
| Author | ImagePerson |
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I, the copyright holder of this work, hereby publish it under the following license:
 
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This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
| The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 00:20, 19 January 2024 | | 5,184 × 3,456 (11.93 MB) | ImagePerson (talk | contribs) | Uploaded own work with UploadWizard |
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