greywacke rock and wild grass davidson san francisco
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greywacke rock and wild grass davidson san francisco |
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| navigate by keyword : all and are avalanches causing characteristics davidson different form francisco franciscos get grass greywacke heaves highest hills lichen mixed much natural one only patters point produced recently rippled rock rocks san sediment that this together top types understood underwater unusual was ways wild |
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| Much of San Francisco`s hills rocks are Greywacke, a form of rock that was only recently understood. It is produced by underwater avalanches, causing different types of sediment to get all mixed together in unusual ways. The rippled patters on the rock is one of the characteristics. This is the top of Mt. Davidson, the highest natural point in San Francisco is 977 feet. |
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Stockphotos.ro (c) 2024. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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