naturally polished slickenside rock corona heights park san francisco |
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| navigate by keyword : 100 are coming corona earths embedded event francisco franciscos grooves heights indication movements natural naturally nearly nthis one outcropping park plates polished rock san slickenside tallest tectonic that their two when world |
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| Slickenside is a natural rock that is polished when coming between two of the earths tectonic plates during their movements. The embedded grooves are an indication of the plates movements during the event.
This outcropping at San Francisco`s Corona Heights Park is one of the tallest in the world, at nearly 100 ft. |
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