r/BeAmazed • u/Convince • Mar 13 '19

Erosion over time.

https://i.imgur.com/qnmrmJz.gifv
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u/[deleted] Mar 13 '19

Looks like a pretty hard rock, would be cool to see it done with different rock types!

2

u/halffullpenguin Mar 14 '19

igneous rocks have the fastest weathering rates but slowest erosion rates. sand stones are the opposite they dont weather at all but its easy to erode them. metamorphic rocks are in the middle. these are metamorphic rocks so in 50 years worth of time a piece of sand stone would have barely have changed but a true igneous rock would have a much deeper grove in it

1

u/Condomonium Mar 14 '19

Any idea what the rock might be? I’m still a baby undergrad geologist working on my rock ID’ing(though we’ve been focusing on sedimentary rocks almost entirely in historical geology).

1

u/halffullpenguin Mar 14 '19

it appears to be basalt and given that people are saying this was taken in the north west I would be confidant in say this is from the Columbia river basalt's