https://padlet.com/amkurtz5/rlcg3ebcf5ipwewu en-us 2020-09-26 03:05:22 UTC 2020-09-26 03:12:50 UTC hello@padlet.com https://padlet.net/icons/png/1f30e.png amkurtz5 https://padlet.com/amkurtz5/rlcg3ebcf5ipwewu/wish/781079107 Formed from magma, lava, or volcanic activity.]]> 2020-09-26 03:07:00 UTC https://padlet.com/amkurtz5/rlcg3ebcf5ipwewu/wish/781079107 amkurtz5 https://padlet.com/amkurtz5/rlcg3ebcf5ipwewu/wish/781079731 Formed from compaction and cementation of rock fragments or minerals ]]> 2020-09-26 03:08:09 UTC https://padlet.com/amkurtz5/rlcg3ebcf5ipwewu/wish/781079731 amkurtz5 https://padlet.com/amkurtz5/rlcg3ebcf5ipwewu/wish/781080177 Formed when heat and pressure change the composition or mineral structure of a rock.]]> 2020-09-26 03:08:58 UTC https://padlet.com/amkurtz5/rlcg3ebcf5ipwewu/wish/781080177