Storyboard Szöveg
- My story began nearly 60 million years ago as hot lava erupted from a volcano. Upon exposure to the cool temperatures of Earth's surface, I immediately solidified into what they call an "extrusive igneous rock".
- Since I cooled so quickly from lava to a rock, there was no time for crystals or grains to form, and I was smooth
- Being a young volcanic rock was tough. It wasn't easy to withstand the frequent weathering. Ice, wind, and rain scratching me every day. Eventually, I noticed fragments of myself chipping off.
- I realized then that I was undergoing erosion. I saw my fragments float away with the rain to a faraway stream. Over the course of 15 million years, I joined my fragments in the stream. It was difficult to say goodbye to my life as an obsidian rock. I could no longer see the ocean either, it was a vast landscape with trees and other rocks everywhere.
- Dissolved minerals started crystallizing in the open pores of the rocks, which is what scientists call cementation. The minerals filled the available gaps, creating a more stable and cohesive form of my new self. I remember that I was a clastic sedimentary rock because my composition consisted of sand, gravel, and other assorted rock fragments.
- While underground my sediments got pushed together with extreme heat and pressure that started to turn me into a metamorphic rock.
- Then finally after a few million years I transformed into a metamorphic rock and that was my final stage in the rock cycle.The End.
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