Question Description
I’m working on a geology discussion question and need support to help me learn.
Answer Part I and II
Rock Cycle Overview (Links to an external site.)
Igneous Rocks Origin and Formation (Links to an external site.)
Bowens Reaction Series (Links to an external site.)
Detrital Sedimentary Rocks (Links to an external site.)
Part I.
- Arrange the following 5 steps needed to form a detrital sedimentary rock from a previously existing rock (Transport, Deposit, Cement, Weather, Compression).
- Embed (DO NOT ATTACH – we must be able to see the picture in the discussion) picture from the web of a sedimentary rock type of rock (detrital) that could have formed in the steps you arranged above. Please cite your resource.
- What is your rocks Rock Cycle Story: create a narrative rock cycle story that includes all 5 sedimentary rock-forming steps you listed above. Be specific: where/how did the detrital rock particle originate (what original rock was it part of?), what weathering mechanisms were involved, how did your rock move on the earth to the position in which it now resides as PART of a sedimentary rock, where was it deposited, how did it become part of a larger sedimentary rock? (Remember: you are following a chunk of rock that is now incorporated into a larger sedimentary detrital rock)
- example: a chunk of andesite solidified from in the Cascad mountains, was exposed, weathered by snow and ice and and transported by rivers to the Oregon coast where it was deposited/buried on the beach as sandy sized particles. Over time pieces of the andesite were compressed into light/dark speckled sandstone rock.
- What does the size of the particles in your sedimentary rock tell you about the environment in which the particles settled (Make sure you are using the correct particle size terminology “gravel,sand,silt/mud,etc)
To EMBED your picture: Find and Save an appropriate image from the web to your computer. Once you “Reply”, use the Upload/Embed your Image icon in the menu banner on top of the edit/reply box.
Part II.
- Classify (and identify) both of the igneous rocks in the picture series below and
- Explain differences between a felsic and mafic igneous rock.
Ex. Felsic intrusive igneous rock, possibly a granite based on
Source: Michael C. Rygel via Wikimedia Commons. This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.”
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