I'm not a geologist, I am a hiker. And after many hikes in California's Sierra Nevada and Utah's red country I figured it would be great to learn some geology and I'm just posting this question to see if I can get some clarity. Obviously, I don't know what I'm talking about and my experience is limited to reading a book, so I'd very much appreciate your opinion on what I saw on a hike today.
The hike was to strawberry peak (San Gabriel Mountains/Angeles National Forest) looking at rocks and wondering if someone can validate what I think they are :D
I was expecting to see mostly rocks like this - I think this is granite with coarse crystals - igneous rock from down deep in the earth (hand for size reference) - I believe I have this right to call this rock granite? And also that it was formed deep in the earth in a magma chamber and pushed up in whatever episode built these mountains?
This also looks like granite, is that correct? What would make the layers and straight lines in this formation? The cracks I believe are from the stresses of the rock getting uplifted and surfaced but I don't know about the lines in the rock itself
What I was not expecting to see was stuff like this - which seems to me like sedimentary rock because of the layers and the fact that I could very easily pull off straight layers from it without any force at all:
Lastly there is what seems like a quartz vein inside this sedimentary(?) rock, is this just another layer of the rock or what type of process could inject quartz (or whatever this is) into the rock?
Thank you in advance!