Because of Mount Dooms constant activity, it is growing due to the nonstop deposit of tephra and hardening lava. The lava that is being emitted from this volcano is felsic, which is more viscus and explosive. It is also clear from this picture that Barad-dûr, the tower with the eye of Sauron on top, was constructed on volcanic neck or dike. This is a result of magma formations underground being exposed by erosion. There are also dikes that continue from Barad-dûr all the way to Mount Doom itself showing there are large systems of underground magma flows.
It is clear that the rock on the surface of the volcano is jagged which indicates thats it is A'a basalt rock; A'a meaning the basalt (an igneous rock) is sharp and has a rough surface, which you can see from that picture.
Pictures links:
http://therookiecynic.files.wordpress.com/2010/10/mordor.png
http://www.tolkienforums.com/Mount_Doom.jpg
Well, this blog is awesome, I love Lord of The Rings, so congratulations, you got creativity points in my book! You got some fantastic pictures too, but aside from that I enjoyed your description of the volcano's activity and how it attributes to the overall growth of the volcano. I also enjoyed that you explained why the surface of the volcano looks to be so jagged! Nice work.
ReplyDeleteI really enjoyed learning about this area of Middle Earth. I thought it was interesting to learn about the area that Barad-dur is located on, I never really thought of the area in that way. I wonder though, with this environment constantly changing, how can there be life in this area? It seems like such a desolate area. Anyway, great blog, I look forward to learning more about Middle Earth!
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