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Following on from yesterdays post on Arthurs Seat, here is a brief post on Castle Rock which Edinburgh Castle sits upon.  Edinburgh Castle atop the volcanic plug from wikipedia. Castle Rock is the remains of an ancient roughly 350 million year old volcanic plug. A volcanic plug forms when magma within a conduit solidifies. Castle Rock has also shielded the sedimentary rock during glaciations which has allowed the formation of a sloped end. The rock itself is called Dolerite, which is a type of Basalt. Dolerite cools more slowly than other basalts and as a consequence can often have larger crystals.  29/8/2012 12:26:25 am
Nice blog about the castle rock.I like the blog post to read.Thanks a lot. 18/6/2012 01:37:23 am
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I really appreciate your work especially the research part of it which made the whole point very easy to understand. 25/7/2012 02:13:54 am
Wow...Amazing pic of castle rock. Beautiful rock. Thanks for giving information about castle rock. 4/10/2012 01:14:26 pm
It's a solid rock. The castle was built very long ago, then the builders found the rigtht place to build the castle and to be sure that it will stay for many years. 14/10/2012 10:41:21 pm
I am appreciating your effort to write it! Looking forward to another great article. Good luck to the author! All the best. 19/1/2013 11:03:57 am
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