Ramblings about what I encounter within the realm of the geosciences, as well as the occasional rant about nonsense.

28 September 2008

Edinburgh, Geology's Ancestral Homestead

One of the things that I have noticed about UK cities is that they all seem to have, at their heart, some neat geological feature. In Edinburgh's case, it is a volcano. Edinburgh castle is built atop a batholith that cooled during the Mississippian (~340 Ma old).

Features of this volcano are present throughout the landscape. This includes Salisbury Crags (or Craigs, I have seen it both ways). The crags are columnar basalts which are interpreted to be a sill associated with the Mississippian volcanism. Anyway, following are some of the pictures I took within the city of Edinburgh. If our major cities incorporated more geology, I think I wouldn't avoid them.

Below is a complete picture of Edinburgh Castle, including the batholith peeking out beneath the castle:Below is a close-up of the castle. The basalt is a bit clearer in this photo:
The Salisbury Crags (taken from a tour bus). At some point, I would like to come back and go for a hike on the trail around the Crags:A close up of the columnar basalt at the Crags (also taken from a bus):

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All the Latin on this page is from my vague recollections from High School. There are mistakes in the text. I just was trying to get the point across

Between Los Alamos,NM and White Rock, NM

Between Los Alamos,NM and White Rock, NM
The photo of the travertine spring was taken in the small opening in the center of the image.

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