Fingal’s Cave

 

Fingal's Cave, Staffa

Fingal’s Cave, Staffa

Viewed from the approach with Staffa Trips last week.

Okay, I’m still getting used to using Lightroom and the tobacco filter on the sky might be a little heavy, but I’m pleased with the seawater.

Advertisements

5 thoughts on “Fingal’s Cave

  1. For what it’s worth, my own photos of columnar basalt (Giants Causeway) are at Time turned to stone, Part 2: The Giants’ Causeway; time as process https://paulbraterman.wordpress.com/2014/12/14/time-turned-to-stone-part-2-the-giants-causeway-time-as-process/ http://wp.me/p21T1L-oc

    Do you know why there is this sharp cut off between the columnar basalt and the rock above, which also looks (as far as I can tell from the photo) very similar? Any chance of getting a higher resolution image? No quarrel with the aesthetics, but scientifically the more detail the better

    Like

  2. Wikipedia she say: “It consists of a basement of tuff, underneath colonnades of a black fine-grained Tertiary basalt, overlying which is a third layer of basaltic lava without a crystalline structure. By contrast, slow cooling of the second layer of basalt resulted in an extraordinary pattern of predominantly hexagonal columns which form the faces and walls of the principal caves.” It would appear to be down to the rate of cooling of the basalt.

    Like

      • Here’s a seemingly-different explanation from http://www.geolsoc.org.uk: “As the newly-formed basalt lava cooled, it contracted and broke into sections which, in the lower part of the flow, produced regular 6-sided columns. The rubbly upper part of the flow contains many gas bubbles trapped as the lava solidified, and so did not break as evenly.”

        Like

      • That figures. As lava solidifies, dissolved gas becomes more concentrated in residue, until that becomes saturated and subsequent coling gives lava with air pockets. And since these pockets can expand, the tension that leads to columnar fracture never has a chance to build up

        Liked by 1 person

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s