Columnar basalt - a photo on Flickriver

Columnar basalt

            ...off the Ardtun headland, Ross of Mull, Mull.

As Canada and Scotland parted company during the Tertiary Period, volcanos spewed out sheets of lava that solidied as pillars of polygonal section. Had I realised how hazardous the clambering was to get to it I would never have attempted to try....

I was there to find some fossilised leaf mound in mudstone between strata of lava, showing that at some time while the volcano was active, there was a lake boardered by deciduous (oak) woodland. I found some but nothing indicated the structure of a leaf. There were little water rolled pebbles in the mudstone too. It was worth the long trudge over boggy land in the rain, lapwings and curlews overhead. Vaguely interested cows.

Taken on: June 1, 2019

Tags:

Scotland

Mull

Basalt

Ardtun

Tertiary

polygonal « less

Sets appears in: • The Emerald Plant • United Kingdom

Groups appears in: • (A) BEAUTIFUL SCOTTISH ISLANDS AND HISTORY

Camera: Canon EOS 80D, f/10.0, 1/200 sec, 35mm, ISO 400 (more info) (hide info)

Camera:	Canon EOS 80D
Lens:	Canon EF-S 17-85mm f/4-5.6 IS USM
Aperture:	f/10.0
Exposure Time:	0.005 sec (1/200)
Focal Length:	35mm
ISO:	400
Exposure Bias:	0 EV
Flash:	Off, Did not fire
Exposure Program:	Program AE
Exposure Mode:	Auto
Metering Mode:	Partial
White Balance:	Auto
Color Space:	sRGB
Software:	iPhoto 9.6.1
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