NO5201 : Pyroclastic breccia

taken 11 years ago, near to St Monans, Fife, Great Britain

Pyroclastic breccia
Pyroclastic breccia
Three very knowledgeable people kindly gave their expert thoughts on what this is. All three said it was a pyroclastic breccia.

The following is my abridged version of their emails and any errors are mine alone.

Basically what you have here is a pyroclastic breccia consisting of angular blocks of sedimentary rock and maybe even some ragged to blobby bombs of pale basalt.

The bluey grey tuffaceous matrix is probably mostly finely comminuted sediment, the local country rock is largely limestones and mudstones but maybe this has some bluish chlorite, some carbonaceous material perhaps or just a blue cast to the photograph.

Thanks to ...

Professor Barry Dawson
Professor Brian Upton
Dr David Stephenson

and special thanks to Anne Burgess for making the contacts.
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NO5201, 224 images   (more nearby )
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Date Taken
Monday, 25 June, 2007   (more nearby)
Tuesday, 26 June, 2007
Geological feature   (more nearby)
Subject Location
OSGB36: geotagged! NO 520 012 [100m precision]
WGS84: 56:12.1072N 2:46.4273W
Camera Location
OSGB36: geotagged! NO 520 012
View Direction
EAST (about 90 degrees)
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Image classification(about): Geograph
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