2007

NO5201 : Pyroclastic breccia

taken 17 years ago, near to St Monans, Fife, Scotland

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.

Creative Commons Licence [Some Rights Reserved]   © Copyright Jim Bain and licensed for reuse under this Creative Commons Licence.
Category: Geological feature
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NO5201, 553 images   (more nearby 🔍)
Photographer
Jim Bain   (more nearby)
Date Taken
Monday, 25 June, 2007   (more nearby)
Submitted
Tuesday, 26 June, 2007
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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