Location 4

St. Thibéry.

The next outcrop is across the railway line and down the road opposite the cemetery.

Outcrop 4.

This outcrop appears to be similar to the basaltic unit back at locality 3. It is an agglomerate. This whole unit, which is about 2m high and 3 m wide, contains bombs.

Picture 4:

This is a bomb.This is a bomb.

This picture shows outcrop 4.

 Click on the image to enlarge

The bombs show evidence of plastic deformation. This occurs when a solid deforms in a plastic manner and so it bends and curves instead of breaking as brittle deformation would exhibit. This deposit is interpreted as part of a spatter cone [or possibly a rootless cone on a lava flow? - RJS, 2013]

Now proceed to Location 5 or back to Location 3.

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