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BDAS Bridgwater Building Stones Research Meeting

Dr Peter Cattermole 20 June 2009


Propositions
Stone
S1Misplaced Hamstone within a matrix of Lias & Wembdon sandstone implies a post-Reformation structure
 
S2Only the oldest walls contain conglomerate pebbles
 
S3The older the wall, the greater the proportion of Wembdon sandstone
 
S4Later red sandstone walls contain a greater proportion of brecciated stone
 
S5Coursed Lias walling is later than 13th C.
 
Mortar
M1The oldest mortars are the most coarse-grained
 
M1Lemma1the mortar matrix contains red brecciated fragments
M1Lemma2the mortar matrix contains lumps of lime >1mm diameter
 
M2The oldest mortars are the most red in colour
 
M3Younger mortars contain grains of black material
 
Brick
B1Older bricks are yellow not red or orange, irregular, and laid with a wide joint >10mm thick

Web page dated 17 June 2009