previous index next
 
LA1003: Rhaetic Tea Green marls at Blue Anchor, Somerset. At the base of the Jurassic in Britain there was a marine transgression that changed the conditions from desert to shallow water marine sediments. The Tea Green Marls are full of shoreline features such as sun cracks, ripple marks, even trace impressions of ice crystals. The pink horizons are evaporite deposits, typically pink gypsum, that formed under conditions similar to the Persian Gulf today.
   
 
   
   
   
 

 Micromacro home published work email Sinclair Stammers crystals fossils micro-organisms science natural history landscapes people