30 



Mr. De la Beche on the Lias of the Coast of Dorset. 



Light-coloured marl 



Dark marls, with nodules of indu- 

 rated marl .... 



Light-coloured marl, with lumps of 

 gypsum .... 



Dark marl .... 



Indurated light-coloured marl . 



Light blueish-green marl . 



Indurated light-coloured marl . 



Light blueish-green marl . 



Light.coloured marl 



Light-coloured indurated marl . 



Light blueish-green marl 



Light-coloured indurated marl . 



Light blueish-green marl . 



Indurated marl 



Light blueish-green marl,with a seam ■» 

 of indurated marl . . J 



Light-coloured indurated marl . 



Light blueish-green marl . 



Rather indurated light-coloured marl , 



Light blueish-green marl . 



Indurated light-coloured marl . 



Light blueish-green marl . 



Light-coloured marl 



Indurated marl, the top and bottom •» 

 of the bed of a red tint . ' 



Light blueish-green marl with a tint -> 

 of red . .... J 



Blueish-green indurated marl,with a 

 red tint in some places . 



Thickness, 

 Ft. In. 

 . 5 



} 



6 



8 



7 



10 



8 



2 



8 



8 



Thickness. 

 Ft. In. 



Thin seam of marl . . . .00 



Light-coloured indurated marl . .04 



Thin seam of marl . . . .00 



Light-coloured indurated marl . .02 



Marl, with two dark grey seams . 2 



Thin seam of rose-coloured gypsum . 



Light blueish-grey marl . . .16 



Marl tinged with red . . .07 



Blueish-green marl . . . .06 



Indurated marl of a reddish tint . 8 



Dark blueish-green marl . . .08 



Indurated marl of a reddish tint . 5 



Dark blueish-green marl . . .07 

 Thin seam of rose-coloured gypsum* 



Indurated marl of a red tint . .06 



Dark marl . . . . .30 



Indurated light-coloured marl . 2 



Light-coloured marl . , .20 



Thin seam of dark marl . .00 



Indurated marl, of a red tint . .10 



Seam of dark blueish-green marl .00 



Marl of a red tint . . . .05 



Blueish-green marl . . . .12 

 Indurated light-coloured marl . 

 Blueish-green marl . 

 Marl with a red tini 

 Blueish-green marl . 

 Indurated light-coloured marl . 

 Light blueish-green marl . 

 Alternation of red and blueish- 

 green marl .... 



} 



10 



1 6 

 7 

 10 

 8 



2 



7 



The total thickness of the red marl beds exposed between Culverhole and 

 Axmouth Points may be about one hundred and twenty feet ; the section 

 exhibiting a few small faults, and a considerable curvature of the strata. After 

 numerous alternations of blueish-green and red marl, the latter colour gra- 

 dually becomes predominant, with a few occasional patches of green. The 

 blueish-green patches, in the lower part of the section above given, afford 

 traces of gypsum. 



* At Branscombe, where a deeper part of the red marl section is exposed, gypsum is much 

 more abundant ; and mountain leather, or mountain paper, sometimes containing small crystals 

 of celestiue, occurs along with it at that place. 



