Figure F121. Close-up of calcareous siltstones (interval 210-1276A-87R-6, 2-38 cm) overlying the upper contact between the upper sill and the overlying sediments. Porphyroblasts increase in size downsection over the interval 210-1276A-87R-6, 6-55 cm. Note the folded subvertical vein.

Figure F121. Close-up of calcareous siltstones (interval 210-1276A-87R-6, 2-38 cm) overlying the upper contact between the upper sill and the overlying sediments. Porphyroblasts increase in size downsection over the interval 210-1276A-87R-6, 6-55 cm. Note the folded subvertical vein.