[Reports volI-XIII] . COUJ zoI-co UJ < NO CO Occ UJ zo CO < o UJ s ccO O o z 3 GENERAL STRUCTURE. 37 It has been intimated that there is probably a well-markedphysical break in the Magnesian limestone series at the top ofthe Second limestone. The present in dications point stronglyto the supposition that the calcareous members of the seriesbelow the line mentioned practically form one great limestoneformation, with numerous intercalated lens-shaped beds ofsandstone, arranged largely perhaps as already explained. For the entire Magnesian series—embracing the sevennumbers of Swallow—Broadh
[Reports volI-XIII] . COUJ zoI-co UJ < NO CO Occ UJ zo CO < o UJ s ccO O o z 3 GENERAL STRUCTURE. 37 It has been intimated that there is probably a well-markedphysical break in the Magnesian limestone series at the top ofthe Second limestone. The present in dications point stronglyto the supposition that the calcareous members of the seriesbelow the line mentioned practically form one great limestoneformation, with numerous intercalated lens-shaped beds ofsandstone, arranged largely perhaps as already explained. For the entire Magnesian series—embracing the sevennumbers of Swallow—Broadhead* has recently given the nameOzark. If in future it seems advisable to separate the First Lime-stone and Sandstone from the underlying strata, Broadheads
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