Merrill, George P. · John Wiley & Sons, Chapman & Hall, Ltd., · leaf 146
ed in this group originate either asmechanically accumulated sediments on sea bottoms or asdirect deposits from solution; by far the larger and most im-portant part belongs to the sedimentary accumulations, whichmay or may not have undergone metamorphism. Formed as sediments, they naturally show… … Map Showing Areas of Triassig Sandstone in the Eastern United States. To face page m + * - SANDSTONES, BRECCIAS, AND CONGLOMERATES. 123 sive to shaly portions, are common. Among the calcareousmembers there is, for any given locality, a greater uniformityin texture, but, perhaps, an even greater…
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