. Bulletin of the Geological Society of America. Geology. Figure 1. -Bedding in Slate Quaery, Upper Ordovician, Slatedale, Pennsylvani rhotograph by H. S. Palmer. 1913. Figure 2.—Ribboned Slate^ Upper Ordovician, Slatedale, Pennsylvania The ribbons have a dual division, consisting of carbonaceous mud below and fine-graine<l sand above, emphasized by retouching the photograph UPPER ORDOVICIAN SLATE OF PENNSYLVANIA. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may n
. Bulletin of the Geological Society of America. Geology. Figure 1. -Bedding in Slate Quaery, Upper Ordovician, Slatedale, Pennsylvani rhotograph by H. S. Palmer. 1913. Figure 2.—Ribboned Slate^ Upper Ordovician, Slatedale, Pennsylvania The ribbons have a dual division, consisting of carbonaceous mud below and fine-graine<l sand above, emphasized by retouching the photograph UPPER ORDOVICIAN SLATE OF PENNSYLVANIA. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Geological Society of America. [New York : The Society]
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectgeology, bookyear1890
