[[underline]] 1892 [[/underline]] 
December 18, continued 
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represent the upper 40 feet of the White House Bluff section, as 
described on Dec. 5. In one place on the south side of the first cut on 
the W & A. R.R. the greensand at the level of the railroad bed is very 
well marked, greenish olive colored and may represent a thin bed of 
Pamunkey. No fossils could be found. 
A quarter of a mile further south east a brisk stream flows under the 
railroad to the northwest and cuts down 25 or 30 feet below the tracks. 
In the bed of this stream, in some places forming its bed is a tenacious 
blue clay evidently Potomac (specimen). 
The next cut shows the marine Tertiary very clearly. The upper portion 
weathers a lively red and the base is very dark green and may be 
Pamunkey, and about the same is true of the next. 
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South of the ravine in the fill of which the 13 (22) mile post stands is 
another cut 20 feet deep. At the upper (north) end on the east side a 
gulch has worn down to the ravine, and just opposite the whistle board, 
20 feet below the track the Potomac white and slightly mottled clay is 
nicely exposed. The cut itself consists chiefly of Potomac sand rather 
characteristic with clay pockets in one of which Vick actually found a 
dicotyledonous leaf. A thin bed of Miocene checkered clay overlies the 
Potomac sand & there is red loam over that. The Lafayette cap is about 
three feet thick. 
With the next cut to the south begins the great Franconia gravel bed 
which is treated as Lafayette by Darton. I also regarded it so when I 
visited and part of it must be, but it presents some peculiarities that give 
rise to doubts. It contains clay pockets and lenses of certain Potomac. It 
also has interstratified with 
Local field note-book of Lester Ward 
Transcribed and Reviewed by Digital Volunteers 
Extracted Oct-11-2015 07:35:03 
Smithsonian Institution Transcription Center, Smithsonian Institution Archives 
