Field Notebook: Maryland, Washington, DC 1921
Page 23
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Transcription
As the top layer arenaceous li, with fossils. About 60 feet. 240' Then about 100 feet of dark blue very hard almost cherty limstone gradually becoming more arenaceous towards the top. Almost no fossils. Thick beds ( Hunt block) cherts. Circular 75 feet ( include 6' fels) of at about base 2, flatella? 30 J- 280 J8 - 74 Qno Mary 240' 270 Bucuthyn. z.p. 6 0 3 6.2' ?z m linpton? Blacklist the bedde irregular layer thif Li, L. flatula?? The manofluma chert li. can be seen for 10 feet the other 42 feet around. Is this the end of the Lower shelderby? Very chert macellauga hits seen for ten feet D. macrplena, D. pellucida are D. moorwithays very common at this point. 10 feet onto D. galeatus Q. arcanatidogus, St. annuitata, P. flota A. imedia, theristales clarity cycloste di chert brotalis