Hi 
| Lilley.] 304 [Dee. 7, 
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Detailed Section of Chemung Rocks Haposed in the Guif Brook Gorge at Le 
Roy, Bradford County, Pennsywania. By A. T. Lilley, of Le Roy. 
(Read before the American Philosophical Society, December 7, 1883.) 
Feet. 
1. Cap of Chemung with Atrypas and many unrecog- 
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| nizable forms in light shale. (Spirorbis among 
LORY). i Hive pau. + ehee rues Peedi bah eatin hele ob 1 
2. Producteiia bed in gray sand............ swinhtededed WO 
8, Green shale... 2... eer otutaa hes che Bane COM NId, oso ertis 15 
A VGC RINE isiy devisyi- cis vceig vine min doce. petite fibeecciret Rey dake a 
| De CRRCOM BUUIO athe wo viele, eases HNN NES ORR) denieioue asa to ie? 0, 
6. Grammysia bed and gray shale ......+ ib Gayl Gua Givsinin | wO 
7. Iron ore, with Spirifer, Pterinea, Crinoids, Grammy- 
| sia, and fish remains. (Spirorbis among them)... 4 
Oe GCE RING Titi Vianteelar ee viligt ae b echenine a hate ii ile 20 
B.. REG. FUCOtd: DEO. sesso oie « Hebi h Was en ORT ed Wihioveeatigi: 
10. Green sandstone........... bbe ch cr REE OMEN Wie 20 
11. Red shale and sand with unrecognizable fossils..... 4 
12. Conglomerate with pebbles, lime, Spirifer, Produc- 
| POU CUCL Foe/e VOTMMINB YY ee yan ed ne seine wah ceee vet 6 
TF CABS CD SOUS yyiviya ial Gira FU NPA OWEN H bee se Niw vite bie 10 
14, 2 
15. 40 
16. 2 
i Lie 19 
Hee 1 
19, 52 
20 1 
Qh; Greer seas tomes ye iki Nile dls bind OAR edly qlee ie 14. 
I 99. Green sHalesies. sss. i's Bee Wek Wether vides e bie 40 
| 23. Brown sandstone, with Spirifer and Productella..... 1 
24. Gray sandstone, with Crinoids and plants........... 8 
| 25. Green shale.. 6 
i 26. Green sandstone and shale, with Crinoids and Spiri- 
| FONC 6 bs v's i ie Aker eek Rawle PiMlaWr a ay Bice ace Meee sa aude 8 
| Oh Gray Sandstone and shales. ive vd wise s ove dive cee owe 60 
| 28. Green sandstone, with shells and fish remains........  5é 
29. Red shale and sandstone,.......-.+000. eee ee 
30. Brown sandstone, with shells and fish remains....... 39 
SL, Green BAIS een sss oe AOU ND 6 bisa wl orure EP macta sing O 
32. Red sandstone, with don ore and shells ...... a coie hey 
| BG. Grey BALE. ie: ceieie'y vero ecewide ohh Mv ole re «oii Rivet che 
34, Calcareous tron ore and sandstone.....+.....6 ee 
SO) Brown SHAG: wiivtevivien eve es CU MULE VETER Woes 20 
86, Calcareous tron ore (red) and sandstone...... ew inyiey: uae 
