ae 
The detailed structure of the Rio Bonito Beds as measured along 
the Estrada Nova near Minas, Santa Catharina, is as follows in des- 
cending order: 
Meters 
1. Gray sandstone and sandy beds. . . . . . . .) 6.096 
(Gone ee Saeyish: 6 Potae 
2. Coal, Treviso bed. , . . \Clay.. . . . 0.254 
Nowa, Bs Rake 0.254) 
3. Concealed and sandstone, Upper Barro Branco. . . 6.62 
pom slaty. .  . 0.25 | 
4. Coal, Barro Branco . . .{Clay, white. . 0.555! 
Coal, slaty. . . 0.305 
5. Shales with fossil plants, Glossopteris, Gangamopteris, 
Noeggerathiopsis, Cardiocarpon Go hae Meco ele 
6. Sandstone, massive, white, Lower Barro Branco. . 9.14 
7. Slaty cool (Irapua), fossil plant fragments... . . . 0.15 
0.660 
8. Soft creamy brown shales with thin layers of sand- 
SEONG: 6 ous wy) He a ee we we ee oe 
9. Sandstone, grayish white. . . . . . . .. =. 6.10 
TO}, SHAIOS ge. oy ws tee a BE al a aE SE i ee B05 
ll. Sandstone. . 2. 2. 2. ww, ew we ee we BO. 
12, Brown shales, quite fossiliferous in lower portion, Glos- 
sopleris, Sphenopteris, Noeggerathiopsis, Sigillaria, Equt- 
setites, Cardivcarpon, ete. . . . . . . « « « 6.10 
13. Sandstone, gray. 2. . 2 2. 1 ee ee ee) 805 
14. Coal, Ponte Alta. . 2. 2. 2... ew ew ee ee) O15 
15. Shales. 2. 6 2. 2 6 ee te we ew ew et hw ew ew) «2,18 
16. Sandstone, massive, Upper Bonito. . . . . . « 12.20 
17. Coal, Bonito Rider. . . 1. 1. © © © ee oe he) «(0.455 
18. Clay and coaly shale. . . . . «. . «© «© ©) 0.555 
19. Bonito coal bed (coal and slate), . . . . . . . 2.13 
20. Fire clay and light-colored shales. . . . . . . 4.57 
21. Sandstone, massive, pebbly, Lower Bonito. . . . 10.67 
22. Shales, often weathering reddish, and concealed. . . 22.86 
23. Sandstone, massive, pebbly. . . . . . « « « 15.24 
24. Shales weathering reddish and yellow above, but light 
gray at base. 2. 6. 6 1 6 6 1 ww tw ww) 726R 
25. Light gray sandy micaceous shale, very full of Glosso- 
pteris, Gangamopteris, Noeggerathtopsis, Phyllotheca, 
Derbyella, Hastimima, Rosellinites, Hysterites, Arberia, 
Cardiocarpon, etc., together with many others, a full 
list of which is given in another part of this report. 0.305 
