3. Clay, light colored. . 2. 2. 1. 1. 1. ew 1 uw ew te ee 0.48 
4. Coaly layer . . Sontts Be real thls Aly “er vias Gru ver te? ba wap bod! <8 0.03 
By, Shales ark ego ah a SS Gg GL Ge a ge Gwe Gia S 0.30 
Coal,slaty. . . 2. 1. wee — 
6. Coal Bonito - . ,)Clay,lightgray . ..... 0.04» 2.18 
beaut, d5by ss ae ee cw OB 
7. Concealed to Rio Bonito. . . . 2... 1 ee ee ee 18,28 
Tres Saltos,a locality named by Dr. Ramiro Barcellos, is about 
one kilometer and a third due north from Bonito IV. There a small 
stream tributary to RioPassa Dois makes three beautiful cascades in 
passing over the outcrops of both the Upper and Lower Bonito 
sandstones, affording a fine natural exposure of the Bonito coal bed in 
the following section : 
Meters 
1. Sandstone, massive, Upper Bonito, visible . . . . .. .. 9.14 
COL ee aie OE Bee Bm pao 
2. Coal, Bonito Rider . .,Shale. . . . . . . 2. es 0.13 0.38 
Loaat- Bru tee Mea Gl: Hele ties “aye 3g 0.05 | 
3. Clay and shale. . 2. 1. 1 6 6 ee ew ew ew et we ew 0.66 
Coal, slaty, hard. . . . « 0.51 
i, oat Bonito a 8 Coal, in layers 5 to 15c. m. thick 2.47 
separated by block slates 3 to 15 
em.thick .«. . 2. . 2. se. eae) 
4 Clay, and sandy shales . . . . sgltel cehade, Gece ay isk 4s 3.65 
. Sandstone, Lower Bonito gray, raaseis to. bed of stream. . . . . 7.62 
Elevation of Bonito coal, 252.5 meters. 
About one kilometer and a third nearly due north from Tres 
Saltos is the outcrop of the Bonito coal bed on the Estrada Nova two 
kilometers and a qaurter from Minas station where it exhibits the 
following structure as it passes under the highway : 
Meters 
1. Sandstone, Upper Bonito, visible . . . 2. 2. «© «© - 2 ew ee 6.10 
COR 148 eae: Bh nage ee a Cans pasa 
2. Coal, Bonito Rider . SHAG cose ao Sap es Sse 0.13 0.46 
arch Be seas Sepik: Cie is ab Cs 0.05 | 
3. Clay and shales, light gray. . . 2. «© 1. 6 2 e 8 ws ew ew 0.66 
aes slaty, partings of gray shale ve 
4. Coal, Bonito. . . Coal, slaty, some gray shale par- 2.69 
zi tingsnear base. . . . . 2.13) 
5. Clay and sandy shales, soft. . 2. 2. 1 2 6 2 ee eee 3.65 
6. Sandstone, gray, pebbly, massive, visible, Lower Bonito. . . . . 9.14 
