ae, Gene 
ee Slaty ee cl Bem Roe ee 
3. Coal, Ponta Alta. . ./Shalee . 2... . . 1 0.05 0.76 
Coal, fair 2. 2. 2. 2. ww, 0.41) 
4. Clay and shales. . 2... . . . ww ee ee ee 1.22 
5. Sandstone, massive visible. . . . . . 1. ee ee eg 7.62 
Elevation of coal, 204 meters. 
The analysis of the coal from this locality is given on another 
page of this report. 
Dr. Luiz Felippe Gonzaga de Campos reports that a boring was 
once made near Ponte Alta, which encountered the following succes- 
sion, according to a verbal statement made to him: 
Meters 
Surfacesoil; ete. gg owe We) ee aS A eA a a es 7.00 
Sandstone. © 2 6 6 4 8 8 8 ee eee ew ee 6.00 
Coal, Ponte Alta. . 2. @ «© «© & % © e 8 © © 6 8 we ee 0.22 
Sandstone. 2.0. 2 2 4 6 2 6 * @ & 6 «© © & & » w 3 » 28,00 
Coad. ae et tak BM ops de ee an a Ree ae MCAD 
Gate LL LLL osm Bmlon s+ 
Slate, bituminous . . . . ... . eh COWd:«~0 
QUICKSANM Sh URS sap) lel ce ie oa RR eRe Ma ay Yee ee pe Niet ee. Se 2.00 
Sandstone. soft . . 2. 2. 6 1 1 we ew ew ww ww ww le we) 4100 
Coal . . we) tale Salta, Ge! Get el tS “EK Se ie Se GR a 0,17 
Sandstone, hard. . . . . . 6 © © ew ew ew we ew ew ee ~~) «6080 
TOGA. es» Geeiciey) HED. Gelcted, Whee Ge uh: ews ca oe SOND 
The coal at 13 meters is most probably the Ponte Alta seam, 
while that at 41.22 to 47.07 may he the representative of the 
Bonito bed. 
It is possibly this same bed which crops on the south bluff of 
Rio Oratorio, 2 kilometers below the mouth of Rio do Rasto and 
15 kilometers north-east from Minas. Its crop is there partially 
exposed, and appears to be about 60 centimeters thick with a thin 
gray shale near the center. It has been exploited to only a small 
extent. 
Fossiliferous plant shale 
Fossil plants occur_in the dark shales which overlie the Ponte Alta 
coal bed by a few meters along the Estrada Nova, near Minas, at an 
altitude of 300.36 meters above sea level, as determined by Dr. Seixas. 
