48 J. C. BRANNER GEOLOGY OF NORTHEAST COAST OP BRAZIL 



that the Maria Farinha beds are Tertiary and not Cretaceous, as was 

 supposed by Hartt, Rathbun, and -White * Mr Arnold bears me out in 

 this conclusion, and he is positive that the beds at Ponta de Pedras are 

 to be correlated with those of Maria Farinha, which Professor Gilbert D. 

 Harris regards as of Midway Eocene age beyond any question. 



About halfway between Ponta de Pedras and Parahyba similar rocks 

 are exposed on both sides of the mouth of a river that enters the sea 

 just north of Tambaba point. The rocks were examined on the beach 



Figure 3. — Reef of Tertiary Sandstone, South of Jacuma. 



about 2 kilometers south of the village of Praia de Jacuma, which is in 

 south latitude 7 degrees 17 minutes. Here a reef of the yellow fossilifers 

 ous Tertiary calcareous sandstones like that of Ponta de Pedras extend- 

 out about 300 meters from the beach and rises a meter or more above 

 mean tidelevel. The surface of this rock is black, and its yellow color 

 only appears on a freshly broken face. 



This Jacuma locality is just 22 kilometers on a line from the city of 

 Parahyba, and is the nearest to Parahyba of any Tertiary localit}^ that 

 has been identified as such by its fossils. 



The exposures between Jacuma and Cabo Branco were not examined. 



*J. C. Branner: The oil-bearing shales of the coast of Brazil. Trans. Amer. Inst. Mining En- 

 gineers, 1900, pp. 17, 18 of the separate. The Tertiary age of the Maria Farinha beds was suspected 

 at the time of the publication of Dr White's contributions. See Cretaceous and Tertiary, etcetera, 

 by J. C Branner, Trans. Amer. Phil. Soc, 1889, vol. xvi, p. 405. 



