RESUME OF GEOLOGY OF RIO GRANDE DO NORTE 97 



2. Marine fossils have lately been found in the beds near the base of 

 the series west of Goyaninha, and they probably occur also in the lime- 

 stones northwest of Sao Jose and south of Penha. 



3. The fossiliferous limestones near Goyaninha are quite sandy. 



4. Whether the upper beds exposed on the coast are the same as those 

 yielding fossils inland is not known certainly. 



5. The limestones south of Penha are, in part at least, dolomites, and 

 lithologically resemble some of the Cretaceous limestones of the Sergipe 

 basin. 



6. These Tertiary (?) beds contain much iron, especially on the coast 

 south of Natal, at and in the vicinity of Ponta da Pipa. 



7. The Tertiary (?) beds thin out on the interior side, and their margin 

 is a series of patches resting on the old crystalline series. 



8. The sedimentary beds rest unconformably on crystalline schists 

 and granites probably of Paleozoic age. These crystalline rocks cover 

 the greater part of the interior of the state of Rio Grande do Norte. 



9. The beds here spoken of as doubtful Tertiary may be Cretaceous 

 at the base and Tertiary at the top ; this is suggested by the geology of 

 the adjacent state of Parahyba do Norte, as shown in the first part of 

 this paper. 



10. Weathering has affected the sedimentary beds along the coast in 

 much the same way, whether those beds are of marine or freshwater 

 origin. 



11. Besides those mentioned at Goyahinna, one other occurrence of 

 fossils has been reported in Rio Grande do Norte. In 1853 or 1854 

 Jacques Brunet, a French physician, while exploring the interior of 

 Parahyba and Rio Grande do Norte, found fossil shells at Apody, on 

 Rio Mossoro, in the northern part of the province.* Dr Burlamaque 

 also reports limestone and chalk f sent from the same place by Brunet. 

 The Apody beds are probably the Cretaceous (or Tertiary) limestone.^ 



*Noticia aeerca dos animaes de racas extinctas descobertos em varios pontos do Brazil. Pelo 

 Dr F. L. C Burlamaque. Bibliotheca Guanabarense, Trabalhos da Soc. Vellosiana. 9 de Junho 

 de 1885. Seccao de Geologia, p. 19. 



fNoticia aeerca de alguns mineraes e rochas de varias provincias do Brazil, recebidos no Museu 

 Naeional durante o anno de 1855. Por Dr F. L. C Burlamaque. Revista Brazileira, Rio de Janeiro, 

 1858 (?), vol. ii, pp. 78-79. 



| Rocks containing Cretaceous fossils were reported to have been found by Dr Continlio on Rio 

 Mossoro in 1886. Contribuicoes a Paleontologia do Brazil por Charles A. White. Archivos do 

 Museu Naeional do Rio de Janeiro, 1887, vol. vii, p. 10. 



XIV— Bum-. Geoi,. Soc. Am., Vol. 13, 1901 



