STRATIGRAPHIC GEOLOGY 221 



found near Santa Maria da Bocca do Monte, in the State of Eio Grande 

 do Sul, and at Sao Jose do Rio Preto, in Sao Panlo. (See Smith Wood- 

 ward and E. Von Ihering.) 



CRETACEOUS 



General observations. — Fossiliferons Cretaceous beds are found in a 

 narrow belt along the coast of Parahyba,^ Pernambuco, Sergipe, and 

 Bahia. In the States of Sao Paulo, Parana, Santa Catharina, Rio Grande 

 do -Sul, and in southern Matto Grosso Lower Cretaceous beds (named 

 Baurii by Gonzaga de Campos) cap the hills and cover large areas. The 

 only fossils found in the Baurii beds suggest that they correspond to the 

 Wealden of Europe. (See Pacheco.) In the Serra do Araripe, along 

 the southern frontier of Ceara, Cretaceous beds contain well preserved 

 fossil fishes. The rocks in the Serra do Araripe are nearly horizontal 

 sandstones and limestones that extend into the adjacent States. (See 

 Jordan and Branner.) 



The areas in Matto Grosso colored as Cretaceous on the map — the 

 Parecis sandstones — are not yet certainly known to be such, for no Cre- 

 taceous fossils have been found in them. The views of Euzebio de Paulo 

 Oliveira are followed.** 



The following authors have written on the Cretaceous of Brazil : 



Agassiz 



Hyatt 



Oliveira, E. (Matto Grosso) 



Alport 



Jordan 



Rathbun 



Branner 



Loriol 



White, C. A. 



Cabrillac 



Marsh 



Williston 



Cope 



Mawson 



Woodward 



DouYille 



Morris 





Economic geology of the Cretaceous. — In the State of Sergipe Creta- 

 ceous Limestones are abundant and are available both for building stones 

 and for the manufacture of lime and of Portland cement. 



In the Chapada do Araripe the Cretaceous contains important beds of 

 limestone. Limestones of local importance also occur in the Cretaceous 

 of Pernambuco and Parahyba. 



TERTIARY 



General observations. — Beds of Tertiary age occur in Acre, where they 

 are fresh-water or land deposits. In Amazonas fossils show some of the 

 Tertiary beds to be brackish water deposits. In Para, Maranhao, and 

 Rio Grande do 'Norte fossils show the Tertiary deposits to be of marine 



^ Reconhecimento geologico do noroeste de Matto Grosso por Euzebio Paulo de Oliveira, 

 pp. 31, 69. Rio de Janeiro, 1915. 



XVI — Bull. Geol. Soc. Am., Vol. 30, 1918 



