402 THK CUF,TA( EOUS AND TEIITIAUY GKOLOGY 



Pakt II. 



THE BRAZILIAN MESOZOIC BASINS OTHER THAN THAT OF SERGIPE-ALAGOAS. 



In order that the relations of the Sergipe-Alagoas basin to the mesozoic geology 

 of other portions of Brazil may be the better iinderstood, brief descriptions are here 

 given of all the other known mesozoic localities in Brazil. The locality in the bay of 

 Sao Francisco, Province of Santa Catherina is here described for the first time. 



SAO FRANCISCO DO SUL, PROVINCE OF STA. CATHERINA. 



Of the cretaceous rocks at this place but little is known at present, and that lit- 

 tle is due to a small collection of fossils made here in 1876, by Mr. Luther Wagoner, 

 then topogiapher on the Imperial Geological Survey of Brazil. As the specimens 

 brought away by Mr. Wagoner were collected incidentally, no observations were 

 made by him of the extent of the deposit, and no one seems to have given the matter 

 attention since that time. The writer visited the place in 1881, but as he was there 

 one night only, he was unable to gain any knowledge of it. The position of the out- 

 crop suggests that this rock may underlie the country about the bay of Sao Francisco. 

 It certainly does not appear in the surrounding hilly country. 



Lithologically it is a brown, earthy, calcareous sandstone resembling that found 

 at Olinda in the province of Pernambuco. It was observed only upon a small island 

 about six miles from the port and covered only about one acre. 



The outcrop, Mr. Wagoner tells me, is very inconspicuous, near the water's 

 edge,* and suggests the geology of Bahia and Maria Farinha, except that the expo- 

 sure is very limited. The specimens collected contained among others a number of 

 fossil gasteropods. It should be stated here that this reference of these beds to the 

 cretaceous is not based upon a detailed study of the fossils, but mainly upon the 

 striking general resemblance of the fossils to those found in the cretaceous beds fur- 

 ther north. It is to be regretted that this small collection of material was not sub- 

 mitted to Dr. White in connection with other mesozoic material collected by the Bra- 

 zilian Survey. Of the relation of the cretaceous at this place to the older rocks noth- 

 ing is known. 



* It was suggested at the time that these specimens might be fragments carried to the place as ballast, but Mr. 

 Wagoner was toiilidenl that this could not be the case, for the rocks do not occur in fragments, but in a solid bed. 



