woodworth: geological expedition to brazil and chile. 47 



amarello com seizes que ahi conteim uma delgada camada de plantas fosseis. 



A secyao e' a sequinte: 



Arenito amarello com delgado leito de carvao . . . .50. metres. 



Argilla negra com abundantes restos de insectos . . . 0.60 

 Schisto cinzento com rica flora de Glossopteris .... 5.0 



Schisto cinzento um tanto ardoriano contendo Lingxda, 

 Discina, escamas de peixes, azas de insectos, Chonetes em abun- 



dancia, e outros brachiopodos ...... 40. 



Camada argillosa com seixos e boulders ate o rio das Almas . 60. 



.... Parece-me nao haver duvida de que o conglomerate e' Carbonif ero 

 medio ao Permiano. Os insectos apparecem nao so nas camadas marinhas 

 como as que se acham logo abaixo do carvao. 



Esta vista modificada podre figurar em sen relatorio. 

 AbragoSj o amigo admirador, 



Euzebio Paulo de Oliveira. 



(Translation by J. B. Woodworth). 



Ponta Grossa, IStli December, 1911. 

 My dear Mr. Woodworth, 



Greeting : 



I am here prosecuting my labors and as it may 



be that your observations on Brazil have not yet been published I avail myself of 

 this opportunity to give you some data upon the age of the glacial conglomerates. 



The first time that I foimd beds vrith marine fossils in the glacial conglomerates was 

 when I was executing the boring at Passinho 12 kms. south of Imbituvo These beds 

 were encountered on going below a depth of 120 meters: they were 45 meters thick 

 and in them we foimd a small Lingula, scales of fishes, and remains of undetermined 

 bracliiopods and lamellibranchs. Below 1(50 meters in depth the boring traversed 

 down to .395 meters exclusively shaly beds, without stratification, with pebbles and 

 some boulders of granite. In 1908, in your company, I discovered the fos.siliferous 

 bed on the Rio Negro. It is a black, combustible shale, with Lingula, Discina, fishes 

 and remains of sponges. In October of this year I found the eqmvalent of the beds 

 of the boring at Passinho. They appear in the ravine east of T. Soares, 45 meters 

 below the yellow sandstones, with pebbles, that here contain a thin bed of fossil 

 plants. The section is as follows : — 



Sandstone, yellow, with thin layer of coal, 50. meters 



Shale, black, with abundant remains of insects. 0.60 



Shale, ashy, with rich flora of Glossopteris. 5.00 



do do somewhat burnable, containing Lingula, Discina, scales of fishes, 



wings of insects, Chonetes in abundance, and other brachiopods. 40.00 



Argillaceous bed with pebbles and boulders do^-n to the river das Almas 60 . 00 

 .... It appears to me not to be doubted that the conglomerate is Carboniferous 

 intermediate to the Permian. The insects appear not only in the marine beds but In 

 those wliich occur immediately below the coal. 



This view modified may figure in yotu- report. 



Cordially yours, 



Euzebio Paulo de Oliveira. 



Dr. Derby, in 1888, in a letter to ^Yaagen, which was pubHshed by 

 that geologist (Derby, 1888) announced the occurrence in this series 

 of erratics and likened the deposits to those of the glacial beds of the 



