SOMK LOCAL hKTAILS. |}^.- 



l»<'(ls ]»res(Mit the ('X('t'[)ti(.iiiil t'cutiiiv of icstiiin- on n sofi 

 Jiiid (l('(M.iiiiH).sc(l slialu (I'ticii shiilc). This rock ini,L,r|it 

 indeed he iiiistukt'ii I'or diil't hut for its stratification, 

 and it must have hccii decoiiiijosi'd t,(» a i^rcat di'pLh hy 

 •siib-fierial action and .suhseciuently siihiiicr^vd and covei'ed 

 hy th(! I'leistoceiie Iicds. Its prcserviition is thi; more 

 rcniarkal)le that the clay ovcrlyiiiL^ it contains very hirifc; 

 Laureiitian houhh-rs, which must haA(^ Ix'cn ((uietly (h;- 

 ])osited hy Hoatino- ice. Only a few shells of Tr//I,i(t 

 (/nr/i/ti/K/Int were observed in these clays. 



The reinarkal)le series of terraces seen at this ]»lacc, 

 find noticed in chapter second, risin^' to 900 feet in hei,«,dit, 

 are all cut out of th(^ IMeistoeeno beds Kind decomposed 

 shale, and even the highest presents lai«,'e boulders. In 

 e.\aminin<r such terraces it is always necessary to distin- 

 <iuish between the clays out of which the terraces have 

 been cut and the more modern deposits restinj^- on the 

 terraces. Uoth may contain fossils, but those of the 

 original clay are in this region mostly of deeper water 

 species than those in the overlying superficial beds. 



lattrilaite the preservation of the thick beds of boulder- 

 clay and the decomposed shale at Les Ebouleinents, to the 

 fact that no transverse valley exists here, and that a point 

 of high Lanrentian land projects to the north-east, so as 

 to shelter this place from forces acting in that direction. 

 T have observed this appearance on the lee or south-west 

 side of other ])rojecting masses of hard rock, and as the 

 decomposed shale must be a numument remaining from 

 the riiocene elevation of the land, it shows that no 

 l)owerful eroding force had acted between that time and 

 the period of the N.E. arctic ice-laden currents. 



It is perhaps deserving of notice that the thick beds of 

 soft material at Les Eboulenients have been cut into 



