J 843.] 



273 



SEC'/iON I. 



Tatmaoouche to Xitiifl-o, 24 rnile». 



New Annan Hill* 



Pkwu Trough. 



c a 6 <2 



c/. Horizontal red Bandetone 



c. lied and grey waridstones and shale, with concretionary limestone, con- 

 taining copper ore, liyniU:, lirulor/enUcH, and f(jotrfMrkii of lArilii ; dip near the hilk, 

 30^ ; at Tatrnagouclie only 10'-'. 



h. iSanddtone and coal — coal-plantn. 



a. Limestone, dar)< skte, shale, and grits, with shells and encrinites — In- 

 truding bands of granite, syenite, amygdaloid, inc. 



Fundy. To the eastward it does not reach the coast of Nor- 

 thumberland Strait, though its underground continuation in that 

 direction in indicated by an Anticlinal line wliich traverses the 

 newer rnembers of the coal formation that lap round the eastern 

 extremity of the Annan Hills. 



These trough-slxaped arrangements of the strata are subject to 

 many irregularities. The hilly region of Mount Thorn is placed 

 nearly transverse to the Pictou trough. In consequence of the 

 separating ridges and anticlinal lines having been elevated, either 

 during the carboniferous period, or at a still later epoch, the car- 

 bonifex'ous strata are traversed by numerous faults and minor lines 

 of disturbance, the prevailing direction of which is from east to 

 west. In spite of these disturbances, however, the strata in the 

 troughs have a general synclinal arrangement Avhich can be traced 

 in the hilly regions, such as that of Mount Thorn. This will be 

 seen by examining the accompanying map. 



East River. 



Section II. The gypsiferous formation ap- 



Valiey of the eastern branch of East pears in several places on the SOUth 



K-ivEE. jjjdfj f,f the Pictou coal trough. In 



N. i'kt«u Trough. H.n'^t'cing its appearance at these 



points, I may begin by stating some 

 facts respecting the sec-tion on the 

 East River of Pict^ju in addition 

 to those already described by Mr. 



„ , , Lyell. The members of the gyp- 



c. Hard sandstone. .i. ,. .. • ,i r^'' ^ 



h. Gypsiferous formation, with beds S'^f^rous formation seen m tliat sec- 



of limestone and gypsum alternating, tion COnsiSt of hard, brownish-red 



and drifts overlying. shales and sandstones ic), with beds 



a. Silurian slate. of m'drinft limestone and masses of 



gypsumC^j. These latter are seen in the valley of the river between 



the sandstfjnes and the Silurian strata («) ; but there are no good 



